Monitoring backup runs with Munin

My backup server boots up at 3 every night, runs the backup script and shuts down. This did not work for some time and I was not warned about it.

The solution for this problem:

1. Let the backup server touch a file on the home server before shutting down
2. Have Munin monitor the file change date and warn if it is too old.

I use the disk/file_age plugin available in the munin-contrib repository. To put it into a separate section, I added support for the host_name configuration to the plugin.

Configuration​

[backup_file_age]
env.host_name               backup
env.file1_path              /var/lib/munin/last-touch/baup-backup
env.file1_label             Last baup backup
env.file1_warning           172800
env.file1_critical          604800

Screenshots​