Please we need your help with check_disk plugin with icinga2.
System Details (Ubuntu 16.04):
$ /usr/lib/nagios/plugins/check_disk -V
check_disk v2.1.2 (monitoring-plugins 2.1.2)
$ icinga2 -V
icinga2 - The Icinga 2 network monitoring daemon (version: r2.6.3-1)
Error (from email output):
Notification Type: PROBLEM
Additional Info: DISK CRITICAL - /var/lib/docker/aufs/mnt/2746bf457464d10db12bfdff0f9ac604bd7213ae7f9c51fee8b8ef0ae64548ec is not accessible: Permission denied
The issue is appearing in more than a server and the weird part is that i have no docker installed on any of them, even the directory ../docker/aufs/mnt/ doesn't exist!
Thank you in advance