strace confirms that check_disk on 12.04 doesn't check /sys/kernel/debug/tracing
Not having any luck tracking down a code change in the monitoring- plugins github repo. I wonder if this is a change in a dependent lib instead. Here's a workaround sudo chown root:root /usr/lib/nagios/plugins/check_disk sudo chmod u+s /usr/lib/nagios/plugins/check_disk sudo chmod o+x /usr/lib/nagios/plugins/check_disk -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1516451 Title: check_disk plugin broken after upgrade to 15.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nagios-plugins/+bug/1516451/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs