Splunk Enterprise version 7.3 is no longer supported as of October 22, 2021. See the Splunk Software Support Policy for details. For information about upgrading to a supported version, see How to upgrade Splunk Enterprise.
This documentation does not apply to the most recent version of Splunk® Enterprise.
For documentation on the most recent version, go to the latest release.
indexes.conf
The following are the spec and example files for indexes.conf.
indexes.conf.spec
Version 7.3.2 This file contains all possible options for an indexes.conf file. Use this file to configure Splunk's indexes and their properties. There is an indexes.conf in $SPLUNK_HOME/etc/system/default/. To set custom configurations, place an indexes.conf in $SPLUNK_HOME/etc/system/local/. For examples, see indexes.conf.example. You must restart Splunk to enable configurations. To learn more about configuration files (including precedence) please see the documentation located at http://docs.splunk.com/Documentation/Splunk/latest/Admin/Aboutconfigurationfiles CAUTION: You can drastically affect your Splunk installation by changing these settings. Consult technical support (http://www.splunk.com/page/submit_issue) if you are not sure how to configure this file.
GLOBAL SETTINGS
Use the [default] stanza to define any global settings.
* You can also define global settings outside of any stanza, at the top
of the file.
* Each conf file should have at most one default stanza. If there are
multiple default stanzas, settings are combined. In the case of
multiple definitions of the same setting, the last definition in the
file wins.
* If a setting is defined at both the global level and in a specific
stanza, the value in the specific stanza takes precedence.
sync = <nonnegative integer>
* The index processor syncs events every 'sync' number of events.
* Set to 0 to disable.
* Highest legal value is 32767.
* Default: 0
defaultDatabase = <index name>
* If an index is not specified during search, Splunk software
searches the default index.
* The specified index displays as the default in Splunk Manager settings.
* Default: main
bucketMerging = <boolean>
* Currently not supported. This setting is related to a feature that is
still under development.
* Set to true to enable bucket merging service on all indexes
* You can override this value on a per-index basis.
* Default: false
bucketMerge.minMergeSizeMB = <unsigned integer>
* Currently not supported. This setting is related to a feature that is
still under development.
* Minimum cumulative bucket sizes to merge.
* You can override this value on a per-index basis.
* Default: 750
bucketMerge.maxMergeSizeMB = <unsigned integer>
* Currently not supported. This setting is related to a feature that is
still under development.
* Maximum cumulative bucket sizes to merge.
* You can override this value on a per-index basis.
* Default: 1000
bucketMerge.maxMergeTimeGapSecs = <unsigned integer>
* Currently not supported. This setting is related to a feature that is
still under development.
* Maximum allowed time gap, in seconds, between buckets about to be merged.
* You can override this value on a per-index basis.
* Default: 7776000 (90 days).
queryLanguageDefinition = <path to file>
* DO NOT EDIT THIS SETTING. SERIOUSLY.
* The path to the search language definition file.
* Default: $SPLUNK_HOME/etc/searchLanguage.xml.
lastChanceIndex = <index name>
* An index that receives events that are otherwise not associated
with a valid index.
* If you do not specify a valid index with this setting, such events are
dropped entirely.
* Routes the following kinds of events to the specified index:
* events with a non-existent index specified at an input layer, like an
invalid "index" setting in inputs.conf
* events with a non-existent index computed at index-time, like an invalid
_MetaData:Index value set from a "FORMAT" setting in transforms.conf
* You must set 'lastChanceIndex' to an existing, enabled index.
Splunk software cannot start otherwise.
* If set to "default", then the default index specified by the
'defaultDatabase' setting is used as a last chance index.
* Default: empty string
malformedEventIndex = <index name>
* An index to receive malformed events.
* If you do not specify a valid index with this setting, or Splunk software
cannot use the index specified in the 'defaultDatabase' setting,
such events are dropped entirely.
* Routes the following kinds of events to the specified index:
* events destined for read-only indexes
* log events destined for datatype=metric indexes
* log events with invalid raw data values, like all-whitespace raw
* metric events destined for datatype=event indexes
* metric events with invalid metric values, like non-numeric values
* metric events lacking required attributes, like metric name
* Malformed events may be modified in order to make them suitable for
indexing, as well as to aid in debugging.
* A high volume of malformed events can affect search performance against
the specified index; for example, malformed metric events can lead to an
excessive number of Strings.data entries
* <index name> must refer to an existing, enabled index. Splunk software
does not start if this is not the case.
* If set to "default", the indexer places malformed events in the index
specified by the 'defaultDatabase' setting
* Default: empty string
memPoolMB = <positive integer>|auto
* Determines how much memory is given to the indexer memory pool. This
restricts the number of outstanding events in the indexer at any given
time.
* Must be greater than 0; maximum value is 1048576 (which corresponds to 1 TB)
* Setting this too high can cause splunkd memory usage to increase
significantly.
* Setting this too low can degrade splunkd indexing performance.
* Setting this to "auto" or an invalid value causes splunkd to autotune
the value as follows:
* System Memory Available less than ... | 'memPoolMB'
1 GB | 64 MB
2 GB | 128 MB
8 GB | 128 MB
8 GB or higher | 512 MB
* Only set this value if you are an expert user or have been advised to by
Splunk Support.
* CAUTION: CARELESSNESS IN SETTING THIS CAN LEAD TO PERMANENT BRAIN DAMAGE OR
LOSS OF JOB.
* Default: auto
indexThreads = <nonnegative integer>|auto
* Determines the number of threads to use for indexing.
* Must be at least 1 and no more than 16.
* This value should not be set higher than the number of processor cores in
the machine.
* If splunkd is also doing parsing and aggregation, the number should be set
lower than the total number of processors minus two.
* Setting this to "auto" or an invalid value will cause Splunk to autotune
this setting.
* Only set this value if you are an expert user or have been advised to by
Splunk Support.
* CAUTION: CARELESSNESS IN SETTING THIS CAN LEAD TO PERMANENT BRAIN DAMAGE OR
LOSS OF JOB.
* Default: auto
rtRouterThreads = 0|1
* Set to "1" if you expect to use non-indexed real time searches regularly. Index
throughput drops rapidly if there are a handful of these running concurrently
on the system.
* If you are not sure what "indexed vs non-indexed" real time searches are, see
README of indexed_realtime* settings in limits.conf
* NOTE: This is not a boolean value. Acceptable values are "0" and "1" ONLY.
At the present time, you can only create a single real-time thread per
pipeline set.
rtRouterQueueSize = <positive integer>
* This setting is only valid if 'rtRouterThreads' != 0
* This queue sits between the indexer pipeline set thread (producer) and the
'rtRouterThread'
* Changing the size of this queue can impact real-time search performance.
* Default: 10000
selfStorageThreads = <positive integer>
* Specifies the number of threads used to transfer data to customer-owned remote
storage.
* The threads are created on demand when any index is configured with
self storage options.
* Default: 2
assureUTF8 = <boolean>
* Verifies that all data retrieved from the index is proper by validating
all the byte strings.
* This does not ensure all data will be emitted, but can be a workaround
if an index is corrupted in such a way that the text inside it is no
longer valid utf8.
* Will degrade indexing performance when enabled (set to true).
* Can only be set globally, by specifying in the [default] stanza.
* Default: false
enableRealtimeSearch = <boolean>
* Enables real-time searches.
* Default: true
suppressBannerList = <comma-separated list of strings>
* suppresses index missing warning banner messages for specified indexes
* Default: empty string
maxRunningProcessGroups = <positive integer>
* splunkd runs helper child processes like "splunk-optimize",
"recover-metadata", etc. This setting limits how many child processes
can run at any given time.
* This maximum applies to all of splunkd, not per index. If you have N
indexes, there will be at most 'maxRunningProcessGroups' child processes,
not N * 'maxRunningProcessGroups' processes.
* Must maintain maxRunningProcessGroupsLowPriority < maxRunningProcessGroups
* This is an advanced setting; do NOT set unless instructed by Splunk
Support.
* Highest legal value is 4294967295.
* Default: 8
maxRunningProcessGroupsLowPriority = <positive integer>
* Of the 'maxRunningProcessGroups' helper child processes, at most
'maxRunningProcessGroupsLowPriority' may be low-priority
(for example, "fsck") ones.
* This maximum applies to all of splunkd, not per index. If you have N
indexes, there will be at most 'maxRunningProcessGroupsLowPriority'
low-priority child processes, not N * 'maxRunningProcessGroupsLowPriority'
processes.
* There must always be fewer 'maxRunningProcessGroupsLowPriority' child
processes than there are 'maxRunningProcessGroups' child processes.
* This is an advanced setting; do NOT set unless instructed by Splunk
Support.
* Highest legal value is 4294967295.
* Default: 1
bucketRebuildMemoryHint = <positive integer>[KB|MB|GB]|auto
* A suggestion for the bucket rebuild process for the size, in bytes,
of the tsidx file it will try to build.
* Larger files use more memory in a rebuild, but rebuilds fail if there is
not enough memory.
* Smaller files make the rebuild take longer during the final optimize step.
* NOTE: This value is not a hard limit on either rebuild memory usage or
tsidx size.
* This is an advanced setting, do NOT set this unless instructed by Splunk
Support.
* If set to "auto", the bucket rebuild process tunes the setting based on
the amount of physical RAM on the machine:
* less than 2GB RAM = 67108864 (64MB) tsidx
* 2GB to 8GB RAM = 134217728 (128MB) tsidx
* more than 8GB RAM = 268435456 (256MB) tsidx
* If not set to "auto", then you must set this setting between 16MB and 1GB.
* A value may be specified using a size suffix: "16777216" or "16MB" are
equivalent.
* Inappropriate use of this setting causes splunkd to not start if
rebuild is required.
* Highest legal value (in bytes) is 4294967295.
* Default: auto
inPlaceUpdates = <boolean>
* Whether or not splunkd writes metadata updates to .data files in place.
* Intended for advanced debugging of metadata issues.
* If set to "true", metadata updates are written to the .data files directly.
* If set to "false", metadata updates are written to a temporary file and
then moved into place.
* Configuring this setting to "false" (to use a temporary file) affects
indexing performance, particularly with large numbers of hosts, sources,
or sourcetypes (~1 million, across all indexes.)
* This is an advanced setting; do NOT set unless instructed by Splunk
Support
* Default: true
serviceInactiveIndexesPeriod = <positive integer>
* How frequently, in seconds, inactive indexes are serviced.
* An inactive index is an index that has not been written to for a period
greater than the value of 'serviceMetaPeriod'. The inactive state is not
affected by whether the index is being read from.
* The highest legal value is 4294967295.
* Default: 60
serviceOnlyAsNeeded = <boolean>
* DEPRECATED; use 'serviceInactiveIndexesPeriod' instead.
* Causes index service (housekeeping tasks) overhead to be incurred only
after index activity.
* Indexer module problems may be easier to diagnose when this optimization
is disabled (set to false).
* Default: true
serviceSubtaskTimingPeriod = <positive integer>
* Subtasks of indexer service task will be timed on every Nth execution,
where N = value of this setting, in seconds.
* Smaller values give greater accuracy; larger values lessen timer
overhead.
* Timer measurements are found in metrics.log, marked
"group=subtask_seconds, task=indexer_service"
* Highest legal value is 4294967295
* Configure a value for this setting that divides evenly into the value for
the 'rotatePeriodInSecs' setting where possible.
* Default: 30
processTrackerServiceInterval = <nonnegative integer>
* How often, in seconds, the indexer checks the status of the child OS
processes it has launched to see if it can launch new processes for queued
requests.
* If set to 0, the indexer checks child process status every second.
* Highest legal value is 4294967295.
* Default: 15
maxBucketSizeCacheEntries = <nonnegative integer>
* This value is no longer needed. Its value is ignored.
tsidxStatsHomePath = <string>
* An absolute path that specifies where the indexer creates namespace data
with the 'tscollect' command.
* If the directory does not exist, the indexer attempts to create it.
* Optional.
