Replica Shards Enabled On Single Instance-Worth Changing?

[jslawrenc]

I'm new to Nagios LMS and found that the Nagios log server we're using at my work had Replica shards enabled even though we only have a single instance running. The steps to disable Replica shards looks trivial, but we're probably going to add a 2nd instance in the next 6 months or so. Is there any serious downside to leaving the Replica shards enabled while running a single instance? Has anyone ever corrupted the indices & lost log data by disabling the shard replicas?

[scottwilkerson]

There is no benefit to changing it, it simply won't replicate which it cannot until you have a second instance.

[jslawrenc]

Thanks Scott. Nagios offers instructions to disable the replica shards on a single instance-but not much detail on why it matters. I guess just so admins don't have to see that yellow warning in the cluster health status. I can live with that, LOL!!

[scottwilkerson]

Thanks Scott. Nagios offers instructions to disable the replica shards on a single instance-but not much detail on why it matters. I guess just so admins don't have to see that yellow warning in the cluster health status. I can live with that, LOL!!

That is literally the only difference.

then when you add another instance you have to remember to turn on replication