This looks similar to https://bugs.launchpad.net/ubuntu/+source /monitoring-plugins/+bug/1827159.
However, installing nagios-plugins in a fresh Xenial LXC container does not appear sufficient to reproduce the bug: 1. There is no /sys/kernel/debug/tracing present on the system. Installing perf-tools-unstable caused the directory to be created. 2. There is not a nagios user on the system. I created this manually, but wonder if there is some third component that should be installed, that would create this? 3. The directory in question is owned by 'nobody': root@triage-xenial:~# ls -l /sys/kernel/debug/tracing ls: cannot access '/sys/kernel/debug/tracing': Permission denied root@triage-xenial:~# ls -l /sys/kernel (...) drwx------ 36 nobody nogroup 0 Jul 10 23:10 debug (...) It would be quite helpful to have a step-by-step test case that can be invoked in a Xenial lxc container. Has anyone checked that this same issue affects bionic or newer, or is Xenial-specific? ** Changed in: nagios-plugins (Ubuntu) Status: Triaged => Incomplete -- 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