topic Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"? in Splunk Enterprise

Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

fortes777 — Wed, 09 Mar 2022 19:44:00 GMT

I am on Splunk 8.2.4

While performing "Migrate the KV store after an upgrade to Splunk Enterprise 8.1 or higher in a clustered deployment" (see https://docs.splunk.com/Documentation/Splunk/8.2.4/Admin/MigrateKVstore )

splunk start-shcluster-migration kvstore -storageEngine wiredTiger -isDryRun true

I'm getting message "Admin handler 'shclustercaptainkvstoremigrate' not found."

Searh Head KV_Store is up and running. Splunk 8.2.4

I can't find any troubleshoot topic. Does anyone know how to fix this issue?

Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

gjanders — Mon, 14 Mar 2022 04:19:44 GMT

Search head cluster or standalone search head?

And did you setup the server.conf as per the docs pre-migration?

Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

fortes777 — Mon, 14 Mar 2022 14:27:13 GMT

Search Head cluster and i added the [kvstore] stanza in server.conf (as described) before executing the dry run.

Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

gjanders — Tue, 15 Mar 2022 05:25:18 GMT

There might be a log relating to the migration in $SPLUNK_HOME/var/log/splunk

However this is potentially support case territory now, and you may wish to log a case

Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

ammara — Wed, 16 Mar 2022 11:47:21 GMT

I seem to be having the same problem. Looks like there is something wrong with the command

Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

joe_mcmahon — Wed, 16 Mar 2022 17:41:59 GMT

I had this error appear too, but only because I skipped a step. The rolling restart of the clustered search heads was critical after making the following server.conf change:

[kvstore]
storageEngineMigration=true

Once the rolling restart of the search heads completes, then enter the command:

splunk start-shcluster-migration kvstore -storageEngine wiredTiger

The response should read "Starting KVStore Migration". Check the migration status via:

splunk show shcluster-kvmigration-status

Re: Why is there an error while performing "Migrate KV store to the WiredTiger storage engine"?

TheBravoSierra — Tue, 21 Jun 2022 14:19:17 GMT

I'm having the same issue...please advise. I have made appropriate changes to server.conf on shc nodes.