Nagios Support Forum

New (2 day) install of Nagios XI. Had to reboot the server, and now the bandwidth checks/graphs do not work on my snmp interfaces (Cisco switches) after reboot and go to an unknown status for 15-20 minutes after reboot. After the time frame they will clear the alert/check status, but the actual bandwidth graph doesnt actually graph anything new, it shows flat utilization of 0 across the graphs. Anyone have any ideas?

This is running on Ubuntu Server 22 LTS.

Is the message it gives me following message:

/var/lib/mrtg/10.37.42.230_72.rrd does not exist.

System profile attached.

Diving more into it, somehow something changed and the nagios user lost the ability to write the mrtg graphs. Once I gave it permissions, all instantly started working again. It actually appeared it stopped writing to the graphs hours before the reboot occurred, but wasnt noticed until the reboot. All is working now.

is your npcd, crond working?

looks like it was related to this bug, after another reboot the permissions were removed, diving more into it, found this particular bug, removed and rebooted and so far so good.


viewtopic.php?p=345935

pugs1721,

Glad you got everything working for now. It does seem like you're experiencing the same issue as the one in the topic you linked to.

If you continue to have any issues after the next release of XI, please post back here and we'll dig into it more.

Best Regards,

Cory Norell