I am trying to figure out how to upgrade an old version of CE (3.10) to the recent version 5.x on a cluster of 3 nodes with repl-factor = 2
Going through the documentation, i was able to list the following steps.
Upgrade to 3.13 (due to cluster protocol changes) Upgrade to 4.3 (due to storage format changes) Upgrade to 188.8.131.52 (as a pre-requisite step before upgrading to 5.x) and finally, upgrade to 5.x
I would like to know if the above steps are enough or some might be skipped. Also, my understanding is that AS supports mix-versions cluster, and so the upgrade can go one node at a time (e.g. 5.x node can still work with 3.10 node)