Borg exporter

Export borg information to prometheus.

Dependencies

Prometheus (obviously)
Node Exporter with textfile collector
Borg (https://github.com/borgbackup/borg)

Install

Copy borg_exporter to /usr/local/bin.

Copy borg.env to /etc/borg and replace your repokey and repository in it.

Copy the systemd unit to /etc/systemd/system and run

systemctl enable prometheus-borg-exporter.timer
systemctl start prometheus-borg-exporter.timer

Alternative: Use ExecStartPost in your borg backupt timer itself to write our the metrics.

Configure your node exporter

Make sure your node exporter uses textfile in --collectors.enabled and add the following parameter: --collector.textfile.directory=/var/lib/node_exporter/textfile_collector

Example queries

backup_total_size_dedup{job='node'}
backup_last_size_dedup{job='node'}
backup_chunks_total{job='node'}

Grafana dashboard