* NOTE: The "$SPLUNK_DB" directory must be writable.
* Default: $SPLUNK_DB/tsidxstats
hotBucketTimeRefreshInterval = <positive integer>
* How often each index refreshes the available hot bucket times
used by the 'indexes' REST endpoint.
* A refresh occurs every N times service is performed for each index.
* For busy indexes, this is a multiple of seconds.
* For idle indexes, this is a multiple of the second-long-periods in
which data is received.
* This setting is only intended to relax the frequency of these refreshes in
the unexpected case that it adversely affects performance in unusual
production scenarios.
* This time is tracked on a per-index basis, and thus can be adjusted
on a per-index basis if needed.
* If you want the index information to be refreshed with
every service (and accept minor performance overhead), set to 1.
* Default: 10 (services).
PER INDEX OPTIONS
These options may be set under an [<index>] entry.
Index names must consist of only numbers, lowercase letters, underscores,
and hyphens. They cannot begin with an underscore or hyphen, or contain
the word "kvstore".
**************************************************************************
disabled = <boolean>
* Toggles your index entry off and on.
* Set to "true" to disable an index.
* Default: false
deleted = true
* If present, means that this index has been marked for deletion: if splunkd
is running, deletion is in progress; if splunkd is stopped, deletion
re-commences on startup.
* Do NOT manually set, clear, or modify the value of this setting.
* CAUTION: Seriously: LEAVE THIS SETTING ALONE.
* No default.
homePath = <string>
* An absolute path that contains the hot and warm buckets for the index.
* Best practice is to specify the path with the following syntax:
homePath = $SPLUNK_DB/$_index_name/db
At runtime, splunkd expands "$_index_name" to the name of the index. For example,
if the index name is "newindex", homePath becomes
"$SPLUNK_DB/newindex/db".
* Splunkd keeps a file handle open for warmdbs at all times.
* May contain a volume reference (see volume section below) in place of $SPLUNK_DB.
* CAUTION: The parent path "$SPLUNK_DB/$_index_name/" must be writable.
* Required. Splunkd does not start if an index lacks a valid 'homePath'.
* You must restart splunkd after changing this setting for the changes to take effect.
* Avoid the use of other environment variables in index paths, aside from the possible
exception of SPLUNK_DB.
* As an exception, SPLUNK_DB is explicitly managed by the software,
so most possible downsides here do not exist.
* Environment variables can be different from launch to launch of the
software, causing severe problems with management of indexed data,
including:
* Data in the prior location is not searchable.
* The indexer might not be able to write to the new location, causing outages
or data loss.
* Writing to a new, unexpected location could lead to disk space exhaustion
causing additional operational problems.
* Recovery from such a scenario requires manual intevention and bucket
renaming, especially difficult in an index cluster environment.
* In all circumstances, Splunk Diag, the diagnostic tool that Splunk Support
uses, has no way to determine the correct values for the environment
variables, and cannot reliably operate. You might need to manually acquire
information about your index buckets in troubleshooting scenarios.
* Volumes provide a more appropriate way to control the
storage location for indexes.
* No default.
coldPath = <string>
* An absolute path that contains the colddbs for the index.
* Beat practice is to specify the path with the following syntax:
coldPath = $SPLUNK_DB/$_index_name/colddb
At runtime, splunkd expands "$_index_name" to the name of the index. For example,
if the index name is "newindex", 'coldPath'
becomes "$SPLUNK_DB/newindex/colddb".
* Cold databases are opened as needed when searching.
* May contain a volume reference (see volume section below) in place of $SPLUNK_DB.
* Path must be writable.
* Required. Splunkd does not start if an index lacks a valid 'coldPath'.
* You must restart splunkd after changing this setting for the changes to
take effect. Reloading the index configuration does not suffice.
* Avoid using environment variables in index paths, aside from the
possible exception of $SPLUNK_DB. See 'homePath' for additional
information as to why.
* Remote-storage-enabled indexes do not cycle buckets from homePath to coldPath.
However, if buckets already reside in 'coldPath' for a
non-remote-storage-enabled index, and that index is later enabled for remote
storage, those buckets will be searchable and will have their life cycle
managed.
thawedPath = <string>
* An absolute path that contains the thawed (resurrected) databases for the
index.
* May NOT contain a volume reference.
* Path must be writable.
* Required. Splunkd does not start if an index lacks a valid thawedPath.
* You must restart splunkd after changing this setting for the changes to
take effect. Reloading the index configuration does not suffice.
* Avoid the use of environment variables in index paths, aside from the
exception of SPLUNK_DB. See 'homePath' for additional information as
to why.
bloomHomePath = <string>
* The location where the bloomfilter files for the index are stored.
* If specified, 'bloomHomePath' must be defined in terms of a volume definition
(see volume section below).
* If 'bloomHomePath' is not specified, the indexer stores bloomfilter files
for the index inline, inside index bucket directories.
* Path must be writable.
* You must restart splunkd after changing this setting for the
changes to take effect. Reloading the index configuration does
not suffice.
* Avoid the use of environment variables in index paths, aside from the
exception of SPLUNK_DB. See 'homePath' for additional information
as to why.
* CAUTION: Do not set this setting on indexes that have been
configured to use remote storage with the "remotePath" setting.
createBloomfilter = <boolean>
* Whether or not to create bloomfilter files for the index.
* If set to "true", the indexer creates bloomfilter files.
* If set to "false", the indexer does not create bloomfilter files.
* You must set to "true" for remote storage enabled indexes.
* CAUTION: Do not set this setting to "false" on indexes that have been
configured to use remote storage with the "remotePath" setting.
* Default: true
summaryHomePath = <string>
* An absolute path where transparent summarization results for data in this
index should be stored.
* This value must be different for each index and may be on any disk drive.
* Best practice is to specify the path with the following syntax:
summaryHomePath = $SPLUNK_DB/$_index_name/summary
At runtime, splunkd expands "$_index_name" to the name of the index.
For example, if the index name is "newindex", summaryHomePath becomes
"$SPLUNK_DB/newindex/summary".
* May contain a volume reference (see volume section below) in place of $SPLUNK_DB.
* Volume reference must be used if you want to retain data based on data size.
* Path must be writable.
* If not specified, splunkd creates a directory 'summary' in the same
location as 'homePath'.
* For example, if 'homePath' is "/opt/splunk/var/lib/splunk/index1/db",
then 'summaryHomePath' must be "/opt/splunk/var/lib/splunk/index1/summary".
* The parent path must be writable.
* You must not set this setting for remote storage enabled indexes.
* You must restart splunkd after changing this setting for the
changes to take effect. Reloading the index configuration does
not suffice.
* Avoid the use of environment variables in index paths, aside from the
exception of SPLUNK_DB. See 'homePath' for additional
information as to why.
* Default: not set
tstatsHomePath = <string>
* Location where data model acceleration TSIDX data for this index should be stored.
* Required.
* MUST be defined in terms of a volume definition (see volume section below)
* Path must be writable.
* You must not set this setting for remote storage enabled indexes.
* You must restart splunkd after changing this setting for the
changes to take effect. Reloading the index configuration does
not suffice.
* Default: volume:_splunk_summaries/$_index_name/datamodel_summary,
where "$_index_name" is runtime-expanded to the name of the index
remotePath = <root path for remote volume, prefixed by a URI-like scheme>
* Optional.
* Presence of this setting means that this index uses remote storage, instead
of the local file system, as the main repository for bucket storage. The
index processor works with a cache manager to fetch buckets locally, as
necessary, for searching and to evict them from local storage as space fills
up and they are no longer needed for searching.
* This setting must be defined in terms of a storageType=remote volume
definition. See the volume section below.
* The path portion that follows the volume reference is relative to the path
specified for the volume. For example, if the path for a volume "v1" is
"s3://bucket/path" and 'remotePath' is "volume:v1/idx1", then the fully
qualified path is "s3://bucket/path/idx1". The rules for resolving the
relative path with the absolute path specified in the volume can vary
depending on the underlying storage type.
* If 'remotePath' is specified, the 'coldPath' and 'thawedPath' settings are
ignored. However, you must still specify them.
maxBloomBackfillBucketAge = <nonnegative integer>[smhd]|infinite
* If a (warm or cold) bucket with no bloomfilter is older than this,
splunkd does not create a bloomfilter for that bucket.
* When set to 0, splunkd never backfills bloomfilters.
* When set to "infinite", splunkd always backfills bloomfilters.
* NOTE: If 'createBloomfilter' is set to "false", bloomfilters are never
backfilled regardless of the value of this setting.
* The highest legal value in computed seconds is 2 billion, or 2000000000, which
is approximately 68 years.
* Default: 30d
hotlist_recency_secs = <unsigned integer>
* The cache manager attempts to defer bucket eviction until the interval
between the bucket's latest time and the current time exceeds this setting.
* Default: the global setting under server.conf/[cachemanager].
hotlist_bloom_filter_recency_hours = <unsigned integer>
* The cache manager attempts to defer eviction of the non-journal and non-tsidx
bucket files, such as the bloomfilter file, until the interval between the
bucket's latest time and the current time exceeds this setting.
* Default: the global setting under server.conf/[cachemanager].
enableOnlineBucketRepair = <boolean>
* Controls asynchronous "online fsck" bucket repair, which runs concurrently
with splunkd.
* When enabled, you do not have to wait until buckets are repaired, to start
splunkd.
* When enabled, you might observe a slight degradation in performance.
* You must set to "true" for remote storage enabled indexes.
* Default: true
enableDataIntegrityControl = <boolean>
* Whether or not splunkd computes hashes on rawdata slices and stores the hashes
for future data integrity checks.
* If set to "true", hashes are computed on the rawdata slices.
* If set to "false", no hashes are computed on the rawdata slices.
* Default: false
maxWarmDBCount = <nonnegative integer>
* The maximum number of warm buckets.
* Warm buckets are located in the 'homePath' for the index.
* If set to zero, splunkd does not retain any warm buckets
It rolls the buckets to cold as soon as it is able.
* Splunkd ignores this setting on remote storage enabled indexes.
* Highest legal value is 4294967295.
* Default: 300
maxTotalDataSizeMB = <nonnegative integer>
* The maximum size of an index, in megabytes.
* If an index grows larger than the maximum size, splunkd freezes the oldest
data in the index.
* This setting only applies to hot, warm, and cold buckets. It does
not apply to thawed buckets.
* CAUTION: This setting takes precedence over other settings like
'frozenTimePeriodInSecs' with regard to data retention. If the index
grows beyond 'maxTotalDataSizeMB' megabytes before
'frozenTimePeriodInSecs' seconds have passed, data could prematurely
roll to frozen. As the default policy for rolling data to frozen is
deletion, unintended data loss could occur.
* Splunkd ignores this setting on remote storage enabled indexes.
* Highest legal value is 4294967295
* Default: 500000
maxGlobalRawDataSizeMB = <nonnegative integer>
* The maximum amount of cumulative raw data (in MB) allowed in a remote
storage-enabled index.
* This setting is available for both standalone indexers and indexer clusters.
In the case of indexer clusters, the raw data size is calculated as the total
amount of raw data ingested for the index, across all peer nodes.
* When the amount of uncompressed raw data in an index exceeds the value of this
setting, the bucket containing the oldest data is frozen.
* For example, assume that the setting is set to 500 and the indexer cluster
has already ingested 400MB of raw data into the index, across all peer nodes.
If the cluster ingests an additional amount of raw data greater than 100MB in
size, the cluster freezes the oldest buckets, until the size of raw data
reduces to less than or equal to 500MB.
* This value applies to warm and cold buckets. It does not
apply to hot or thawed buckets.
* The maximum allowable value is 4294967295.
* Default: 0 (no limit to the amount of raw data in an index.)
maxGlobalDataSizeMB = <nonnegative integer>
* The maximum size, in megabytes, for all warm buckets in a SmartStore
index on a cluster.
* This setting includes the sum of the size of all buckets that reside on
remote storage, along with any buckets that have recently rolled from hot
to warm on a peer node and are awaiting upload to remote storage.
