# ngosang/restic-exporter [![Latest release](https://img.shields.io/github/v/release/ngosang/restic-exporter)](https://github.com/ngosang/restic-exporter/releases) [![Docker Pulls](https://img.shields.io/docker/pulls/ngosang/restic-exporter)](https://hub.docker.com/r/ngosang/restic-exporter/) [![Donate PayPal](https://img.shields.io/badge/Donate-PayPal-yellow.svg)](https://www.paypal.com/paypalme/diegoheras0xff) [![Donate Bitcoin](https://img.shields.io/badge/Donate-Bitcoin-f7931a.svg)](https://www.blockchain.com/btc/address/14EcPN47rWXkmFvjfohJx2rQxxoeBRJhej) [![Donate Ethereum](https://img.shields.io/badge/Donate-Ethereum-8c8c8c.svg)](https://www.blockchain.com/eth/address/0x0D1549BbB00926BF3D92c1A8A58695e982f1BE2E) Prometheus exporter for the [Restic](https://github.com/restic/restic) backup system. ## Install ### Form source code Requirements: * Python 3 * [prometheus-client](https://github.com/prometheus/client_python) ```bash pip install -r /requirements.txt export RESTIC_REPO_URL=/data export RESTIC_REPO_PASSWORD_FILE=/restic_password_file python restic-exporter.py ``` ### Docker Docker images are available in [GHCR](https://github.com/ngosang/restic-exporter/pkgs/container/restic-exporter) and [DockerHub](https://hub.docker.com/r/ngosang/restic-exporter). ```bash docker pull ghcr.io/ngosang/restic-exporter or docker pull ngosang/restic-exporter ``` #### Supported Architectures The architectures supported by this image are: * linux/386 * linux/amd64 * linux/arm/v6 * linux/arm/v7 * linux/arm64/v8 * linux/ppc64le * linux/s390x #### docker-compose Compatible with docker-compose v2 schemas: ```yaml --- version: '2.1' services: restic-exporter: image: ngosang/restic-exporter container_name: restic-exporter environment: - TZ=Europe/Madrid - RESTIC_REPO_URL=/data - RESTIC_REPO_PASSWORD= # - RESTIC_REPO_PASSWORD_FILE= - REFRESH_INTERVAL=1800 # 30 min volumes: - /host_path/restic/data:/data ports: - "8001:8001" restart: unless-stopped ``` #### docker cli ```bash docker run -d \ --name=restic-exporter \ -e TZ=Europe/Madrid \ -e RESTIC_REPO_URL=/data \ -e RESTIC_REPO_PASSWORD= \ -e REFRESH_INTERVAL=1800 \ -p 8001:8001 \ --restart unless-stopped \ ngosang/restic-exporter ``` ## Configuration This Prometheus exporter is compatible with all [backends supported by Restic](https://restic.readthedocs.io/en/latest/030_preparing_a_new_repo.html). Some of them need additional environment variables for the secrets. All configuration is done with environment variables: - `RESTIC_REPO_URL`: Restic repository URL. All backends are supported. Examples: * Local repository: `/data` * REST Server: `rest:http://user:password@127.0.0.1:8000/` * Amazon S3: `s3:s3.amazonaws.com/bucket_name` * Backblaze B2: `b2:bucketname:path/to/repo` * Rclone (see notes below): `rclone:gd-backup:/restic` - `RESTIC_REPO_PASSWORD`: Restic repository password in plain text. This is only required if `RESTIC_REPO_PASSWORD_FILE` is not defined. - `RESTIC_REPO_PASSWORD_FILE`: File with the Restic repository password in plain text. This is only required if `RESTIC_REPO_PASSWORD` is not defined. Remember to mount the Docker volume with the file. - `AWS_ACCESS_KEY_ID`: (Optional) Required for Amazon S3, Minio and Wasabi backends. - `AWS_SECRET_ACCESS_KEY`: (Optional) Required for Amazon S3, Minio and Wasabi backends. - `B2_ACCOUNT_ID`: (Optional) Required for Backblaze B2 backend. - `B2_ACCOUNT_KEY`: (Optional) Required for Backblaze B2 backend. - `REFRESH_INTERVAL`: (Optional) Refresh interval for the metrics in seconds. Computing the metrics is a expensive task, keep this value as high as possible. Default is `60` seconds. - `LISTEN_PORT`: (Optional) The address the exporter should listen on. The default is `8001`. - `LISTEN_ADDRESS`: (Optional) The address the exporter should listen on. The default is to listen on all