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

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https://bugs.launchpad.net/bugs/1516451

Title:
  check_disk plugin broken after upgrade to 15.10

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