* If the total size that the warm buckets of an index occupy exceeds
'maxGlobalDataSizeMB', the oldest bucket in the index is frozen. For
example, assume that 'maxGlobalDataSizeMB' is set to 5000 for an index,
and the index's warm buckets occupy 4800 MB. If a 750 MB hot bucket then
rolls to warm, the index size now exceeds 'maxGlobalDataSizeMB', triggering
bucket freezing. The cluster freezes the oldest buckets on the index,
until the total warm bucket size falls below 'maxGlobalDataSizeMB'.
* The size calculation for this setting applies on a per-index basis.
* The calculation applies across all peers in the cluster.
* The calculation includes only one copy of each bucket. If a duplicate
copy of a bucket exists on a peer node, the size calculation does not
include it. For example, if the bucket exists on both remote storage and
on a peer node's local cache, the calculation ignores the copy
on local cache.
* The calculation includes only the size of the buckets themselves. It does not
include the size of any associated files, such as report acceleration
or data model acceleration summaries.
* The highest legal value is 4294967295.
* Default: 0 (No limit to the space that an index's warm buckets can occupy.)
rotatePeriodInSecs = <positive integer>
* Controls the service period (in seconds): how often splunkd performs
certain housekeeping tasks. Among these tasks are:
* Check if a new hot DB needs to be created.
* Check if there are any cold DBs that should be frozen.
* Check whether buckets need to be moved out of hot and cold DBs, due to
respective size constraints (i.e., homePath.maxDataSizeMB and
coldPath.maxDataSizeMB)
* This value becomes the default value of the 'rotatePeriodInSecs' setting
for all volumes (see 'rotatePeriodInSecs' in the Volumes section)
* The highest legal value is 4294967295.
* Default: 60
frozenTimePeriodInSecs = <nonnegative integer>
* The number of seconds after which indexed data rolls to frozen.
* If you do not specify a 'coldToFrozenScript', data is deleted when rolled to
frozen.
* NOTE: Every event in a bucket must be older than 'frozenTimePeriodInSecs'
seconds before the bucket rolls to frozen.
* The highest legal value is 4294967295.
* Default: 188697600 (6 years).
warmToColdScript = <script path>
* Specifies a script to run when moving data from warm to cold.
* This setting is supported for backwards compatibility with versions
older than 4.0. Migrating data across filesystems is now handled natively
by splunkd.
* If you specify a script here, the script becomes responsible for moving
the event data, and Splunk-native data migration is not used.
* The script must accept two arguments:
* First: the warm directory (bucket) to be rolled to cold.
* Second: the destination in the cold path.
* Searches and other activities are paused while the script is running.
* Contact Splunk Support (http://www.splunk.com/page/submit_issue) if you
need help configuring this setting.
* The script must be in $SPLUNK_HOME/bin or a subdirectory thereof.
* Splunkd ignores this setting for remote storage enabled indexes.
* Default: empty
coldToFrozenScript = <path to script interpreter> <path to script>
* Specifies a script to run when data is to leave the splunk index system.
* Essentially, this implements any archival tasks before the data is
deleted out of its default location.
* Add "$DIR" (including quotes) to this setting on Windows (see below
for details).
* Script Requirements:
* The script must accept one argument:
* An absolute path to the bucket directory to archive.
* Your script should work reliably.
* If your script returns success (0), Splunk completes deleting
the directory from the managed index location.
* If your script return failure (non-zero), Splunk leaves the bucket
in the index, and tries calling your script again several minutes later.
* If your script continues to return failure, this will eventually cause
the index to grow to maximum configured size, or fill the disk.
* Your script should complete in a reasonable amount of time.
* If the script stalls indefinitely, it will occupy slots.
* This script should not run for long as it would occupy
resources which will affect indexing.
* If the string $DIR is present in this setting, it will be expanded to the
absolute path to the directory.
* If $DIR is not present, the directory will be added to the end of the
invocation line of the script.
* This is important for Windows.
* For historical reasons, the entire string is broken up by
shell-pattern expansion rules.
* Since Windows paths frequently include spaces, and the Windows shell
breaks on space, the quotes are needed for the script to understand
the directory.
* If your script can be run directly on your platform, you can specify just
the script.
* Examples of this are:
* .bat and .cmd files on Windows
* scripts set executable on UNIX with a ! shebang line pointing to a
valid interpreter.
* You can also specify an explicit path to an interpreter and the script.
* Example: /path/to/my/installation/of/python.exe path/to/my/script.py
* Splunk software ships with an example archiving script in that you SHOULD
NOT USE $SPLUNK_HOME/bin called coldToFrozenExample.py
* DO NOT USE the example for production use, because:
* 1 - It will be overwritten on upgrade.
* 2 - You should be implementing whatever requirements you need in a
script of your creation. If you have no such requirements, use
'coldToFrozenDir'
* Example configuration:
* If you create a script in bin/ called our_archival_script.py, you could use:
UNIX:
coldToFrozenScript = "$SPLUNK_HOME/bin/python" \
"$SPLUNK_HOME/bin/our_archival_script.py"
Windows:
coldToFrozenScript = "$SPLUNK_HOME/bin/python" \
"$SPLUNK_HOME/bin/our_archival_script.py" "$DIR"
* The example script handles data created by different versions of Splunk
differently. Specifically, data from before version 4.2 and after version 4.2
are handled differently. See "Freezing and Thawing" below:
* The script must be in $SPLUNK_HOME/bin or a subdirectory thereof.
* No default.
coldToFrozenDir = <path to frozen archive>
* An alternative to a 'coldToFrozen' script - this setting lets you
specify a destination path for the frozen archive.
* Splunk software automatically puts frozen buckets in this directory
* For information on how buckets created by different versions are
handled, see "Freezing and Thawing" below.
* If both 'coldToFrozenDir' and 'coldToFrozenScript' are specified,
'coldToFrozenDir' takes precedence
* You must restart splunkd after changing this setting. Reloading the
configuration does not suffice.
* May NOT contain a volume reference.
Freezing and Thawing (this should move to web docs
4.2 and later data:
* To archive: remove files except for the rawdata directory, since rawdata
contains all the facts in the bucket.
* To restore: run splunk rebuild <bucket_dir> on the archived bucket, then
atomically move the bucket to thawed for that index
4.1 and earlier data:
* To archive: gzip the .tsidx files, as they are highly compressible but
cannot be recreated
* To restore: unpack the tsidx files within the bucket, then atomically
move the bucket to thawed for that index
compressRawdata = true|false
* This setting is ignored. The splunkd process always compresses raw data.
maxConcurrentOptimizes = <nonnegative integer>
* The number of concurrent optimize processes that can run against a hot
bucket.
* This number should be increased if:
* There are always many small tsidx files in the hot bucket.
* After rolling, there are many tsidx files in warm or cold buckets.
* You must restart splunkd after changing this setting. Reloading the
configuration does not suffice.
* The highest legal value is 4294967295.
* Default: 6
maxDataSize = <positive integer>|auto|auto_high_volume
* The maximum size, in megabytes, that a hot bucket can reach before splunkd
triggers a roll to warm.
* Specifying "auto" or "auto_high_volume" will cause Splunk to autotune this
setting (recommended).
* You should use "auto_high_volume" for high-volume indexes (such as the
main index); otherwise, use "auto". A "high volume index" would typically
be considered one that gets over 10GB of data per day.
* "auto_high_volume" sets the size to 10GB on 64-bit, and 1GB on 32-bit
systems.
* Although the maximum value you can set this is 1048576 MB, which
corresponds to 1 TB, a reasonable number ranges anywhere from 100 to
50000. Before proceeding with any higher value, please seek approval of
Splunk Support.
* If you specify an invalid number or string, maxDataSize will be auto
tuned.
* NOTE: The maximum size of your warm buckets may slightly exceed
'maxDataSize', due to post-processing and timing issues with the rolling
policy.
* For remote storage enabled indexes, consider setting this value to "auto"
(750MB) or lower.
* Default: "auto" (sets the size to 750 megabytes.)
rawFileSizeBytes = <positive integer>
* Deprecated in version 4.2 and later. Splunkd ignores this value.
* Rawdata chunks are no longer stored in individual files.
* If you really need to optimize the new rawdata chunks (highly unlikely),
configure the 'rawChunkSizeBytes' setting.
rawChunkSizeBytes = <positive integer>
* Target uncompressed size, in bytes, for individual raw slices in the rawdata
journal of the index.
* This is an advanced setting. Do not change it unless a Splunk Support
professional asks you to.
* If you specify "0", 'rawChunkSizeBytes' is set to the default value.
* NOTE: 'rawChunkSizeBytes' only specifies a target chunk size. The actual
chunk size may be slightly larger by an amount proportional to an
individual event size.
* You must restart splunkd after changing this setting. Reloading the
configuration does not suffice.
* The highest legal value is 18446744073709551615
* Default: 131072 (128 kilobytes).
minRawFileSyncSecs = <nonnegative decimal>|disable
* How frequently splunkd forces a filesystem sync while compressing journal
slices. During this interval, uncompressed slices are left on disk even
after they are compressed. Splunkd then forces a filesystem sync of the
compressed journal and remove the accumulated uncompressed files.
* If you specify "0", splunkd forces a filesystem sync after every slice
completes compressing.
* If you specify "disable", syncing is disabled entirely; uncompressed
slices are removed as soon as compression is complete.
* Some filesystems are very inefficient at performing sync operations, so
only enable this if you are sure you need it.
* You must restart splunkd after changing this setting. Reloading the
configuration does not suffice.
* No exponent may follow the decimal.
* The highest legal value is 18446744073709551615.
* Default: "disable"
maxMemMB = <nonnegative integer>
* The amount of memory, in megabytes, to allocate for indexing.
* This amount of memory will be allocated PER INDEX THREAD, or, if
indexThreads is set to 0, once per index.
* CAUTION: Calculate this number carefully. splunkd crashes if you set
this number to higher than the amount of memory available.
* The default is recommended for all environments.
* The highest legal value is 4294967295.
* Default: 5
maxHotSpanSecs = <positive integer>
* Upper bound of timespan of hot/warm buckets, in seconds.
* This is an advanced setting that should be set
with care and understanding of the characteristics of your data.
* Splunkd applies this limit per ingestion pipeline. For more
information about multiple ingestion pipelines, see
'parallelIngestionPipelines' in the server.conf.spec file.
* With N parallel ingestion pipelines, each ingestion pipeline writes to
and manages its own set of hot buckets, without taking into account the state
of hot buckets managed by other ingestion pipelines. Each ingestion pipeline
independently applies this setting only to its own set of hot buckets.
* If you set 'maxHotBuckets' to 1, splunkd attempts to send all
events to the single hot bucket and does not enforce 'maxHotSpanSeconds'.
* If you set this setting to less than 3600, it will be automatically
reset to 3600.
* NOTE: If you set this setting to too small a value, splunkd can generate
a very large number of hot and warm buckets within a short period of time.
* The highest legal value is 4294967295.
* NOTE: the bucket timespan snapping behavior is removed from this setting.
See the 6.5 spec file for details of this behavior.
* Default: 7776000 (90 days).
maxHotIdleSecs = <nonnegative integer>
* How long, in seconds, that a hot bucket can remain in hot status without
receiving any data.
* If a hot bucket receives no data for more than 'maxHotIdleSecs' seconds,
splunkd rolls the bucket to warm.
* This setting operates independently of 'maxHotBuckets', which can also cause
hot buckets to roll.
* A value of 0 turns off the idle check (equivalent to infinite idle time).
* The highest legal value is 4294967295
* Default: 0
maxHotBuckets = <positive integer>
* Maximum number of hot buckets that can exist per index.
* When 'maxHotBuckets' is exceeded, Splunk rolls the least recently used (LRU)
hot bucket to warm.
* Both normal hot buckets and quarantined hot buckets count towards this
total.
* This setting operates independently of maxHotIdleSecs, which can also
cause hot buckets to roll.
