serverclass.conf

The following are the spec and example files for serverclass.conf.

serverclass.conf.spec

#   Version 9.4.0
#
# This file contains possible attributes and values for defining server
# classes to which deployment clients can belong. These attributes and
# values specify what content a given server class member will receive from
# the deployment server.
#
# For examples, see serverclass.conf.example. You must reload the deployment
# server configuration ("splunk reload deploy-server"), or restart splunkd,
# for changes to this file to take effect.
#
# To learn more about configuration files (including precedence) please see
# the documentation located at
# http://docs.splunk.com/Documentation/Splunk/latest/Admin/Aboutconfigurationfiles



#***************************************************************************
# Configure the server classes used by a deployment server instance.
#
# Server classes are essentially categories. They use filters to control
# what clients they apply to, contain a set of applications, and might define
# deployment server behavior for the management of those applications. The
# filters can be based on DNS name, IP address, build number of client
# machines, platform, and the clientName. If a target machine
# matches the filter, then the deployment server deploys the apps and configuration
# content that make up the server class to that machine.

# Property Inheritance
#
# Stanzas in serverclass.conf go from general to more specific, in the
# following order:
# [global] -> [serverClass:<name>] -> [serverClass:<scname>:app:<appname>]
#
# Some properties defined in the [global] stanza can be
# overridden by a more specific stanza as it applies to them. If a global
# setting can be overridden, the description says so.

FIRST LEVEL: global ###########


# Global stanza that defines properties for all server classes.
[global]

disabled = <boolean>
* Toggles the deployment server off and on.
* Set to true to disable.
* Default: false

crossServerChecksum = <boolean>
* Ensures that each app has the same checksum across different deployment
  servers.
* Useful if you have multiple deployment servers behind a load-balancer.
* Default: false

excludeFromUpdate = <comma-separated list>
* Specifies paths to one or more top-level files or directories (and their
  contents) to exclude from being touched during app update.  Note that
  each comma-separated entry MUST be prefixed by "$app_root$/"
  to avoid warning messages.
* Can be overridden at the serverClass level.
* Can be overridden at the app level.
* Requires version 6.2.x or higher for both the deployment server and client.

repositoryLocation = <path>
* The repository of applications on the server machine.
* Can be overridden at the serverClass level.
* Default: $SPLUNK_HOME/etc/deployment-apps

syncMode = [none | sharedDir]
* Specifies whether deployment apps are shared across multiple deployment servers.
* A value of "none" means the set of deployment apps are specific to
  this deployment server only and are not shared with any other
  deployment servers.
* A value of "sharedDir" means multiple deployment servers share the same
  deployment app directory and will sync app bundles and serverclass.conf.
* Each deployment server specifies its app directory with the
  the 'repositoryLocation' setting.
* When the deployment server reloads, either through manual intervention via
  the CLI or the REST endpoint or automatically in response to the forwarder
  management interface, the deployment server updates the
  "_splunk_ds_info/_metadata" file in the shared deployment server app
  directory. The other deployment servers sharing the directory periodically
  check that file to determine whether they need to run a reload.
* Default: "none"

maxConcurrentDownloads = <positive integer>
* The maximum number of deployment clients that can simultaneously download
  the bundle from the deployment server.
* If a deployment client fails to download the bundle because of this setting,
  it retries the bundle download on the next phonehome until it successfully
  downloads the bundle.
* A value of "0" means there is no limit to the number of deployment clients
  that can simultaneously download.
* Default: 0

reloadCheckInterval = <integer>
* The interval, in seconds, between reload checks, where a deployment server
  determines if it must run a reload to sync its configurations.
* This setting only applies in the case where 'syncMode' has
  a value of "sharedDir".
* Default: 60

targetRepositoryLocation = <path>
* The location on the deployment client where the deployment server
  should install the apps.
* If this value is unset, or set to empty, the repositoryLocation path is used.
* Can be overridden at the [serverClass:<name>] level.
* Useful only with complex (for example, tiered) deployment strategies.
* Default: $SPLUNK_HOME/etc/apps, the live
  configuration directory for a Splunk Enterprise instance.

