Fronttail - Reducing Info Log Messages Possible?

Since there is no 4.3.0, do you mean 3.4.0 or 4.0.0 snapshot?

I assume you are referring to events.log? If so then that is the log for the EventBus. You can’t pick and choose which bindings events are logged on the bus. You can either show all ItemChangedEvents (for example) or no ItemChangedEvents.

So, if you can monitor events using Grafana, you can turn off events.log entirely. If you don’t need to see those events, don’t bother logging them. You can set the level for the openhab.event loggers in userdata/etc/log4j2.xml to ERROR (or using the karaf console).

If you need events.log, then you can and should use the filters built into Frontail to filter them so you only see what’s relevant to you at a time. It uses regular expressions so see How to watch and look through logging for how to include or exclude specific log statements on the fly.

As a last resort you can filter specific logs in the log4j2.xml file using filters on the log appenders. See Log4j – Log4j Filters - Apache Log4j 2. However, I’m of the opinion that either events.log is useful in its entirety or it isn’t. So it’s best to include all the events and use filters on Frontail to cut out those lines you don’t care about on the fly, or events.log should just be disabled in its entirety.