* NOTE: Splunkd applies this limit per ingestion pipeline. For more
information about multiple ingestion pipelines, see
'parallelIngestionPipelines' in the server.conf.spec file.
* With N parallel ingestion pipelines, the maximum number of hot buckets across
all of the ingestion pipelines is N * 'maxHotBuckets', but only
'maxHotBuckets' for each ingestion pipeline. Each ingestion pipeline
independently writes to and manages up to 'maxHotBuckets' number of hot
buckets. As a consequence of this, when multiple ingestion pipelines are
used, there may be multiple (dependent on number of ingestion pipelines
configured) hot buckets with events with overlapping time ranges.
* The highest legal value is 4294967295
* Default: 3
minHotIdleSecsBeforeForceRoll = <nonnegative integer>|auto
* When there are no existing hot buckets that can fit new events because of
their timestamps and the constraints on the index (refer to 'maxHotBuckets',
'maxHotSpanSecs' and 'quarantinePastSecs'), if any hot bucket has been idle
(not receiving any data) for 'minHotIdleSecsBeforeForceRoll' seconds,
a new bucket is created to receive these new events and the
idle bucket is rolled to warm.
* If no hot bucket has been idle for 'minHotIdleSecsBeforeForceRoll' seconds,
or if 'minHotIdleSecsBeforeForceRoll' has been set to 0, then a best fit
bucket is chosen for these new events from the existing set of hot buckets.
* This setting operates independently of 'maxHotIdleSecs', which causes hot
buckets to roll after they have been idle for 'maxHotIdleSecs' seconds,
regardless of whether new events can fit into the existing hot buckets or not
due to an event timestamp. 'minHotIdleSecsBeforeForceRoll', on the other hand,
controls a hot bucket roll only under the circumstances when the timestamp
of a new event cannot fit into the existing hot buckets given the other
setting constraints on the system (such as 'maxHotBuckets',
'maxHotSpanSecs', and 'quarantinePastSecs').
* If you specify "auto", splunkd autotunes this setting.
The value begins at 600 and automatically adjusts upwards for
optimal performance. Specifically, the value increases when a hot bucket rolls
due to idle time with a significantly smaller size than 'maxDataSize'. As a
consequence, the outcome might be fewer buckets, though these buckets might
span wider earliest-latest time ranges of events.
* If you specify a value of "0", splunkd turns off the idle check
(this is equivalent to infinite idle time).
* Setting this to zero means that splunkd never rolls a hot bucket as a
consequence of an event not fitting into an existing hot bucket due to the
constraints of other settings. Instead, it finds a best fitting
bucket to accommodate that event.
* The highest legal value is 4294967295.
* NOTE: If you configure this setting, there is a chance that this could
lead to frequent hot bucket rolls to warm, depending on the value. If your
index contains a large number of buckets whose size on disk falls
considerably short of the size specified in 'maxDataSize', and if the reason
for the roll of these buckets is due to "caller=lru", then configuring the
setting value to a larger value or to zero might reduce the frequency of hot
bucket rolls (see the "auto" value above). You can check splunkd.log for a
message like the following for rolls due to this setting:
INFO HotBucketRoller - finished moving hot to warm
bid=_internal~0~97597E05-7156-43E5-85B1-B0751462D16B idx=_internal
from=hot_v1_0 to=db_1462477093_1462477093_0 size=40960 caller=lru
maxHotBuckets=3, count=4 hot buckets,evicting_count=1 LRU hots
* Default: "auto"
splitByIndexKeys = <comma separated list>
* By default, splunkd splits buckets by time ranges with each bucket having its
earliest and latest time.
* If one or several keys are provided, splunkd splits buckets by the index key,
or a combination of the index keys if more than one key is provided. The
buckets will no longer be split by time ranges.
* Valid values are: host, sourcetype, source, metric_name
* This setting only applies to metric indexes.
* If not set, splunkd splits buckets by time span.
* Default: empty string (no key).
quarantinePastSecs = <positive integer>
* Determines what constitutes an anomalous past timestamp for quarantining
purposes.
* If an event has a timestamp of 'quarantinePastSecs' older than the
current time ("now"), the indexer puts that event in the quarantine bucket.
* This is a mechanism to prevent the main hot buckets from being polluted
with fringe events.
* The highest legal value is 4294967295
* Default: 77760000 (900 days).
quarantineFutureSecs = <positive integer>
* Determines what constitutes an anomalous future timestamp for quarantining
purposes.
* If an event has a timestamp of 'quarantineFutureSecs' newer than the
current time ("now"), the indexer puts that event in the quarantine bucket.
* This is a mechanism to prevent the main hot buckets from being polluted with
fringe events.
* The highest legal value is 4294967295
* Default: 2592000 (30 days).
maxMetaEntries = <nonnegative integer>
* The maximum number of unique lines in .data files in a bucket, which
might help to reduce memory consumption
* If this value is exceeded, a hot bucket is rolled to prevent further increase
* If your buckets are rolling due to Strings.data hitting this limit, the
culprit might be the 'punct' field in your data. If you do not use 'punct',
it might be best to simply disable this (see props.conf.spec)
* NOTE: since at least 5.0.x, large strings.data from usage of punct are rare.
* There is a delta between when 'maxMetaEntries' is exceeded and splunkd rolls
the bucket.
* This means a bucket might end up with more lines than specified in
'maxMetaEntries', but this is not a major concern unless that excess
is significant.
* If set to 0, splunkd ignores this setting (it is treated as infinite)
* Highest legal value is 4294967295.
* No default.
syncMeta = <boolean>
* Whether or not splunkd calls a sync operation before the file descriptor
is closed on metadata file updates.
* When set to "true", splunkd calls a sync operation before it closes the
file descriptor on metadata file updates.
* This functionality was introduced to improve integrity of metadata files,
especially in regards to operating system crashes/machine failures.
* NOTE: Do not change this setting without the input of a Splunk support
professional.
* You must restart splunkd after changing this setting. Reloading the
configuration does not suffice.
* Default: true
serviceMetaPeriod = <positive integer>
* Defines how frequently, in seconds, that metadata is synced to disk.
* You might want to set this to a higher value if the sum of your metadata
file sizes is larger than many tens of megabytes, to avoid the hit on I/O
in the indexing fast path.
* The highest legal value is 4294967295
* Default: 25
partialServiceMetaPeriod = <positive integer>
* The amount of time, in seconds, that splunkd syncs metadata for records that
can be synced efficiently in place without requiring a full rewrite of the
metadata file.
* Related to 'serviceMetaPeriod'. Records that require a full rewrite of the
metadata file are synced every 'serviceMetaPeriod' seconds.
* If you set this to 0, the feature is turned off, and 'serviceMetaPeriod'
is the only time when metadata sync happens.
* If the value of 'partialServiceMetaPeriod' is greater than
the value of 'serviceMetaPeriod', this setting has no effect.
* Splunkd ignores this setting if 'serviceOnlyAsNeeded' = "true" (the default).
* The highest legal value is 4294967295.
* Default: 0 (disabled).
throttleCheckPeriod = <positive integer>
* How frequently, in seconds, that splunkd checks for index throttling
conditions.
* NOTE: Do not change this setting unless a Splunk Support
professional asks you to.
* The highest legal value is 4294967295.
* Default: 15
maxTimeUnreplicatedWithAcks = <nonnegative decimal>
* How long, in seconds, that events can remain in an unacknowledged state
within a raw slice.
* This value is important if you have enabled indexer acknowledgment on
forwarders by configuring the 'useACK' setting in outputs.conf and
have enabled replication through indexer clustering.
* This is an advanced setting. Confirm that you understand the settings
on all your forwarders before changing it.
* Do not exceed the ack timeout configured on any forwarders.
* Set to a number that is at most half of the minimum value of that timeout.
Review the 'readTimeout' setting in the [tcpout] stanza in outputs.conf.spec
for information about the ack timeout.
* Configuring this setting to 0 disables the check. Do not do this.
* The highest legal value is 2147483647.
* Default: 60
maxTimeUnreplicatedNoAcks = <nonnegative decimal>
* How long, in seconds, that events can remain in a raw slice.
* This setting is important only if replication is enabled for this index,
otherwise it is ignored.
* If there are any acknowledged events that share this raw slice, this setting
does not apply. Instead, splunkd uses the value in the
'maxTimeUnreplicatedWithAcks' setting.)
* The highest legal value is 2147483647.
* Configuring this setting to 0 disables the check.
* Do not configure this setting on remote storage enabled indexes.
* NOTE: Take care and understand the consequences before changing this setting.
* Default: 300
isReadOnly = <boolean>
* Whether or not the index is read-only.
* If you set to "true", no new events can be added to the index, but the
index is still searchable.
* You must restart splunkd after changing this setting. Reloading the
index configuration does not suffice.
* Do not configure this setting on remote storage enabled indexes.
* Default: false
homePath.maxDataSizeMB = <nonnegative integer>
* Specifies the maximum size of 'homePath' (which contains hot and warm
buckets).
* If this size is exceeded, splunkd moves buckets with the oldest value
of latest time (for a given bucket) into the cold DB until homePath is
below the maximum size.
* If you set this setting to 0, or do not set it, splunkd does not constrain the
size of 'homePath'.
* The highest legal value is 4294967295.
* Splunkd ignores this setting for remote storage enabled indexes.
* Default: 0
coldPath.maxDataSizeMB = <nonnegative integer>
* Specifies the maximum size of 'coldPath' (which contains cold buckets).
* If this size is exceeded, splunkd freezes buckets with the oldest value
of latest time (for a given bucket) until coldPath is below the maximum
size.
* If you set this setting to 0, or do not set it, splunkd does not constrain the
size of 'coldPath'.
* If splunkd freezes buckets due to enforcement of this setting, and
'coldToFrozenScript' and/or 'coldToFrozenDir' archiving settings are also
set on the index, these settings are used.
* Splunkd ignores this setting for remote storage enabled indexes.
* The highest legal value is 4294967295.
* Default: 0
disableGlobalMetadata = <boolean>
* NOTE: This option was introduced in version 4.3.3, but as of 5.0 it
is obsolete and splunkd ignores it if you set it.
* It used to disable writing to the global metadata. In 5.0, global metadata
was removed.
repFactor = 0|auto
* Valid only for indexer cluster peer nodes.
* Determines whether an index gets replicated.
* Configuring this setting to 0 turns off replication for this index.
* Configuring to "auto" turns on replication for this index.
* You must configure this setting to the same value on all peer nodes.
* Default: 0
minStreamGroupQueueSize = <nonnegative integer>
* Minimum size of the queue that stores events in memory before committing
them to a tsidx file.
* As splunkd operates, it continually adjusts this size internally. Splunkd
could decide to use a small queue size and thus generate tiny tsidx files
under certain unusual circumstances, such as file system errors. The
danger of a very low minimum is that it can generate very tiny tsidx files
with one or very few events, making it impossible for splunk-optimize to
catch up and optimize the tsidx files into reasonably sized files.
* Do not configure this setting unless a Splunk Support professional
asks you to.
* The highest legal value is 4294967295.
* Default: 2000
streamingTargetTsidxSyncPeriodMsec = <nonnegative integer>
* The amount of time, in milliseconds, that splunkd forces a sync
of tsidx files on streaming targets.
* This setting is needed for multisite clustering where streaming targets
might be primary.
* If you configure this setting to 0, syncing of tsidx files on
streaming targets does not occur.
* No default.
journalCompression = gzip|lz4|zstd
* The compression algorthm that splunkd should use for the rawdata journal
file of new index buckets.
* This setting does not have any effect on already created buckets. There is
no problem searching buckets that are compressed with different algorithms.
* "zstd" is only supported in Splunk Enterprise version 7.2.x and higher. Do
not enable that compression format if you have an indexer cluster where some
indexers run an earlier version of Splunk Enterprise.
* Default: gzip
enableTsidxReduction = <boolean>
* Whether or not the tsidx reduction capability is enabled.
