restic kumar connector

This is a restic connector for kumar. It allows you to check if you backups did run in time.

Usage

Running the Container

Just run the container, ideally using compose and expose port 80, maybe use something like traffic to make it https. You could add a volume to /var/www/data to persist the data. This is not necessary, but a fresh container will not report functional backups until you reported something. If it's nor prevented on a network level for the world to submit data, you might whant to set RKC_USER and RKC_PASS to prevent random people from submitting data. You need to use these credentials when reporting to the webservice.

Reporting

To report your you need to post the output of restic snapshots to the webservice, eg:

restic snapshots | curl -X POST -d @- http://restic_kumar_reporter/

or

restic snapshots | curl -X POST --data-binary @- -u "$USER:$PASS" http://restic_kumar_reporter/

when RKC_USER and RKC_PASS are set.

Checking with kumar

Just point kumar to your webservice. The Output looks something like this:

BACKUP|host1|/opt/mailcow|OK
BACKUP|host1|/var/lib/docker/volumes|OK
BACKUP|host2|/opt/docker|OK
BACKUP|host2|/var/lib/docker/volumes|OK
BACKUP|host3|/opt/docker|TOO_OLD
BACKUP|host3|/var/lib/docker/volumes|OK
BACKUP|host4|/opt/docker|OK
BACKUP|host4|/var/lib/docker/volumes|OK
BACKUP|host5|/opt/docker|TOO_OLD
BACKUP|host5|/var/lib/docker/volumes|TOO_OLD

output is always sorted by host and path. so you might check a whole block of hosts at once.

A Backup is okay if it is not older than X hours (default 28). You can change this by requesting with ?maxage=XX where XX is the maximum age in hours.