Hey!
So, I have this 12 node cluster with elastic 7.17.5 running. During the upgrade process to this version the cluster had issues finding the master node:
master not discovered or elected yet, an election requires at least 6
nodes with ids from [...], have discovered [...] which is a quorum;
discovery will continue using [...] from hosts providers and [...]
from last-known cluster state; node term 659, last-accepted version 602734 in term 659
Every 10 seconds, this message was logged for ~35min before it found a new master.
I would not be posting here, if it says the quorum is NOT met - which would be obvious. However, in this case the quorum IS met and it still does not elect a new master.
So my question is, what can be the issue, that the election does not elect a master even though the quorum is met?
Thanks in advance