I have a HAPROXY and behind 3 servers with : graylog, mongodb, ES
srv1 is the graylog master
Srv1 was busy, a lot of unprocessed message.
So, I reboot srv3, after, I reboot srv2 to add RAM and CPU because I’m in dev mode.
All is OK, nodes comes back.
But when I upgrade srv1, graylog says that there is no master. Normal.
After he comes back, I add some indexer failures with this error : primary shard is not active
What’s wrong ?
It’s because graylog had a lot of unprocessed messages or because ES config is not good ar something else ?