splunk-launch.conf

The following are the spec and example files for splunk-launch.conf.

splunk-launch.conf.spec

   Version 8.0.2

 splunk-launch.conf contains values used at startup time, by the Splunk
 command and by Windows services.


 Note: this conf file is different from most splunk conf files.  There is
 only one in the whole system, located at
 $SPLUNK_HOME/etc/splunk-launch.conf; further, there are no stanzas,
 explicit or implicit.  Finally, any splunk-launch.conf files in
 etc/apps/... or etc/users/... will be ignored.


 Lines beginning with a  are comments and are ignored.

*******
 Environment variables

 Primarily, this file simply sets environment variables to be used by
 Splunk programs.

 These environment variables are the same type of system environment
 variables that can be set, on unix, using:
   bourne shells:
       $ export ENV_VAR=value
   c-shells:
       % setenv ENV_VAR value

 or at a windows command prompt:
   C:\> SET ENV_VAR=value
*******

<environment_variable>=<value>

* Any desired environment variable can be set to any value.
  Whitespace is trimmed from around both the key and value.
* Environment variables set here will be available to all splunk processes,
  barring operating system limitations.


*******
 Specific Splunk environment settings

 These settings are primarily treated as environment variables, though some
 have some additional logic (defaulting).

 There is no need to explicitly set any of these values in typical
 environments.
*******

SPLUNK_HOME=<pathname>
* The fully qualified path to the Splunk install directory.
* The comment in the auto-generated splunk-launch.conf is informational, not
  a live setting, and does not need to be uncommented.
* If unset, Splunk automatically determines the location of SPLUNK_HOME
  based on the location of the splunk CLI executable.
    * Specifically, the parent of the directory containing splunk or splunk.exe
* Must be set if Common Criteria mode is enabled.
* NOTE: Splunk plans to submit Splunk Enterprise for Common Criteria
  evaluation. Splunk does not support using the product in Common
  Criteria mode until it has been certified by NIAP. See the "Securing
  Splunk Enterprise" manual for information on the status of Common
  Criteria certification.
* Defaults to unset.

SPLUNK_DB=<pathname>
* The comment in the auto-generated splunk-launch.conf is informational, not
  a live setting, and does not need to be uncommented.
* Fully qualified path to the directory containing the splunk index
  directories.
* Primarily used by paths expressed in indexes.conf
* The comment in the autogenerated splunk-launch.conf is informational, not
  a live setting, and does not need to be uncommented.
* If unset, the path becomes $SPLUNK_HOME/var/lib/splunk (unix) or
     %SPLUNK_HOME%\var\lib\splunk (windows>)
* Default: Not set.

SPLUNK_BINDIP=<ip address>
* Specifies an interface that splunkd and splunkweb should bind to, as
  opposed to binding to the default for the local operating system.
* If unset, Splunk makes no specific request to the operating system when
  binding to ports/opening a listening socket.  This means it effectively
  binds to '*', meaning an unspecified bind. Operating system behavior and
  configuration controls the exact result in this case.
* NOTE: When using this setting you must update mgmtHostPort in web.conf to
  match. Otherwise, the command line and splunkweb cannot reach splunkd.
* For splunkd, this sets both the management port and the ports that receive
  from forwarders.
* This setting is useful for a host with multiple IP addresses, either to enable
  access or restrict access. But firewalling is typically a superior
  method of restriction.
* Overrides the Splunkweb-specific web.conf/[settings]/server.socket_host
  setting; use the latter when SplunkWeb behavior is the focus.
* Default: Not set.

SPLUNK_IGNORE_SELINUX=true
* If set to any value, Splunk launches despite the presence of SELinux.
* If unset (not present), Splunk on Linux aborts startup if it detects
  it is running in an SELinux environment.  This is because, in
  shipping/distribution-provided SELinux environments, Splunk is not
  permitted to work, and Splunk is not be able to identify clearly why.
* This setting is useful in environments where you have configured SELinux
  to enable Splunk to work.
* Default: Not set.