tmpFolder = <path>
* Working folder used by deployment server.
* Default: $SPLUNK_HOME/var/run/tmp

continueMatching = <boolean>
* Controls how configuration is layered across classes and server-specific
  settings.
* If true, configuration lookups continue matching server classes, beyond
  the first match.
* If false, only the first match is used.
* Matching is done in the order in which server classes are defined.
* A serverClass can override this property and stop the matching.
* Can be overridden at the serverClass level.
* Default: true

endpoint = <URL template string>
* The endpoint from which content a deployment client can download content.
  The deployment client knows how to substitute values for variables in the
  URL.
* You can supply any custom URL here, as long as it uses the specified
  variables.
* Need not be specified unless you have a very specific need, for example:
  To acquire deployment application files from a third-party Web server, for
  extremely large environments.
* Can be overridden at the serverClass level.
* Default: $deploymentServerUri$/services/streams/deployment?name=$tenantName$:$serverClassName$:$appName$

filterType = whitelist | blacklist
* The whitelist setting indicates a filtering strategy that pulls in a
  subset:
    * Items are considered to not match the stanza by default.
    * Items that match any whitelist entry, and do not match any blacklist
      entry, are considered to match the stanza.
    * Items that match any blacklist entry are not considered to match the
      stanza, regardless of whitelist.
* The blacklist setting indicates a filtering strategy that rules out a subset:
    * Items are considered to match the stanza by default.
    * Items that match any blacklist entry, and do not match any whitelist
      entry, are considered to not match the stanza.
    * Items that match any whitelist entry are considered to match the stanza.
* More briefly:
    * whitelist: default no-match
    * blacklist: default match
* Can be overridden at the serverClass level, and the serverClass:app level.
* Default: whitelist

whitelist.<n> = <clientName> | <IP address> | <hostname> | <instanceId>
blacklist.<n> = <clientName> | <IP address> | <hostname> | <instanceId>
* 'n' is an unsigned integer. The sequence may start at any value and may be
  non-consecutive.
* The value of this attribute is matched against several things in order:
    * Any clientName specified by the client in its deploymentclient.conf file
    * The IP address of the connected client
    * The hostname of the connected client, as provided by reverse DNS lookup
    * The hostname of the client, as provided by the client
    * For Splunk Enterprise version > 6.4, the instanceId of the client. This is
      a GUID string, for example: 'ffe9fe01-a4fb-425e-9f63-56cc274d7f8b'.
* All of these can be used with wildcards.  The asterisk character (*) matches
  any sequence of characters. For example:
    * Match a network range: 10.1.1.*
    * Match a domain: *.splunk.com
* Can be overridden at the serverClass level, and the serverClass:app level.
* There are no whitelist or blacklist entries by default.
* These patterns are PCRE regular expressions, with the following aids for
  easier entry:
    * You can specify '.' to mean '\.'
    * You can specify '*' to mean '.*'
* Matches are always case-insensitive; you do not need to specify the '(?i)' prefix.

# Note: Overriding one type of filter (whitelist/blacklist) causes the other to
# be overridden (and hence not inherited from parent) too.

# Example with filterType=whitelist:
#     whitelist.0=*.splunk.com
#     blacklist.0=printer.splunk.com
#     blacklist.1=scanner.splunk.com
# This causes all hosts in splunk.com, except 'printer' and 'scanner', to
# match this server class.

# Example with filterType=blacklist:
#     blacklist.0=*
#     whitelist.0=*.web.splunk.com
#     whitelist.1=*.linux.splunk.com
# This causes only the 'web' and 'linux' hosts to match the server class.
# No other hosts match.

# You can also use deployment client machine types (hardware type of host
# machines) to match deployment clients.
# This filter is used only if match of a client could not be decided using
# the whitelist/blacklist filters. The value of each machine type is
# designated by the hardware platform itself; a few common ones are:
#   linux-x86_64, windows-intel, linux-i686, freebsd-i386,
    darwin-i386, sunos-sun4u.
# The method for finding it varies by platform; once a deployment client is
# connected to the deployment server, however, you can determine the value of a
# deployment client's machine type with this Splunk CLI command on the
# deployment server:
#       <code>./splunk list deploy-clients</code>
# The <code>utsname</code> values in the output are the respective deployment
# clients' machine types.

whitelist.from_pathname = <pathname>
blacklist.from_pathname = <pathname>
* As as alternative to a series of (whitelist|blacklist).<n>, the <clientName>,
  <IP address>, and <hostname> list can be imported from <pathname> that is
  either a plain text file or a comma-separated values (CSV) file.
* May be used in conjunction with (whitelist|blacklist).select_field,
  (whitelist|blacklist).where_field, and (whitelist|blacklist).where_equals.
* If used by itself, then <pathname> specifies a plain text file where one
  <clientName>, <IP address>, or <hostname> is given per line.
* If used in conjunction with select_field, where_field, and where_equals, then
  <pathname> specifies a CSV file.
* The <pathname> is relative to $SPLUNK_HOME.
* May also be used in conjunction with (whitelist|blacklist).<n> to specify
  additional values, but there is no direct relation between them.
* At most one from_pathname may be given per stanza.