* By enabling this setting, you turn on the tsidx reduction capability.
This causes the indexer to reduce the tsidx files of buckets when the
buckets reach the age specified by 'timePeriodInSecBeforeTsidxReduction'.
* CAUTION: Do not set this setting to "true" on indexes that have been
configured to use remote storage with the "remotePath" setting.
* Default: false
tsidxWritingLevel = [1|2|3]
* Enables various performance and space-saving improvements for tsidx files.
* For deployments that do not have multi-site index clustering enabled,
set this to the highest value possible for all your indexes.
* For deploments that have multi-site index clustering, only set
this to the highest level possible AFTER all your indexers in the
cluster have been upgraded to the latest code level.
* Do not configure indexers with different values for 'tsidxWritingLevel'
as downlevel indexers cannot read tsidx files created from uplevel peers.
* The higher settings take advantage of newer tsidx file formats for
metrics and log events that decrease storage cost and increase performance
* Default: 1
suspendHotRollByDeleteQuery = <boolean>
* Whether or not splunkd rolls hot buckets upon running of the "delete"
search command, or waits to roll them for other reasons.
* When the "delete" search command is run, all buckets that contain data
to be deleted are marked for updating of their metadata files. The indexer
normally first rolls any hot buckets as rolling must precede the metadata
file updates.
* When 'suspendHotRollByDeleteQuery' is set to "true", the rolling of hot
buckets for the "delete" command is suspended. The hot buckets, although
marked, do not roll immediately, but instead wait to roll in response to
the same circumstances operative for any other hot buckets; for example,
due to reaching a limit set by 'maxHotBuckets', 'maxDataSize', etc. When
these hot buckets finally roll, their metadata files are then updated.
* Default: false
tsidxReductionCheckPeriodInSec = <positive integer>
* The amount of time, in seconds, between service runs to reduce the tsidx
files for any buckets that have reached the age specified by
'timePeriodInSecBeforeTsidxReduction'.
* Default: 600
timePeriodInSecBeforeTsidxReduction = <positive integer>
* The amount of time, in seconds, that a bucket can age before it
becomes eligible for tsidx reduction.
* The bucket age is the difference between the current time
and the timestamp of the bucket's latest event.
* When this time difference is exceeded, a bucket becomes eligible
for tsidx reduction.
* Default: 604800
datatype = <event|metric>
* Determines whether the index stores log events or metric data.
* If set to "metric", the indexer optimizes the index to store metric
data which can be queried later only using the 'mstats' operator,
as searching metric data is different from traditional log events.
* Use the "metric" data type only for metric sourcetypes like statsd.
* Optional.
* Default: event
PER PROVIDER FAMILY OPTIONS
A provider family is a way of collecting properties that are common to multiple providers. There are no properties that can only be used in a provider family, and not in a provider. If the same property is specified in a family, and in a provider belonging to that family, then the latter value "wins". All family stanzas begin with "provider-family:". For example: [provider-family:family_name] vix.mode=stream vix.command = java vix.command.arg.1 = -Xmx512m .... **************************************************************************
PER PROVIDER OPTIONS
These options affect External Resource Providers (ERPs). All provider stanzas
begin with "provider:". For example:
[provider:provider_name]
vix.family = hadoop
vix.env.JAVA_HOME = /path/to/java/home
vix.env.HADOOP_HOME = /path/to/hadoop/client/libraries
Each virtual index must reference a provider.
**************************************************************************
vix.family = <family>
* A provider family to which this provider belongs.
* The only family available by default is "hadoop". Others may be added.
vix.mode = stream|report
* Usually specified at the family level.
* Typically should be "stream".
* In general, do not use "report" without consulting Splunk Support.
vix.command = <command>
* The command to be used to launch an external process for searches on this
provider.
* Usually specified at the family level.
vix.command.arg.<N> = <argument>
* The Nth argument to the command specified by vix.command.
* Usually specified at the family level, but frequently overridden at the
provider level, for example to change the jars used depending on the
version of Hadoop to which a provider connects.
vix.<property name> = <property value>
* All such properties will be made available as "configuration properties" to
search processes on this provider.
* For example, if this provider is in the Hadoop family, the configuration
property "mapreduce.foo = bar" can be made available to the Hadoop
via the property "vix.mapreduce.foo = bar".
vix.env.<env var name> = <env var variable>
* Will create an environment variable available to search processes on this
provider.
* For example, to set the JAVA_HOME variable to "/path/java" for search
processes on this provider, use "vix.env.JAVA_HOME = /path/java".
**************************************************************************
PER PROVIDER OPTIONS -- HADOOP
These options are specific to ERPs with the Hadoop family.
NOTE: Many of these properties specify behavior if the property is not
set. However, default values set in system/default/indexes.conf
take precedence over the "unset" behavior.
**************************************************************************
vix.javaprops.<JVM system property name> = <value>
* All such properties will be used as Java system properties.
* For example, to specify a Kerberos realm (say "foo.com") as a Java
system property, use the property
"vix.javaprops.java.security.krb5.realm = foo.com".
vix.mapred.job.tracker = <logical name or server:port>
* In high-availability mode, use the logical name of the Job Tracker.
* Otherwise, should be set to server:port for the single Job Tracker.
* Note: this property is passed straight to Hadoop. Not all such properties
are documented here.
vix.fs.default.name = <logical name or hdfs://server:port>
* In high-availability mode, use the logical name for a list of Name Nodes.
* Otherwise, use the URL for the single Name Node.
* Note: this property is passed straight to Hadoop. Not all such properties
are documented here.
vix.splunk.setup.onsearch = true|false
* Whether to perform setup (install & bundle replication) on search.
* Default: false
vix.splunk.setup.package = current|<path to file>
* Splunk .tgz package to install and use on data nodes
(in vix.splunk.home.datanode).
* Uses the current install if set to value 'current' (without quotes).
vix.splunk.home.datanode = <path to dir>
* Path to where splunk should be installed on datanodes/tasktrackers, i.e.
SPLUNK_HOME.
* Required.
vix.splunk.home.hdfs = <path to dir>
* Scratch space for this Splunk instance on HDFS
* Required.
vix.splunk.search.debug = true|false
* Whether to run searches against this index in debug mode. In debug mode,
additional information is logged to search.log.
* Optional.
* Default: false
vix.splunk.search.recordreader = <list of classes>
* Comma separated list of data preprocessing classes.
* Each such class must extend BaseSplunkRecordReader and return data to be
consumed by Splunk as the value.
vix.splunk.search.splitter = <class name>
* Set to override the class used to generate splits for MR jobs.
* Classes must implement com.splunk.mr.input.SplitGenerator.
* Unqualified classes will be assumed to be in the package com.splunk.mr.input.
* May be specified in either the provider stanza, or the virtual index stanza.
* To search Parquet files, use ParquetSplitGenerator.
* To search Hive files, use HiveSplitGenerator.
vix.splunk.search.mr.threads = <postive integer>
* Number of threads to use when reading map results from HDFS
* Numbers less than 1 will be treated as 1.
* Numbers greater than 50 will be treated as 50.
* Default: 10
vix.splunk.search.mr.maxsplits = <positive integer>
* Maximum number of splits in an MR job.
* Default: 10000
vix.splunk.search.mr.minsplits = <positive integer>
* Number of splits for first MR job associated with a given search.
* Default: 100
vix.splunk.search.mr.splits.multiplier = <decimal greater than or equal to 1.0>
* Factor by which the number of splits is increased in consecutive MR jobs for
a given search, up to the value of maxsplits.
* Default: 10
vix.splunk.search.mr.poll = <positive integer>
* Polling period for job status, in milliseconds.
* Default: 1000 (1 second).
vix.splunk.search.mr.mapper.output.replication = <positive integer>
* Replication level for mapper output.
* Default: 3
vix.splunk.search.mr.mapper.output.gzlevel = <integer between 0 and 9, inclusive>
* The compression level used for the mapper output.
* Default: 2
vix.splunk.search.mixedmode = <boolean>
* Whether mixed mode execution is enabled.
* Default: true
vix.splunk.search.mixedmode.maxstream = <nonnegative integer>
* Maximum number of bytes to stream during mixed mode.
* Value = 0 means there's no stream limit.
* Will stop streaming after the first split that took the value over the limit.
* Default: 10737418240 (10 GB).
vix.splunk.jars = <list of paths>
* Comma delimited list of Splunk dirs/jars to add to the classpath in the
Search Head and MR.
vix.env.HUNK_THIRDPARTY_JARS = <list of paths>
* Comma delimited list of 3rd-party dirs/jars to add to the classpath in the
Search Head and MR.
vix.splunk.impersonation = true|false
* Enable/disable user impersonation.
vix.splunk.setup.bundle.replication = <positive integer>
* Set custom replication factor for bundles on HDFS.
* Must be an integer between 1 and 32767.
* Increasing this setting may help performance on large clusters by decreasing
the average access time for a bundle across Task Nodes.
* Optional.
* If not set, the default replication factor for the file-system applies.
vix.splunk.setup.bundle.max.inactive.wait = <positive integer>
* A positive integer represent a time interval in seconds.
* While a task waits for a bundle being replicated to the same node by another
task, if the bundle file is not modified for this amount of time, the task
will begin its own replication attempt.
* Default: 5
vix.splunk.setup.bundle.poll.interval = <positive integer>
* A positive number, representing a time interval in milliseconds.
* While a task waits for a bundle to be installed by another task on the same
node, it will check once per interval whether that installation is complete.
* Default: 100
vix.splunk.setup.bundle.setup.timelimit = <positive integer>
* A positive number, representing a time duration in milliseconds.
* A task will wait this long for a bundle to be installed before it quits.
* Default: 20000 (20 seconds).
vix.splunk.setup.package.replication = true|false
* Set custom replication factor for the Splunk package on HDFS. This is the
package set in the property vix.splunk.setup.package.
* Must be an integer between 1 and 32767.
* Increasing this setting may help performance on large clusters by decreasing
the average access time for the package across Task Nodes.
* Optional. If not set, the default replication factor for the file-system
will apply.
vix.splunk.setup.package.max.inactive.wait = <positive integer>
* A positive integer represent a time interval in seconds.
* While a task waits for a Splunk package being replicated to the same node by
another task, if the package file is not modified for this amount of time,
the task will begin its own replication attempt.
* Default: 5
vix.splunk.setup.package.poll.interval = <positive integer>
* A positive number, representing a time interval in milliseconds.
* While a task waits for a Splunk package to be installed by another task on
the same node, it will check once per interval whether that installation is
complete.
* Default: 100
vix.splunk.setup.package.setup.timelimit = <positive integer>
* A positive number, representing a time duration in milliseconds.
* A task will wait this long for a Splunk package to be installed before it quits.
* Default: 20000 (20 seconds).
vix.splunk.setup.bundle.reap.timelimit = <positive integer>
* Specific to Hunk provider
* For bundles in the working directory on each data node, this property controls
how old they must be before they are eligible for reaping.
* Unit is milliseconds
* Values larger than 86400000 will be treated as if set to 86400000.
* Default: 86400000 (24 hours).
vix.splunk.search.column.filter = <boolean>
* Enables/disables column filtering. When enabled, Hunk will trim columns that
are not necessary to a query on the Task Node, before returning the results
to the search process.
* Should normally increase performance, but does have its own small overhead.
* Works with these formats: CSV, Avro, Parquet, Hive.
* Default: true
Kerberos properties
vix.kerberos.principal = <kerberos principal name>
* Specifies principal for Kerberos authentication.
* Should be used with vix.kerberos.keytab and either
1) vix.javaprops.java.security.krb5.realm and
vix.javaprops.java.security.krb5.kdc, or
2) security.krb5.conf
vix.kerberos.keytab = <kerberos keytab path>
* Specifies path to keytab for Kerberos authentication.
* See usage note with vix.kerberos.principal.
