Nrpe nagios check_file_age : file not found

gistfile1.txt

Issue: Check_file_age fails to stat file located to /var/tmp/ or /tmp

OS: debian 9
init system: systemd
nagios plugin: check_file_age

Problem: Icinga returns `FILE_AGE CRITICAL: File not found - /var/tmp/foo.bar`

while command runs from bash returns: `FILE_AGE OK: /var/tmp/foo.bar is 12905 seconds old and 0 bytes | age=12905s;46800;50400 size=0B;0;0;0`

solution:

Put `false` to option `PrivateTmp`[1] on file `/etc/systemd/system/multi-user.target.wants/nagios-nrpe-server.service`

[1] https://www.freedesktop.org/software/systemd/man/systemd.exec.html