Splunk Enterprise Security

oplogSize default value control

stanwin
Contributor

I am working with ES Splunk & want to increase the oplogSize from 1Gig to 2Gig..

From KVStore hammer .conf talk:

1GB even works fine for a while with
premium apps — until it doesn't

https://docs.splunk.com/Documentation/Splunk/7.2.3/Admin/Serverconf

the default Serverconf file does not seem to have oplogSize setting at all. So how is the 1Gig limit enforced?

oplogSize = <integer>
* The size of the replication operation log, in MB, for environments
  with search head clustering or search head pooling.
  In a standalone environment, 20% of this size is used.
* After the KV Store has created the oplog for the first time, changing this
  setting does NOT affect the size of the oplog. A full backup and restart
  of the KV Store is required.
* Do not change this setting without first consulting with Splunk Support.
* Default: 1000MB (1GB)
0 Karma

starcher
SplunkTrust
SplunkTrust

The default is active regardless. You should contact support on the correct steps on increasing opLog in a search head cluster. There is a very very specific order you have to do things to not wipe out your kvstore contents and it can be done without a backup and restore. I would recommend 10GB in an active ES environment.

Get Updates on the Splunk Community!

Index This | I am a number, but when you add ‘G’ to me, I go away. What number am I?

March 2024 Edition Hayyy Splunk Education Enthusiasts and the Eternally Curious!  We’re back with another ...

What’s New in Splunk App for PCI Compliance 5.3.1?

The Splunk App for PCI Compliance allows customers to extend the power of their existing Splunk solution with ...

Extending Observability Content to Splunk Cloud

Register to join us !   In this Extending Observability Content to Splunk Cloud Tech Talk, you'll see how to ...