The following properties affect the SplunkMR heartbeat mechanism. If this
mechanism is turned on, the SplunkMR instance on the Search Head updates a
heartbeat file on HDFS. Any MR job spawned by report or mix-mode searches
checks the heartbeat file. If it is not updated for a certain time, it will
consider SplunkMR to be dead and kill itself.
vix.splunk.heartbeat = <boolean>
* Turn on/off heartbeat update on search head, and checking on MR side.
* Default: true
vix.splunk.heartbeat.path = <path on HDFS>
* Path to heartbeat file.
* If not set, defaults to <vix.splunk.home.hdfs>/dispatch/<sid>/
vix.splunk.heartbeat.interval = <positive integer>
* The frequency, in milliseconds, with which the Heartbeat will be updated
on the Search Head.
* Minimum value is 1000. Smaller values will cause an exception to be thrown.
* Default: 6000 (6 seconds).
vix.splunk.heartbeat.threshold = <positive integer>
* The number of times the MR job will detect a missing heartbeat update before
it considers SplunkMR dead and kills itself.
* Default: 10
The following sections are specific to data input types.
Sequence file
vix.splunk.search.recordreader.sequence.ignore.key = <boolean>
* When reading sequence files, if this key is enabled, events will be expected
to only include a value. Otherwise, the expected representation is
key+"\t"+value.
* Default: true
Avro
vix.splunk.search.recordreader.avro.regex = <regex>
* Regex that files must match in order to be considered avro files.
* Optional.
* Default: \.avro$
Parquet
vix.splunk.search.splitter.parquet.simplifyresult = <boolean>
* If enabled, field names for map and list type fields will be simplified by
dropping intermediate "map" or "element" subfield names. Otherwise, a field
name will match parquet schema completely.
* May be specified in either the provider stanza or in the virtual index stanza.
* Default: true
Hive
vix.splunk.search.splitter.hive.ppd = <boolean>
* Enable or disable Hive ORC Predicate Push Down.
* If enabled, ORC PPD will be applied whenever possible to prune unnecessary
data as early as possible to optimize the search.
* May be specified in either the provider stanza or in the virtual index stanza.
* Default: true
vix.splunk.search.splitter.hive.fileformat = textfile|sequencefile|rcfile|orc
* Format of the Hive data files in this provider.
* May be specified in either the provider stanza or in the virtual index stanza.
* Default: "textfile".
vix.splunk.search.splitter.hive.dbname = <DB name>
* Name of Hive database to be accessed by this provider.
* Optional.
* May be specified in either the provider stanza or in the virtual index stanza.
* Default: "default".
vix.splunk.search.splitter.hive.tablename = <table name>
* Table accessed by this provider.
* Required property.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.columnnames = <list of column names>
* Comma-separated list of file names.
* Required if using Hive, not using metastore.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.columntypes = string:float:int COLON separated list of column types, required
* Colon-separated list of column- types.
* Required if using Hive, not using metastore.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.serde = <SerDe class>
* Fully-qualified class name of SerDe.
* Required if using Hive, not using metastore, and if specified in creation of Hive table.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.serde.properties = <list of key-value pairs>
* Comma-separated list of "key=value" pairs.
* Required if using Hive, not using metastore, and if specified in creation of Hive table.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.fileformat.inputformat = <InputFormat class>
* Fully-qualified class name of an InputFormat to be used with Hive table data.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.rowformat.fields.terminated = <delimiter>
* Will be set as the Hive SerDe property "field.delim".
* Optional.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.rowformat.escaped = <escape char>
* Will be set as the Hive SerDe property "escape.delim".
* Optional.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.rowformat.lines.terminated = <delimiter>
* Will be set as the Hive SerDe property "line.delim".
* Optional.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.rowformat.mapkeys.terminated = <delimiter>
* Will be set as the Hive SerDe property "mapkey.delim".
* Optional.
* May be specified in either the provider stanza or in the virtual index stanza.
vix.splunk.search.splitter.hive.rowformat.collectionitems.terminated = <delimiter>
* Will be set as the Hive SerDe property "colelction.delim".
* Optional.
* May be specified in either the provider stanza or in the virtual index stanza.
Archiving
vix.output.buckets.max.network.bandwidth = 0|<bits per second>
* Throttles network bandwidth to <bits per second>
* Set at provider level. Applied to all virtual indexes using a provider
with this setting.
* Default: 0 (no throttling).
PER VIRTUAL INDEX OPTIONS
These options affect virtual indexes. Like indexes, these options may
be set under an [<virtual-index>] entry.
Virtual index names have the same constraints as normal index names.
Each virtual index must reference a provider. I.e:
[virtual_index_name]
vix.provider = <provider_name>
All configuration keys starting with "vix." will be passed to the
external resource provider (ERP).
**************************************************************************
vix.provider = <provider_name>
* Name of the external resource provider to use for this virtual index.
**************************************************************************
PER VIRTUAL INDEX OPTIONS -- HADOOP
These options are specific to ERPs with the Hadoop family.
**************************************************************************
The vix.input.* configurations are grouped by an id.
Inputs configured via the UI always use '1' as the id.
In this spec we'll use 'x' as the id.
vix.input.x.path = <path>
* Path in a hadoop filesystem (usually HDFS or S3).
* May contain wildcards.
* Checks the path for data recursively when ending with '...'
* Can extract fields with ${field}. I.e: "/data/${server}/...", where server
will be extracted.
* May start with a schema.
* The schema of the path specifies which hadoop filesystem implementation to
use. Examples:
* hdfs://foo:1234/path, will use a HDFS filesystem implementation
* s3a://s3-bucket/path, will use a S3 filesystem implementation
vix.input.x.accept = <regex>
* Specifies a whitelist regex.
* Only files within the location given by matching vix.input.x.path, whose
paths match this regex, will be searched.
vix.input.x.ignore = <regex>
* Specifies a blacklist regex.
* Searches will ignore paths matching this regex.
* These matches take precedence over vix.input.x.accept matches.
vix.input.x.required.fields = <comma separated list of fields>
* Fields that will be kept in search results even if the field is not
required by the search
Earliest time extractions - For all 'et' settings, there's an equivalent 'lt' setting.
vix.input.x.et.regex = <regex>
* Regex extracting earliest time from vix.input.x.path
vix.input.x.et.format = <java.text.SimpleDateFormat date pattern>
* Format of the extracted earliest time.
* See documentation for java.text.SimpleDateFormat
vix.input.x.et.offset = <seconds>
* Offset in seconds to add to the extracted earliest time.
vix.input.x.et.timezone = <java.util.SimpleTimeZone timezone id>
* Timezone in which to interpret the extracted earliest time.
* Examples: "America/Los_Angeles" or "GMT-8:00"
vix.input.x.et.value = mtime|<epoch time in milliseconds>
* Sets the earliest time for this virtual index.
* Can be used instead of extracting times from the path via vix.input.x.et.regex
* When set to "mtime", uses the file modification time as the earliest time.
Latest time extractions - See "Earliest time extractions"
vix.input.x.lt.regex = <regex>
* Latest time equivalent of vix.input.x.et.regex
vix.input.x.lt.format = <java.text.SimpleDateFormat date pattern>
* Latest time equivalent of vix.input.x.et.format
vix.input.x.lt.offset = <seconds>
* Latest time equivalent of vix.input.x.et.offset
vix.input.x.lt.timezone = <java.util.SimpleTimeZone timezone id>
* Latest time equivalent of vix.input.x.et.timezone
vix.input.x.lt.value = <mod time>
* Latest time equivalent of vix.input.x.et.value
Archiving
vix.output.buckets.path = <hadoop path>
* Path to a hadoop filesystem where buckets will be archived
vix.output.buckets.older.than = <integer>
* The age of a bucket, in seconds, before it is archived.
* The age of a bucket is determined by the the earliest _time field of
any event in the bucket.
vix.output.buckets.from.indexes = <comma separated list of splunk indexes>
* List of (non-virtual) indexes that will get archived to this (virtual) index.
vix.unified.search.cutoff_sec = <seconds>
* Window length before present time that configures where events are retrieved
for unified search
* Events from now to now-cutoff_sec will be retrieved from the splunk index
and events older than cutoff_sec will be retrieved from the archive index
**************************************************************************
PER VIRTUAL INDEX OR PROVIDER OPTIONS -- HADOOP
These options can be set at either the virtual index level or provider
level, for the Hadoop ERP.
Options set at the virtual index level take precedence over options set
at the provider level.
Virtual index level prefix:
vix.input.<input_id>.<option_suffix>
Provider level prefix:
vix.splunk.search.<option_suffix>
**************************************************************************
The following options are just defined by their <option_suffix>
Record reader options
recordreader.<name>.<conf_key> = <conf_value>
* Sets a configuration key for a RecordReader with <name> to <conf_value>
recordreader.<name>.regex = <regex>
* Regex specifying which files this RecordReader can be used for.
recordreader.journal.buffer.size = <bytes>
* Buffer size used by the journal record reader
recordreader.csv.dialect = default|excel|excel-tab|tsv
* Set the csv dialect for csv files
* A csv dialect differs on delimiter_char, quote_char and escape_char.
* Here is a list of how the different dialects are defined in order delim,
quote, and escape:
* default = , " \
* excel = , " "
* excel-tab = \t " "
* tsv = \t " \
Splitter options
splitter.<name>.<conf_key> = <conf_value>
* Sets a configuration key for a split generator with <name> to <conf_value>
* See comment above under "PER VIRTUAL INDEX OR PROVIDER OPTIONS". This means
that the full format is:
vix.input.N.splitter.<name>.<conf_key> (in a vix stanza)
vix.splunk.search.splitter.<name>.<conf_key> (in a provider stanza)
splitter.file.split.minsize = <integer>
* Minimum size, in bytes, for file splits.
* Default: 1
splitter.file.split.maxsize = <integer>
* Maximum size, in bytes, for file splits.
* Default: Long.MAX_VALUE
**************************************************************************
Dynamic Data Self Storage settings.
This section describes settings that affect the archiver-
optional and archiver-mandatory settings only.
As the first step in the Dynamic Data Self Storage feature, it allows users
to move their data from Splunk indexes to customer-owned external storage
in AWS S3 when the data reaches the end of the retention period. Note that
only the raw data and delete marker files are transferred to the external
storage.
Future development may include the support for storage hierarchies and the
automation of data rehydration.
For example, use the following settings to configure Dynamic Data Self Storage.
archiver.selfStorageProvider = S3
archiver.selfStorageBucket = mybucket
archiver.selfStorageBucketFolder = folderXYZ
**************************************************************************
archiver.selfStorageProvider = <string>
* Currently not supported. This setting is related to a feature that is
still under development.
* Specifies the storage provider for Self Storage.
* Optional. Only required when using Self Storage.
* The only supported provider is S3. More providers will be added in the future
for other cloud vendors and other storage options.
archiver.selfStorageBucket = <string>
* Currently not supported. This setting is related to a feature that is
still under development.
* Specifies the destination bucket for Self Storage.
* Optional. Only required when using Self Storage.
archiver.selfStorageBucketFolder = <string>
* Currently not supported. This setting is related to a feature that is
still under development.
* Specifies the folder on the destination bucket for Self Storage.
* Optional.
* If not specified, data is uploaded to the root path in the destination bucket.
**************************************************************************
Dynamic Data Archive lets you move your data from your Splunk Cloud indexes to a
storage location. You can configure Splunk Cloud to automatically move the data
in an index when the data reaches the end of the Splunk Cloud retention period
you configure. In addition, you can restore your data to Splunk Cloud if you need
to perform some analysis on the data.
For each index, you can use Dynamic Data Self Storage or Dynamic Data Archive,
but not both.
For example, use the following settings to configure Dynamic Data Archive.
archiver.coldStorageProvider = Glacier
archiver.coldStorageRetentionPeriod = 365
**************************************************************************
archiver.coldStorageProvider = <string>
* Currently not supported. This setting is related to a feature that is
still under development.
* Specifies the storage provider for Dynamic Data Archive.
* Optional. Only required when using Dynamic Data Archive.
