topic Re: Totally Disable Search head Clustering in Splunk Search

Totally Disable Search head Clustering

pgadhari — Mon, 22 Jul 2019 05:29:22 GMT

I have 2 nodes in my Search Head cluster and want to disable the Search head Clustering fully. I have a deployer also, which I used during configuration of Search Head Cluster.

In the documentations, I can see only "Remove cluster member" but there is no documentation on how to disable and remove Search Head Clustering fully. Please help on how to disable and remove Search head cluster ?

Re: Totally Disable Search head Clustering

jawaharas — Mon, 22 Jul 2019 05:48:14 GMT

Splunk recommends at least 3 instances to create search head cluster. Run below commands in each search-head members to disable search-head clustering.

Remove the member:
splunk remove shcluster-member
Disable the member:
splunk disable shcluster-config
Clean the KVStore:
splunk clean kvstore --cluster

Reference:
https://docs.splunk.com/Documentation/Splunk/6.5.1/DistSearch/Removeaclustermember

Re: Totally Disable Search head Clustering

pgadhari — Mon, 22 Jul 2019 06:06:50 GMT

But I think this will only disable one of the member of the cluster. Whether it will totally disable Search head clustering ? Also, whether I have to do any steps on Deployer to disable any services on it ? Please advise ?

Re: Totally Disable Search head Clustering

jawaharas — Mon, 22 Jul 2019 06:17:34 GMT

I have updated my answer with steps. Kindly accept the answer if it's helpful.

Re: Totally Disable Search head Clustering

pgadhari — Mon, 22 Jul 2019 12:09:26 GMT

sure I will try this out and revert back. Thanks.

Re: Totally Disable Search head Clustering

pgadhari — Tue, 23 Jul 2019 07:28:27 GMT

I have 2 nodes in my search head cluster, do I need to do above steps on both the nodes one by one ?

Re: Totally Disable Search head Clustering

jawaharas — Tue, 23 Jul 2019 07:43:21 GMT

Yes. Execute these commands on each search-head members (one by one).

Re: Totally Disable Search head Clustering

pgadhari — Tue, 23 Jul 2019 07:46:12 GMT

ok got it. Thanks. I will revert back.

Re: Totally Disable Search head Clustering

pgadhari — Wed, 24 Jul 2019 05:25:32 GMT

I have tried that command but I am getting issues, when I run disable member command on the captain, the command is getting stuck and doing nothing ? In my case I have 2 nodes in a cluster the member node was removed successfully.

But running that command on captain is not working, as I think it is trying to find the another captain to remove that member. What can be done in this case ?

Should I comment "clustering" stanza on Captain and take a restart ? Please advise ?

Re: Totally Disable Search head Clustering

jawaharas — Wed, 24 Jul 2019 06:34:27 GMT

Update 'disabled' key to 1 in 'shclustering' stanza of your 'server.conf' file and restart the Splunk instance.

[shclustering]
disabled = 1

Re: Totally Disable Search head Clustering

chinmoya — Wed, 24 Jul 2019 07:00:55 GMT

You would have a configuration in your servers.conf.
Ideally, this should be in your system/local. But can differ depending on your configuration.

The servers.conf will have a stanza [shclustering].

Remove all configuration under this stanza on all your SH.
Do a restart.
Your SH clustering will be removed.