whitelist.select_field = <field name> | <positive integer>
blacklist.select_field = <field name> | <positive integer>
* Specifies which field of the CSV file contains the <clientName>, <IP address>,
  or <hostname> either by field name or number.
* If <field name> is given, then the first line of the CSV file MUST be a
  header line containing the name(s) of all the field(s) and the <field name>
  must specify which field contains the value(s) to be used. Note that field
  names are case-sensitive.
* If <positive integer> is given, then it specifies the column number (starting
  at 1) of the field that contains the value(s) to be used. In this case, the
  first line of the CSV file MUST NOT be a header line.
* MUST be used in conjunction with (whitelist|blacklist).from_pathname.
* May be used in conjunction with (whitelist|blacklist).where_field and
  (whitelist|blacklist).where_equals.
* At most one select_field may be given per stanza.

whitelist.where_field = <field name> | <positive integer>
blacklist.where_field = <field name> | <positive integer>
* Specifies that only a subset of values are to be selected from
  (whitelist|blacklist).select_field.
* Specifies which field of the CSV file contains values to be compared against
  for equality with the (whitelist|blacklist).where_equals values.
* Like (whitelist|blacklist).select_field, the field may be specified by either
  name or number.  However, select_field and where_field MUST be specified the
  same way, either BOTH by name or BOTH by number.
* MUST be used in conjunction with (whitelist|blacklist).select_field and
  (whitelist|blacklist).where_equals.
* At most one where_field may be given per stanza.

whitelist.where_equals = <comma-separated list>
blacklist.where_equals = <comma-separated list>
* Specifies the value(s) that the value of (whitelist|blacklist).where_field
  must equal in order to be selected via (whitelist|blacklist).select_field.
* If more than one value is specified (separated by commas), then the value
  of (whitelist|blacklist).where_field may equal ANY ONE of the values.
* Each value is a PCRE regular expression with the following aids for easier
  entry:
    * You can specify '.' to mean '\.'
    * You can specify '*' to mean '.*'
* Matches are always case-insensitive; you do not need to specify the '(?i)'
  prefix.
* MUST be used in conjunction with (whitelist|blacklist).select_field and
  (whitelist|blacklist).where_field.
* At most one where_equals may be given per stanza.

machineTypesFilter = <comma-separated list>
* Optional.
* Boolean OR logic is employed: a match against any element in the list
  constitutes a match.
* This filter is used in boolean AND logic with whitelist/blacklist filters.
  Only clients which match the whitelist/blacklist AND which match this
  machineTypesFilter are included.
  * In other words, the match is an intersection of the matches for the
    whitelist/blacklist and the matches for MachineTypesFilter.
* This filter can be overridden at the serverClass and serverClass:app
  levels.
* These patterns are PCRE regular expressions, with the following aids for
  easier entry:
    * You can specify '.' to mean '\.'
    * You can specify '*' to mean '.*'
* Matches are always case-insensitive; you do not need to specify the '(?i)'
  prefix.
* Unset by default.

packageTypesFilter = <comma-separated list>
* Optional.
* Boolean OR logic is employed: a match against any element in the list
  constitutes a match.
* This filter is used in boolean AND logic with 'whitelist'/'blacklist'
  filters. Only clients which match the 'whitelist'/'blacklist' AND which
  match this packageTypesFilter are included.
  * In other words, the match is an intersection of the matches for the
    'whitelist'/'blacklist' and the matches for 'packageTypesFilter'.
* You can override this filter at the serverClass and serverClass:app
  levels.
* These patterns are PCRE(Perl Compatible Regular Expressions) regular
  expressions, with the following aids for easier entry:
    * You can specify '.' to mean '\.'
    * You can specify '*' to mean '.*'
* Matches are always case-insensitive; you do not need to specify the '(?i)'
  prefix.
* Default: Not set

updaterRunningFilter = <boolean>
* This filter is used in boolean AND logic with 'whitelist'/'blacklist' filters.
  Only clients which match the 'whitelist'/'blacklist' AND which match this
  updaterRunningFilter are included.
  * In other words, the match is an intersection of the matches for the
    'whitelist'/'blacklist' and the matches for 'updaterRunningFilter'.
* The self-updater is a process that must be installed separately to
  upgrade the deployment client. This setting is applicable only if the
  self-updater is installed.
* A value of "true" means only the clients with self-updater running
  on the host are included.
* You can override this filter at the serverClass level and the
  serverClass:app level.
* Unset by default.