* The only supported provider is Glacier. More providers will be added in the
future for other cloud vendors and other storage options.
archiver.coldStorageRetentionPeriod = <unsigned integer>
* Currently not supported. This setting is related to a feature that is
still under development.
* Defines how long Splunk will maintain data in days, including the
archived period.
* Optional. Only required when using Dynamic Data Archive.
* Must be greater than 0
archiver.enableDataArchive = <boolean>
* Currently not supported. This setting is related to a feature that is
still under development.
* If set to true, Dynamic Data Archiver is enabled for the index.
* Default: false
archiver.maxDataArchiveRetentionPeriod = <nonnegative integer>
* Currently not supported. This setting is related to a feature that is
still under development.
* The maximum total time in seconds, that data for the specified index is
maintained by Splunk, including the archived period.
* The archiver.maxDataArchiveRetentionPeriod controls the maximum value of the
coldStorageRetentionPeriod. coldStorageRetentionPeriod cannot exceed this
value.
* Default: 0
**************************************************************************
Volume settings. This section describes settings that affect the volume-
optional and volume-mandatory settings only.
All volume stanzas begin with "volume:". For example:
[volume:volume_name]
path = /foo/bar
These volume stanzas can then be referenced by individual index
settings, e.g. homePath or coldPath. To refer to a volume stanza, use
the "volume:" prefix. For example, to set a cold DB to the example stanza
above, in index "hiro", use:
[hiro]
coldPath = volume:volume_name/baz
This will cause the cold DB files to be placed under /foo/bar/baz. If the
volume spec is not followed by a path
(e.g. "coldPath=volume:volume_name"), then the cold path would be
composed by appending the index name to the volume name ("/foo/bar/hiro").
If "path" is specified with a URI-like value (e.g., "s3://bucket/path"),
this is a remote storage volume. A remote storage volume can only be
referenced by a remotePath setting, as described above. An Amazon S3
remote path might look like "s3://bucket/path", whereas an NFS remote path
might look like "file:///mnt/nfs". The name of the scheme ("s3" or "file"
from these examples) is important, because it can indicate some necessary
configuration specific to the type of remote storage. To specify a
configuration under the remote storage volume stanza, you use settings
with the pattern "remote.<scheme>.<param name>". These settings vary
according to the type of remote storage. For example, remote storage of
type S3 might require that you specify an access key and a secret key.
You would do this through the "remote.s3.access_key" and
"remote.s3.secret_key" settings.
Note: thawedPath may not be defined in terms of a volume.
Thawed allocations are manually controlled by Splunk administrators,
typically in recovery or archival/review scenarios, and should not
trigger changes in space automatically used by normal index activity.
**************************************************************************
storageType = local | remote
* Optional.
* Specifies whether the volume definition is for indexer local storage or remote
storage. Only the 'remotePath' setting references a remote volume.
* Default: "local".
path = <path on server>
* Required.
* If storageType is set to its default value of "local":
* The 'path' setting points to the location on the file system where al
indexes that will use this volume reside.
* This location must not overlap with the location for any other volume
or index.
* If storageType is set to "remote":
* The 'path' setting points to the remote storage location where indexes
reside.
* The format for this setting is: <scheme>://<remote-location-specifier>
* The "scheme" identifies a supported external storage system type.
* The "remote-location-specifier" is an external system-specific string for
identifying a location inside the storage system.
maxVolumeDataSizeMB = <positive integer>
* If set, this setting limits the total size of all databases that reside
on this volume to the maximum size specified, in MB. Note that this it
will act only on those indexes which reference this volume, not on the
total size of the path set in the 'path' setting of this volume.
* If the size is exceeded, splunkd removes buckets with the oldest value
of latest time (for a given bucket) across all indexes in the volume,
until the volume is below the maximum size. This is the trim operation.
This can cause buckets to be chilled [moved to cold] directly
from a hot DB, if those buckets happen to have the least value of
latest-time (LT) across all indexes in the volume.
* The highest legal value is 4294967295.
* The lowest legal value is 1.
* Optional.
* This setting is ignored when 'storageType' is set to "remote".
rotatePeriodInSecs = <nonnegative integer>
* Optional, ignored for storageType=remote
* Specifies period of trim operation for this volume.
* The highest legal value is 4294967295.
* Default: the global 'rotatePeriodInSecs' value.
datatype = <event|metric>
* Determines whether the index stores log events or metric data.
* If set to "metric", Splunk software optimize the index to store
metric data which can be queried later only using the 'mstats'
operator as searching metric data is different from traditional
log events.
* Use "metric" only for metric sourcetypes like statsd.
* Optional.
* Default: event
remote.* = <string>
* With remote volumes, communication between the indexer and the external
storage system may require additional configuration, specific to the type of
storage system. You can pass configuration information to the storage
system by specifying the settings through the following schema:
remote.<scheme>.<config-variable> = <value>.
For example: remote.s3.access_key = ACCESS_KEY
* Optional.
S3 specific settings
remote.s3.header.<http-method-name>.<header-field-name> = <string>
* Enable server-specific features, such as reduced redundancy, encryption,
and so on, by passing extra HTTP headers with the REST requests.
The <http-method-name> can be any valid HTTP method. For example, GET,
PUT, or ALL, for setting the header field for all HTTP methods.
* Example: remote.s3.header.PUT.x-amz-storage-class = REDUCED_REDUNDANCY
* Optional.
remote.s3.access_key = <string>
* Specifies the access key to use when authenticating with the remote storage
system supporting the S3 API.
* If not specified, the indexer will look for these environment variables:
AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY (in that order).
* If the environment variables are not set and the indexer is running on EC2,
the indexer attempts to use the access key from the IAM role.
* Optional.
* Default: not set
remote.s3.secret_key = <string>
* Specifies the secret key to use when authenticating with the remote storage
system supporting the S3 API.
* If not specified, the indexer will look for these environment variables:
AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY (in that order).
* If the environment variables are not set and the indexer is running on EC2,
the indexer attempts to use the secret key from the IAM role.
* Optional.
* Default: not set
remote.s3.list_objects_version = v1|v2
* The AWS S3 Get Bucket (List Objects) Version to use.
* See AWS S3 documentation "GET Bucket (List Objects) Version 2" for details.
* Default: v1
remote.s3.signature_version = v2|v4
* The signature version to use when authenticating with the remote storage
system supporting the S3 API.
* For 'sse-kms' server-side encryption scheme, you must use signature_version=v4.
* Optional.
* Default: v4
remote.s3.auth_region = <string>
* The authentication region to use for signing requests when interacting
with the remote storage system supporting the S3 API.
* Used with v4 signatures only.
* If unset and the endpoint (either automatically constructed or explicitly
set with remote.s3.endpoint setting) uses an AWS URL (for example,
https://s3-us-west-1.amazonaws.com), the instance attempts to extract
the value from the endpoint URL (for example, "us-west-1"). See the
description for the remote.s3.endpoint setting.
* If unset and an authentication region cannot be determined, the request
will be signed with an empty region value.
* Optional.
* Default: not set
remote.s3.use_delimiter = <boolean>
* Specifies whether a delimiter (currently "guidSplunk") should be
used to list the objects that are present on the remote storage.
* A delimiter groups objects that have the same delimiter value
so that the listing process can be more efficient as it
does not need to report similar objects.
* Optional.
* Default: true
remote.s3.supports_versioning = <boolean>
* Specifies whether the remote storage supports versioning.
* Versioning is a means of keeping multiple variants of an object
in the same bucket on the remote storage.
* Optional.
* Default: true
remote.s3.endpoint = <URL>
* The URL of the remote storage system supporting the S3 API.
* The scheme, http or https, can be used to enable or disable SSL connectivity
with the endpoint.
* If not specified and the indexer is running on EC2, the endpoint will be
constructed automatically based on the EC2 region of the instance where the
indexer is running, as follows: https://s3-<region>.amazonaws.com
* Example: https://s3-us-west-2.amazonaws.com
* Optional.
remote.s3.multipart_download.part_size = <unsigned integer>
* Sets the download size of parts during a multipart download.
* This setting uses HTTP/1.1 Range Requests (RFC 7233) to improve throughput
overall and for retransmission of failed transfers.
* A value of 0 disables downloading in multiple parts, i.e., files will always
be downloaded as a single (large) part.
* Do not change this value unless that value has been proven to improve
throughput.
* Optional.
* Minimum value: 5242880 (5 MB)
* Default: 134217728 (128 MB)
remote.s3.multipart_upload.part_size = <unsigned integer>
* Sets the upload size of parts during a multipart upload.
* Optional.
* Minimum value: 5242880 (5 MB)
* Default: 134217728 (128 MB)
remote.s3.multipart_max_connections = <unsigned integer>
* Specifies the maximum number of HTTP connections to have in progress for
either multipart download or upload.
* A value of 0 means unlimited.
* Default: 8
remote.s3.enable_data_integrity_checks = <boolean>
* If set to true, Splunk sets the data checksum in the metadata field of the
HTTP header during upload operation to S3.
* The checksum is used to verify the integrity of the data on uploads.
* Default: false
remote.s3.enable_signed_payloads = <boolean>
* If set to true, Splunk signs the payload during upload operation to S3.
* Valid only for remote.s3.signature_version = v4
* Default: true
remote.s3.retry_policy = max_count
* Sets the retry policy to use for remote file operations.
* A retry policy specifies whether and how to retry file operations that fail
for those failures that might be intermittent.
* Retry policies:
+ "max_count": Imposes a maximum number of times a file operation will be
retried upon intermittent failure both for individual parts of a multipart
download or upload and for files as a whole.
* Optional.
* Default: max_count
remote.s3.max_count.max_retries_per_part = <unsigned integer>
* When the remote.s3.retry_policy setting is max_count, sets the maximum number
of times a file operation will be retried upon intermittent failure.
* The count is maintained separately for each file part in a multipart download
or upload.
* Optional.
* Default: 9
remote.s3.max_count.max_retries_in_total = <unsigned integer>
* When the remote.s3.retry_policy setting is max_count, sets the maximum number
of times a file operation will be retried upon intermittent failure.
* The count is maintained for each file as a whole.
* Optional.
* Default: 128
remote.s3.timeout.connect = <unsigned integer>
* Set the connection timeout, in milliseconds, to use when interacting
with S3 for this volume
* Optional.
* Default: 5000
remote.s3.timeout.read = <unsigned integer>
* Set the read timeout, in milliseconds, to use when interacting with
S3 for this volume
* Optional.
* Default: 60000
remote.s3.timeout.write = <unsigned integer>
* Set the write timeout, in milliseconds, to use when interacting with
S3 for this volume
* Optional.
* Default: 60000
remote.s3.sslVerifyServerCert = <boolean>
* If this is set to true, Splunk verifies certificate presented by S3
server and checks that the common name/alternate name matches the ones
specified in 'remote.s3.sslCommonNameToCheck' and
'remote.s3.sslAltNameToCheck'.
* Optional
* Default: false
remote.s3.sslVersions = <versions_list>
* Comma-separated list of SSL versions to connect to 'remote.s3.endpoint'.
* The versions available are "ssl3", "tls1.0", "tls1.1", and "tls1.2".
* The special version "*" selects all supported versions. The version "tls"
selects all versions tls1.0 or newer.
* If a version is prefixed with "-" it is removed from the list.
* SSLv2 is always disabled; "-ssl2" is accepted in the version list
but does nothing.
* When configured in FIPS mode, ssl3 is always disabled regardless
of this configuration.
* Optional.
* Default: tls1.2
remote.s3.sslCommonNameToCheck = <commonName1>, <commonName2>, ..
* If this value is set, and 'remote.s3.sslVerifyServerCert' is set to true,
splunkd checks the common name of the certificate presented by
the remote server (specified in 'remote.s3.endpoint') against this list
of common names.
* Default: not set
remote.s3.sslAltNameToCheck = <alternateName1>, <alternateName2>, ..
* If this value is set, and 'remote.s3.sslVerifyServerCert' is set to true,
splunkd checks the alternate name(s) of the certificate presented by
the remote server (specified in 'remote.s3.endpoint') against this list of
subject alternate names.