addresses. - `LOG_LEVEL`: (Optional) Log level of the traces. The default is `INFO`. - `EXIT_ON_ERROR`: (Optional) Shutdown exporter on any `restic` error. Default is `Flase` (only log error, such as network error with Cloud backends). - `NO_CHECK`: (Optional) Do not perform `restic check` operation for performance reasons. Default is `False` (perform `restic check`). - `NO_STATS`: (Optional) Do not collect per backup statistics for performance reasons. Default is `False` (collect per backup statistics). ### Configuration for Rclone Rclone is not included in the Docker image. You have to mount the Rclone executable and the Rclone configuration from the host machine. Here is an example with docker-compose: ```yaml version: '2.1' services: restic-exporter: image: ngosang/restic-exporter container_name: restic-exporter environment: - TZ=Europe/Madrid - RESTIC_REPO_URL=rclone:gd-backup:/restic - RESTIC_REPO_PASSWORD= - REFRESH_INTERVAL=1800 # 30 min volumes: - /host_path/restic/data:/data - /usr/bin/rclone:/usr/bin/rclone:ro - /host_path/restic/rclone.conf:/root/.config/rclone/rclone.conf:ro ports: - "8001:8001" restart: unless-stopped ``` ## Exported metrics ```python # HELP restic_check_success Result of restic check operation in the repository # TYPE restic_check_success gauge restic_check_success 1.0 # HELP restic_snapshots_total Total number of snapshots in the repository # TYPE restic_snapshots_total counter restic_snapshots_total 100.0 # HELP restic_backup_timestamp Timestamp of the last backup # TYPE restic_backup_timestamp gauge restic_backup_timestamp{client_hostname="product.example.com",client_username="root",snapshot_hash="20795072cba0953bcdbe52e9cf9d75e5726042f5bbf2584bb2999372398ee835",snapshot_tag="mysql"} 1.666273638e+09 # HELP restic_backup_files_total Number of files in the backup # TYPE restic_backup_files_total counter restic_backup_files_total{client_hostname="product.example.com",client_username="root",snapshot_hash="20795072cba0953bcdbe52e9cf9d75e5726042f5bbf2584bb2999372398ee835",snapshot_tag="mysql"} 8.0 # HELP restic_backup_size_total Total size of backup in bytes # TYPE restic_backup_size_total counter restic_backup_size_total{client_hostname="product.example.com",client_username="root",snapshot_hash="20795072cba0953bcdbe52e9cf9d75e5726042f5bbf2584bb2999372398ee835",snapshot_tag="mysql"} 4.3309562e+07 # HELP restic_backup_snapshots_total Total number of snapshots # TYPE restic_backup_snapshots_total counter restic_backup_snapshots_total{client_hostname="product.example.com",client_username="root",snapshot_hash="20795072cba0953bcdbe52e9cf9d75e5726042f5bbf2584bb2999372398ee835",snapshot_tag="mysql"} 1.0 # HELP restic_scrape_duration_seconds Ammount of time each scrape takes # TYPE restic_scrape_duration_seconds gauge restic_scrape_duration_seconds 166.9411084651947 ``` ## Prometheus config Example Prometheus configuration: ```yaml scrape_configs: - job_name: 'restic-exporter' static_configs: - targets: ['192.168.1.100:8001'] ``` ## Prometheus / Alertmanager rules Example Prometheus rules for alerting: ```yaml - alert: ResticCheckFailed expr: restic_check_success == 0 for: 5m labels: severity: critical annotations: summary: Restic check failed (instance {{ $labels.instance }}) description: Restic check failed\n VALUE = {{ $value }}\n LABELS = {{ $labels }} - alert: ResticOutdatedBackup # 1209600 = 15 days expr: time() - restic_backup_timestamp > 1209600 for: 0m labels: severity: critical annotations: summary: Restic {{ $labels.client_hostname }} / {{ $labels.client_username }} backup is outdated description: Restic backup is outdated\n VALUE = {{ $value }}\n LABELS = {{ $labels }} ``` ## Grafana dashboard There is a reference Grafana dashboard in [grafana/grafana_dashboard.json](./grafana/grafana_dashboard.json). ![](./grafana/grafana_dashboard.png)