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