* Default: not set
remote.s3.sslRootCAPath = <path>
* Full path to the Certificate Authority (CA) certificate PEM format file
containing one or more certificates concatenated together. S3 certificate
will be validated against the CAs present in this file.
* Optional.
* Default: [sslConfig/caCertFile] in server.conf
remote.s3.cipherSuite = <cipher suite string>
* If set, uses the specified cipher string for the SSL connection.
* If not set, uses the default cipher string.
* Must specify 'dhFile' to enable any Diffie-Hellman ciphers.
* Optional.
* Default: TLSv1+HIGH:TLSv1.2+HIGH:@STRENGTH
remote.s3.ecdhCurves = <comma-separated list>
* ECDH curves to use for ECDH key negotiation.
* The curves should be specified in the order of preference.
* The client sends these curves as a part of Client Hello.
* Splunk software only supports named curves specified
by their SHORT names.
* The list of valid named curves by their short/long names can be obtained
by executing this command:
$SPLUNK_HOME/bin/splunk cmd openssl ecparam -list_curves
* e.g. ecdhCurves = prime256v1,secp384r1,secp521r1
* Optional.
* Default: not set
remote.s3.dhFile = <path>
* PEM format Diffie-Hellman parameter file name.
* DH group size should be no less than 2048bits.
* This file is required in order to enable any Diffie-Hellman ciphers.
* Optional.
* Default: not set
remote.s3.encryption = sse-s3 | sse-kms | sse-c | none
* Specifies the scheme to use for Server-side Encryption (SSE) for data-at-rest.
* sse-s3: Check http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingServerSideEncryption.html
* sse-kms: Check http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingKMSEncryption.html
* sse-c: Check http://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
* none: no Server-side encryption enabled. Data is stored unencrypted on the
remote storage.
* Optional.
* Default: none
remote.s3.encryption.sse-c.key_type = kms
* Determines the mechanism Splunk uses to generate the key for sending over to
S3 for SSE-C.
* The only valid value is 'kms', indicating AWS KMS service.
* One must specify required KMS settings: e.g. remote.s3.kms.key_id
for Splunk to start up while using SSE-C.
* Optional.
* Default: kms
remote.s3.encryption.sse-c.key_refresh_interval = <unsigned integer>
* Specifies period in seconds at which a new key will be generated and used
for encrypting any new data being uploaded to S3.
* Optional.
* Default: 86400
remote.s3.kms.key_id = <string>
* Required if remote.s3.encryption = sse-c | sse-kms
* Specifies the identifier for Customer Master Key (CMK) on KMS. It can be the
unique key ID or the Amazon Resource Name (ARN) of the CMK or the alias
name or ARN of an alias that refers to the CMK.
* Examples:
Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
CMK ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
Alias name: alias/ExampleAlias
Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias
* Default: not set
remote.s3.kms.access_key = <string>
* Similar to 'remote.s3.access_key'.
* If not specified, KMS access uses 'remote.s3.access_key'.
* Optional.
* Default: not set
remote.s3.kms.secret_key = <string>
* Similar to 'remote.s3.secret_key'.
* If not specified, KMS access uses 'remote.s3.secret_key'.
* Optional.
* Default: not set
remote.s3.kms.auth_region = <string>
* Required if 'remote.s3.auth_region' is unset and Splunk can not
automatically extract this information.
* Similar to 'remote.s3.auth_region'.
* If not specified, KMS access uses 'remote.s3.auth_region'.
* Default: not set
remote.s3.kms.max_concurrent_requests = <unsigned integer>
* Optional.
* Limits maximum concurrent requests to KMS from this Splunk instance.
* NOTE: Can severely affect search performance if set to very low value.
* Default: 10
remote.s3.kms.<ssl_settings> = <...>
* Optional.
* Check the descriptions of the SSL settings for remote.s3.<ssl_settings>
above. e.g. remote.s3.sslVerifyServerCert.
* Valid ssl_settings are sslVerifyServerCert, sslVersions, sslRootCAPath,
sslAltNameToCheck, sslCommonNameToCheck, cipherSuite, ecdhCurves, and dhFile.
* All of these settings are optional.
* All of these settings have the same defaults as
'remote.s3.<ssl_settings>'.
indexes.conf.example
# Version 7.3.2 # # This file contains an example indexes.conf. Use this file to configure # indexing properties. # # To use one or more of these configurations, copy the configuration block # into indexes.conf in $SPLUNK_HOME/etc/system/local/. You must restart # Splunk to enable configurations. # # To learn more about configuration files (including precedence) please see # the documentation located at # http://docs.splunk.com/Documentation/Splunk/latest/Admin/Aboutconfigurationfiles # # The following example defines a new high-volume index, called "hatch", and # sets this to be the default index for both incoming data and search. # # Note that you may want to adjust the indexes that your roles have access # to when creating indexes (in authorize.conf) defaultDatabase = hatch [hatch] homePath = $SPLUNK_DB/hatchdb/db coldPath = $SPLUNK_DB/hatchdb/colddb thawedPath = $SPLUNK_DB/hatchdb/thaweddb maxDataSize = 10000 maxHotBuckets = 10 # The following example changes the default amount of space used on a # per-index basis. [default] maxTotalDataSizeMB = 650000 maxGlobalRawDataSizeMB = 0 maxGlobalDataSizeMB = 0 # The following example changes the time data is kept around by default. # It also sets an export script. NOTE: You must edit this script to set # export location before running it. [default] maxWarmDBCount = 200 frozenTimePeriodInSecs = 432000 rotatePeriodInSecs = 30 coldToFrozenScript = "$SPLUNK_HOME/bin/python" "$SPLUNK_HOME/bin/myColdToFrozenScript.py" # This example freezes buckets on the same schedule, but lets Splunk do the # freezing process as opposed to a script [default] maxWarmDBCount = 200 frozenTimePeriodInSecs = 432000 rotatePeriodInSecs = 30 coldToFrozenDir = "$SPLUNK_HOME/myfrozenarchive" ### This example demonstrates the use of volumes ### # volume definitions; prefixed with "volume:" [volume:hot1] path = /mnt/fast_disk maxVolumeDataSizeMB = 100000 [volume:cold1] path = /mnt/big_disk # maxVolumeDataSizeMB not specified: no data size limitation on top of the # existing ones [volume:cold2] path = /mnt/big_disk2 maxVolumeDataSizeMB = 1000000 # index definitions [idx1] homePath = volume:hot1/idx1 coldPath = volume:cold1/idx1 # thawedPath must be specified, and cannot use volume: syntax # choose a location convenient for reconstitition from archive goals # For many sites, this may never be used. thawedPath = $SPLUNK_DB/idx1/thaweddb [idx2] # note that the specific indexes must take care to avoid collisions homePath = volume:hot1/idx2 coldPath = volume:cold2/idx2 thawedPath = $SPLUNK_DB/idx2/thaweddb [idx3] homePath = volume:hot1/idx3 coldPath = volume:cold2/idx3 thawedPath = $SPLUNK_DB/idx3/thaweddb ### Indexes may be allocated space in effective groups by sharing volumes ### # perhaps we only want to keep 100GB of summary data and other # low-volume information [volume:small_indexes] path = /mnt/splunk_indexes maxVolumeDataSizeMB = 100000 # and this is our main event series, allowing 50 terabytes [volume:large_indexes] path = /mnt/splunk_indexes maxVolumeDataSizeMB = 50000000 # summary and rare_data together will be limited to 100GB [summary] homePath=volume:small_indexes/summary/db coldPath=volume:small_indexes/summary/colddb thawedPath=$SPLUNK_DB/summary/thaweddb # low-volume indexes probably don't want a lot of hot buckets maxHotBuckets = 2 # if the volume is quite low, and you have data sunset goals you may # want to have smaller buckets maxDataSize = 500 [rare_data] homePath=volume:small_indexes/rare_data/db coldPath=volume:small_indexes/rare_data/colddb thawedPath=$SPLUNK_DB/rare_data/thaweddb maxHotBuckets = 2 # main, and any other large volume indexes you add sharing large_indexes # will be together be constrained to 50TB, separately from the 100GB of # the small_indexes [main] homePath=volume:large_indexes/main/db coldPath=volume:large_indexes/main/colddb thawedPath=$SPLUNK_DB/main/thaweddb # large buckets and more hot buckets are desirable for higher volume # indexes, and ones where the variations in the timestream of events is # hard to predict. maxDataSize = auto_high_volume maxHotBuckets = 10 [idx1_large_vol] homePath=volume:large_indexes/idx1_large_vol/db coldPath=volume:large_indexes/idx1_large_vol/colddb homePath=$SPLUNK_DB/idx1_large/thaweddb # this index will exceed the default of .5TB requiring a change to maxTotalDataSizeMB maxTotalDataSizeMB = 750000 maxDataSize = auto_high_volume maxHotBuckets = 10 # but the data will only be retained for about 30 days frozenTimePeriodInSecs = 2592000 ### This example demonstrates database size constraining ### # In this example per-database constraint is combined with volumes. While a # central volume setting makes it easy to manage data size across multiple # indexes, there is a concern that bursts of data in one index may # significantly displace data from others. The homePath.maxDataSizeMB setting # can be used to assure that no index will ever take more than certain size, # therefore alleviating the concern. # global settings # will be inherited by all indexes: no database will exceed 1TB homePath.maxDataSizeMB = 1000000 # volumes [volume:caliente] path = /mnt/fast_disk maxVolumeDataSizeMB = 100000 [volume:frio] path = /mnt/big_disk maxVolumeDataSizeMB = 1000000 # and this is our main event series, allowing about 50 terabytes [volume:large_indexes] path = /mnt/splunk_indexes maxVolumeDataSizeMB = 50000000 # indexes [i1] homePath = volume:caliente/i1 # homePath.maxDataSizeMB is inherited coldPath = volume:frio/i1 # coldPath.maxDataSizeMB not specified: no limit - old-style behavior thawedPath = $SPLUNK_DB/i1/thaweddb [i2] homePath = volume:caliente/i2 # overrides the default maxDataSize homePath.maxDataSizeMB = 1000 coldPath = volume:frio/i2 # limits the cold DB's coldPath.maxDataSizeMB = 10000 thawedPath = $SPLUNK_DB/i2/thaweddb [i3] homePath = /old/style/path homePath.maxDataSizeMB = 1000 coldPath = volume:frio/i3 coldPath.maxDataSizeMB = 10000 thawedPath = $SPLUNK_DB/i3/thaweddb # main, and any other large volume indexes you add sharing large_indexes # will together be constrained to 50TB, separately from the rest of # the indexes [main] homePath=volume:large_indexes/main/db coldPath=volume:large_indexes/main/colddb thawedPath=$SPLUNK_DB/main/thaweddb # large buckets and more hot buckets are desirable for higher volume indexes maxDataSize = auto_high_volume maxHotBuckets = 10 ### This example demonstrates how to configure a volume that points to ### S3-based remote storage and indexes that use this volume. The setting ### "storageType=remote" indicates that this is a remote-storage volume. ### The "remotePath" parameter associates the index with that volume ### and configures a top-level location for uploading buckets. [volume:s3] storageType = remote path = s3://example-s3-bucket/remote_volume remote.s3.access_key = S3_ACCESS_KEY remote.s3.secret_key = S3_SECRET_KEY [default] remotePath = volume:s3/$_index_name [i4] coldPath = $SPLUNK_DB/$_index_name/colddb homePath = $SPLUNK_DB/$_index_name/db thawedPath = $SPLUNK_DB/$_index_name/thaweddb [i5] coldPath = $SPLUNK_DB/$_index_name/colddb homePath = $SPLUNK_DB/$_index_name/db thawedPath = $SPLUNK_DB/$_index_name/thaweddb
Last modified on 17 September, 2019
| health.conf | inputs.conf |
This documentation applies to the following versions of Splunk® Enterprise: 7.3.2
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