Nagios Support Forum

I currently have a single instance Nagios Log Server but unless I keep the indexes pruned it has serious performance issues.

Currently there are 80 hosts but only like or so send a lot of logs to the system.

Would it work better to have a cluster rather than a single instance?

Depending on how powerful your server is, you may want to upgrade it, or alternatively, yes, adding nodes is an option.

To add on to @jmichaelson 's response, we strongly recommend having at least two instances in a cluster to ensure redundancy and avoid data loss.

To add on even more: ideally in different geographic locations.