collectd in a jail | good idea?

[mistermanko]

Trying to get a collectd jail working for the use of having third-party plugins. I don't want them running on the host - they'd disappear after restart and I'm not sure how stable they are.

But I somehow can't get udp traffic under the specified port into the influxDB.
Is it possible, that the collectd host service is blocking the collectd inside the jail?

 

[sretalla]

Maybe an issue of devfs_ruleset for collectd to do its work?

 

[mistermanko]

Maybe an issue of devfs_ruleset for collectd to do its work?

Do you mean the ruleset of the jail? I checked with devfs rule -s 4 show and couldn't find anything about collectd.
The service is running inside the jail and the host service of collectd is unaffected by it - grafana shows it's graphs unharmed - but somehow the udp traffic from inside the collectd jail doesn't reaches the influxdb in the grafana jail.

I read here that increasing the udp buffer in the kernel is highly recommended via sysctl.conf. Anyone expierenced with that? Is that a setting that disappears after restart?

 

[sretalla]

Is that a setting that disappears after restart?

Not if you set it with a sysctl tunable...

Do you mean the ruleset of the jail?

Yes. Maybe setting to ruleset 2 would change something about how the jail is able to communicate with the NIC in /dev (I don't really know what's blocking it, so just guessing here)