restartSplunkWeb = <boolean>
* If true, restarts SplunkWeb on the client when a member app or a directly
  configured app is updated.
* Can be overridden at the serverClass level and the serverClass:app level.
* Default: false

restartSplunkd = <boolean>
* If true, restarts splunkd on the client when a member app or a directly
  configured app is updated.
* Can be overridden at the serverClass level and the serverClass:app level.
* Default: false

issueReload = <boolean>
* If true, triggers a reload of internal processors at the client when a
  member app or a directly configured app is updated.
* If you don't want to immediately start using an app that is pushed to a
  client, you should set this to false.
* Default: false

restartIfNeeded = <boolean>
* This is only valid on forwarders that are newer than 6.4.
* If true and issueReload is also true, then when an updated app is deployed
  to the client, that client tries to reload that app. If it fails, it restarts.
* Default: false

stateOnClient = enabled | disabled | noop
* If set to "enabled", sets the application state to enabled on the client,
  regardless of state on the deployment server.
* If set to "disabled", set the application state to disabled on the client,
  regardless of state on the deployment server.
* If set to "noop", the state on the client is the same as on the
  deployment server.
* Can be overridden at the serverClass level and the serverClass:app level.
* Default: enabled

precompressBundles = <boolean>
* Controls whether the deployment server generates both .bundle and
  .bundle.gz files. The pre-compressed files offer improved performance as
  the deployment server is not required to compress the bundles on the fly
  for each client that it has to send the bundle to. However, this setting
  is only beneficial if there is no SSL compression in use and the client has
  support for HTTP compression.

* Deployment Server / server.conf
*   allowSslCompression = false
*   useHTTPServerCompression = true
*
* Deployment Client / server.conf
*   useHTTPClientCompression = true
*
* This option is inherited and available up to the serverclass level (not
  app). Apps belonging to server classes that required precompression are
  compressed, even if they belong to a server class which does not
  require precompression.
* Default: true

cronSchedule = <string>
* The cron schedule that is used to reload this serverclass in following format:
* "<minute> <hour> <day of month> <month> <day of week>"
* Special characters are acceptable. You can use combinations of "*",
  ",", "/", and "-" to specify wildcards, separate values, ranges
  of values, and step values. For example:
    * Run reload at midnight from Monday to Friday: 0 0 * * 1-5
    * Run reload at midnight on Dec 1: 0 0 1 12 *
    * Run reload every hour at hh:03, hh:23, hh:43: 03,23,43 * * * *
* This option is available only at the serverclass level.
* You must set 'cronSchedule' in order to run reload jobs automatically
  rather than manually.
* No default.

SECOND LEVEL: serverClass ###########


[serverClass:<serverClassName>]
* This stanza defines a server class. A server class is a collection of
  applications; an application may belong to multiple server classes.
* serverClassName is a unique name that is assigned to this server class.
* A server class can override all inheritable properties in the [global] stanza.
* A server class name may only contain: letters, numbers, spaces, underscores,
  dashes, dots, tildes, and the '@' symbol.  It is case-sensitive.

# NOTE:
# The following settings are all described in detail in the
# previous [global] section. They can be used in the serverClass stanza to
# override the global setting.
continueMatching = <boolean>
endpoint = <URL template string>
excludeFromUpdate = <comma-separated list>
filterType = whitelist | blacklist
whitelist.<n> = <clientName> | <IP address> | <hostname>
blacklist.<n> = <clientName> | <IP address> | <hostname>
machineTypesFilter = <comma-separated list>
packageTypesFilter = <comma-separated list>
updaterRunningFilter = <boolean>
restartSplunkWeb = <boolean>
restartSplunkd = <boolean>
issueReload = <boolean>
restartIfNeeded = <boolean>
stateOnClient = enabled | disabled | noop
repositoryLocation = <path>
targetRepositoryLocation = <path>
cronSchedule = <string>

THIRD LEVEL: app ###########


[serverClass:<server class name>:app:<app name>]
* This stanza maps an application (which must already exist in
  repositoryLocation) to the specified server class.
* server class name is the server class to which this content should be
  added.
* app name can be '*' or the name of an app:
    * The value '*' refers to all content in the repositoryLocation, adding
      it to this serverClass. '*' stanza cannot be mixed with named stanzas
      for a given server class.
    * The name of an app explicitly adds the app to a server class.
      Typically apps are named by the folders that contain them.
    * An application name, if it is not the special '*' sign explained
      directly above, may only contain: letters, numbers, spaces, underscores,
      dashes, dots, tildes, and the '@' symbol.  It is case-sensitive.

appFile=<file name>
* In cases where the app name is different from the file or directory name,
  you can use this parameter to specify the file name. Supported formats
  are: directories, .tar files, and .tgz files.

