restic_exporter

Convert the JSON output of a restic backup job to metrics that Prometheus Node Exporter would understand. The metrics will be shown in the standard output, so then you have to direct them to a file in the Prometheus Node Exporter folder specify with the textfile-collector.

Requirements

Installation

Linux

sudo python3 setup.py install

Windows (from PowerShell)

& $(where.exe python).split()[0] setup.py install

Usage

restic_exporter.py [OPTIONS]

Options:
-d, --debug-level [CRITICAL|ERROR|WARNING|INFO|DEBUG|NOTSET]
                                Set the debug level for the standard output.
-l, --log-file TEXT             File to store all debug messages.
-j, --json-file TEXT            JSON file containing the output of restic
                                [required]
-n, --job-name TEXT             Restic job name to attach to the exported
                                metrics  [required]
-a, --extra-labels TEXT         Pairs key=value separated by commas with
                                extra labels to add to the summary
-m, --metric-name TEXT          Metric name. Spaces will be replaced with
                                underscore (_).
-d, --metric-description TEXT   Metric description.
--config FILE                   Read configuration from FILE.
--help                          Show this message and exit.

For example, you run:

restic backup --repo /var/restic_backups --json /home > /tmp/my_restic_result.json

Then assume your Prometheus Node Exporter is running with --collector.textfile.directory=/var/lib/node_exporter (this is set in /etc/default/prometheus-node-exporter in Ubuntu for example. In this case of using the folder /var/lib/node_exporter, then you would run restic_exporter.py with this parameters:

restic_exporter.py --json-file /tmp/my_restic_result.json --job-name 'home_folders' > /var/lib/node_exporter/restic_home_folders.prom