SPLUNK_OS_USER = <string> | <nonnegative integer>
* The OS user whose privileges Splunk adopts when running, if this
  parameter is set.
* Example: SPLUNK_OS_USER=fnietzsche. Splunkd starts with a root login.
  Immediately upon starting, splunkd abandons root's privileges,
  and acquires fnietzsche's privileges. fnietzsche owns any files splunkd
  creates (index data, logs, etc.) So when fnietzsche starts splunkd the
  next time, the files are readable.
* When 'splunk enable boot-start -user <U>' is invoked, SPLUNK_OS_USER
  is set to <U> as a side effect.
* On UNIX, username or apposite numeric UID are both acceptable;
  on Windows, only a username.

*******
 Service/server names.

 These settings are considered internal, and altering them is not
 supported.

 On Windows, they influence the expected name of the service;
 on UNIX they influence the reported name of the appropriate
 server or daemon process.

 On Linux distributions that run systemd, this is the name of the
 unit file for the service that Splunk Enterprise runs as.
 For example, if you set 'SPLUNK_SERVER_NAME' to 'splunk'
 then the corresponding unit file should be named 'splunk.service'.

 If you want to run multiple instances of Splunk as *services* on
 Windows, you must change the names for instances after the first.
 This is because the first instance takes up the service names
 'Splunkd' and 'Splunkweb', and you may not have multiple services with
 same name.
*******

SPLUNK_SERVER_NAME=<name>
* Names the splunkd server/service.
* Defaults to splunkd (UNIX), or Splunkd (Windows).

SPLUNK_WEB_NAME=<name>
* No longer used.

*******
 File system check enable/disable

 CAUTION!
 USE OF THIS ADVANCED SETTING IS NOT SUPPORTED. IRREVOCABLE DATA LOSS
 CAN OCCUR. YOU USE THE SETTING SOLELY AT YOUR OWN RISK.
 CAUTION!

 When the Splunk software encounters a file system that it does not recognize,
 it runs a utility called 'locktest' to confirm that it can write to the
 file system correctly. If 'locktest' fails for any reason, splunkd
 cannot start.

 The following setting lets you temporarily bypass the 'locktest'
 check (for example, when a software vendor introduces a new default
 file system on a popular operating system). When it is active, splunkd
 starts regardless of its ability to interact with the file system.

 Use this setting if and only if:

 * You are a skilled Splunk administrator and know what you are doing.
 * You use Splunk software in a development environment.
 * You want to recover from a situation where the default
   filesystem has changed outside your control, such as
   during an operating system upgrade.
 * You want to recover from a situation where a Splunk bug
   has invalidated a previously functional file system after an upgrade.
 * You want to evaluate the performance of a file system for which
   Splunk has not yet offered support.
 * You have been given explicit instruction from Splunk Support to use
   the setting to solve a problem where the Splunk software does not start
   because of a failed file system check.
 * You understand and accept all the risks of using the setting,
   up to and including LOSING ALL YOUR DATA WITH NO CHANCE OF RECOVERY
*   while the setting is active.

 If none of these scenarios applies to you, then DO NOT USE THE SETTING.

 CAUTION!
 USE OF THIS ADVANCED SETTING IS NOT SUPPORTED. IRREVOCABLE DATA LOSS
 CAN OCCUR. YOU USE THE SETTING SOLELY AT YOUR OWN RISK.
 CAUTION!
*******

OPTIMISTIC_ABOUT_FILE_LOCKING = [0|1]
* Whether or not Splunk software skips the file system lock check on
  unrecognized file systems.
* CAUTION: USE THIS SETTING AT YOUR OWN RISK. YOU CAN LOSE ANY DATA
  THAT HAS BEEN INDEXED WHILE THE SETTING IS ACTIVE.
* When set to 1, Splunk software skips the file system check, and
  splunkd starts whether or not it can recognize the file system.
* Defaults to 0 (Run the file system check.)

splunk-launch.conf.example

No example