# NOTE: The following settings may override settings at the global or
  serverClass levels.
issueReload = <boolean>
restartIfNeeded = <boolean>
excludeFromUpdate = <comma-separated list>
filterType = whitelist | blacklist
whitelist.<n> = <clientName> | <IP address> | <hostname>
blacklist.<n> = <clientName> | <IP address> | <hostname>
machineTypesFilter = <comma-separated list>
packageTypesFilter = <comma-separated list>
updaterRunningFilter = <boolean>
stateOnClient = enabled | disabled | noop

serverclass.conf.example

#   Version 9.4.0
#
# Example 1
# Matches all clients and includes all apps in the server class

[global]
whitelist.0=*
# whitelist matches all clients.
[serverClass:AllApps]
[serverClass:AllApps:app:*]
# a server class that encapsulates all apps in the repositoryLocation


# Example 2
# Assign server classes based on dns names.

[global]

[serverClass:AppsForOps]
whitelist.0=*.ops.yourcompany.com
[serverClass:AppsForOps:app:unix]
[serverClass:AppsForOps:app:SplunkLightForwarder]

[serverClass:AppsForDesktops]
filterType=blacklist
# exclude everybody except the Windows desktop machines.
blacklist.0=*
whitelist.0=*.desktops.yourcompany.com
[serverClass:AppsForDesktops:app:SplunkDesktop]


# Example 3
# Deploy server class based on machine types

[global]

[serverClass:AppsByMachineType]
# Ensure this server class is matched by all clients. It is IMPORTANT to
# have a general filter here, and a more specific filter at the app level.
# An app is matched _only_ if the server class it is contained in was
# successfully matched!
whitelist.0=*

[serverClass:AppsByMachineType:app:SplunkDesktop]
# Deploy this app only to Windows boxes.
whitelist.0=*
machineTypesFilter=windows-*

[serverClass:AppsByMachineType:app:unix]
# Deploy this app only to unix boxes - 32/64 bit.
whitelist.0=*
machineTypesFilter=linux-i686, linux-x86_64

# Example 4
# Specify app update exclusion list.

[global]

# The local/ subdirectory within every app will not be touched upon update.
excludeFromUpdate=$app_root$/local

[serverClass:MyApps]

[serverClass:MyApps:app:SpecialCaseApp]
# For the SpecialCaseApp, both the local/ and lookups/ subdirectories will
# not be touched upon update.
excludeFromUpdate=$app_root$/local,$app_root$/lookups

# Example 5
# Control client reloads/restarts

[global]
restartSplunkd=false
restartSplunkWeb=true

# For this serverclass, we attempt to only reload the configuration files
# within the app, if we fail to reload ie if there's a conf in the app that
# requires a restart, the admin must restart the instance themselves
[serverClass:ReloadOnly]
issueReload=true

# This is an example of a best effort reloadable serverClass. ie we try to
# reload the app, but if there are files that require a restart, only then 
# do we restart
[serverClass:tryReloadThenRestart]
issueReload=true
restartIfNeeded=true

# Example 6a
# Use (allow list|deny list) text file import.
[serverClass:MyApps]
whitelist.from_pathname = etc/system/local/clients.txt

# Example 6b
# Use (allow list|deny list) CSV file import to read all values from the Client
# field (ignoring all other fields).
[serverClass:MyApps]
whitelist.select_field = Client
whitelist.from_pathname = etc/system/local/clients.csv

# Example 6c
# Use (allow list|deny list) CSV file import to read some values from the Client
# field (ignoring all other fields) where ServerType is one of T1, T2, or
# starts with dc.
[serverClass:MyApps]
whitelist.select_field = Client
whitelist.from_pathname = etc/system/local/server_list.csv
whitelist.where_field = ServerType
whitelist.where_equals = T1, T2, dc*

# Example 6d
# Use (allow list|deny list) CSV file import to read some values from field 2
# (ignoring all other fields) where field 1 is one of T1, T2, or starts with
# dc.
[serverClass:MyApps]
whitelist.select_field = 2
whitelist.from_pathname = etc/system/local/server_list.csv
whitelist.where_field = 1
whitelist.where_equals = T1, T2, dc*

Related answers from Splunk Community

serverclass.conf

serverclass.conf.spec

FIRST LEVEL: global ###########

SECOND LEVEL: serverClass ###########

THIRD LEVEL: app ###########

serverclass.conf.example

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serverclass.conf

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