*** This bug is a duplicate of bug 1827159 ***
https://bugs.launchpad.net/bugs/1827159
Also applies to squashfs, added bugs as dup
** This bug has been marked a duplicate of bug 1827159
check_all_disks includes squashfs /snap/* which are 100%
** Tags added: server-next
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** Changed in: nagios-plugins (Ubuntu)
Assignee: (unassigned) => Bryce Harrington (bryce)
** Tags removed: server-next
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Title:
check_disk p
Meanwhile, I've verified the issue seems relevant for newer ubuntu's
too:
### Bionic
# /usr/lib/nagios/plugins/check_disk -w '20%' -c '10%' -e
DISK CRITICAL - /sys/kernel/debug/tracing is not accessible: Permission denied
### Eoan
# /usr/lib/nagios/plugins/check_disk -w '20%' -c '10%' -e
DISK CRI
Ramon, thank you for the detailed test case, I was able to run through
it exactly as you described, both as root user (see attached) and as
nagios (with sudo setup). I suspect I'm unable to reproduce the issue
you're seeing since under lxc the /sys/kernel/debug directory belongs to
the host and th
** Tags added: server-next
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Title:
check_disk plugin broken after upgrade to 15.10
To manage notifications about this bug go to:
https://bugs.la
The reason why this alert pops out is related to running sosreport on this
node. Nagios can not access it - which is good as this directory is only
accessible by root:
# ll /sys/kernel/debug/ | grep trac
drwx-- 8 root root 0 Jul 9 09:06 tracing/
To validate/replicate this behaviour, please o
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-
Currently experiencing this issue at customer site where there is a permission
issue as nagios user can't access this directory, this particular mount
point/directory is owned by root and the permission set on this is 700.
ubuntu@XXnagios-1:/snap/core/7270$ /usr/lib/nagios/plugins/check_disk
This is also affecting a confined xenial LXC environment, and was fixed
by adding "--exclude-type=tracefs" on the check_all_disks command
definition at /etc/nagios-plugins/config/disk.cfg
monitoring-plugins-basic should be updated with the above.
** Tags added: canonical-bootstack
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Since check_all_disks is internally defined in Nagios, you might well
see a "duplicate definition" error if you define your own
check_all_disks command. I'd recommend
define command{
command_name check_all_physical_disks
command_line /usr/lib/nagios/plugins/check_disk -w '$ARG1$' -c '$ARG2
Oops - please disregard comment #14 - it's specific to Icinga.
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Title:
check_disk plugin broken after upgrade to 15.10
To manage notifications a
This appears to be fixed upstream via
https://github.com/Icinga/icinga2/issues/4184
** Bug watch added: github.com/Icinga/icinga2/issues #4184
https://github.com/Icinga/icinga2/issues/4184
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These days /etc/mtab is a symlink to /proc/self/mounts, so you cannot
control what is exposed there.
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Title:
check_disk plugin broken after upgra
We normally netboot but we had a few machines that would not PXE, so we
installed 14.04 via medium. Afterwards, some of the medium-installed
machines were throwing this error in Nagios. Found this line in
/etc/mtab on the afflicted hosts:
tracefs /var/lib/ureadahead/debugfs/tracing tracefs rw,rela
Possibly related to #499773 which is about install adding spurious
entries to mtab.
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Title:
check_disk plugin broken after upgrade to 15.10
To m
Rather than excluding tmpfs, just exclude /run/lxcfs/controllers. This
is the check_all_disks command I'm now using in my /etc/nagios-
plugins/config/disk.cfg:
# 'check_all_disks' command definition
define command{
command_namecheck_all_disks
command_line/usr/lib/nagios/plu
The workaround is not really great when LXD/LXC is in use:
$ /usr/lib/nagios/plugins/check_disk -e --exclude-type=tracefs
DISK CRITICAL - /run/lxcfs/controllers is not accessible: Permission denied
$ /usr/lib/nagios/plugins/check_disk -e --exclude-type=tracefs
--exclude-type=cgroup
DISK CRITICAL
This is also broken in ubuntu 16.04, however the workaround mentioned works
/usr/lib/nagios/plugins/check_disk -e --exclude-type=tracefs
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Title:
Same probably for gvfs-fuse filesystems. Recommend
--exclude-type=tracefs --exclude-type=fuse.gvfsd-fuse
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Title:
check_disk plugin broken after
You can use the --exclude-type option to work this bug around:
/usr/lib/nagios/plugins/check_disk -e --exclude-type=tracefs
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Title:
check_disk p
Thank you for taking the time to report and investigate this bug and
helping to make Ubuntu better.
It sounds to me like check_disk should have a blacklist of filesystem
types to ignore. But explicitly specifying which mount points looks like
a suitable workaround.
I wonder if this affects monito
I suspect there isn't a code change here, but rather a difference in the
way Ubuntu is presenting its mount points. The plugin tries to
enumerate and check all mounts. A better use might be to add the actual
mount points to be monitored with -p
/usr/lib/nagios/plugins/check_disk -w '20%' -c '10%
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/chec
Also note that while 15.10 does change the permissions on
/sys/kernel/debug/tracing (from drwxr-xr-x in 15.04 to drwx-- in
15.10), the permissions on /sys/kernel/debug are drwx-- on both
15.10 and 15.04 - which means that /sys/kernel/debug shouldn't be
readable from a non-root account on ei
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: nagios-plugins (Ubuntu)
Status: New => Confirmed
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