I want to upgrade an indexer cluster and a search head cluster from 6.3.3 to 6.3.4.
From Splunk docs, I could understand that I can upgrade an indexer cluster by a rolling upgrade.
But I cannot find information about a search head cluster. Splunk docs only describes upgrading a search head.
Can I upgrade a search head cluster by a rolling upgrade?
As per the same page
Note the following: All cluster members must be running the same version of Splunk Enterprise (down to the maintenance level).
So, the in place upgrade is not possible(I infer).