mirror of
https://github.com/offen/docker-volume-backup.git
synced 2024-11-22 13:20:29 +01:00
123 lines
4.8 KiB
Markdown
123 lines
4.8 KiB
Markdown
---
|
|
title: Home
|
|
layout: home
|
|
nav_order: 1
|
|
---
|
|
|
|
# offen/docker-volume-backup
|
|
{:.no_toc}
|
|
|
|
Backup Docker volumes locally or to any S3, WebDAV, Azure Blob Storage, Dropbox or SSH compatible storage.
|
|
{: .fs-6 .fw-300 }
|
|
|
|
---
|
|
|
|
The [offen/docker-volume-backup](https://hub.docker.com/r/offen/docker-volume-backup) Docker image can be used as a lightweight (below 15MB) companion container to an existing Docker setup.
|
|
It handles __recurring or one-off backups of Docker volumes__ to a __local directory__, __any S3, WebDAV, Azure Blob Storage, Dropbox or SSH compatible storage (or any combination thereof) and rotates away old backups__ if configured. It also supports __encrypting your backups using GPG__ and __sending notifications for (failed) backup runs__.
|
|
|
|
{: .note }
|
|
Code and documentation for `v1` versions are found on [this branch][v1-branch].
|
|
|
|
[v1-branch]: https://github.com/offen/docker-volume-backup/tree/v1
|
|
|
|
---
|
|
|
|
1. TOC
|
|
{:toc}
|
|
|
|
## Quickstart
|
|
|
|
### Recurring backups in a compose setup
|
|
|
|
Add a `backup` service to your compose setup and mount the volumes you would like to see backed up:
|
|
|
|
```yml
|
|
version: '3'
|
|
|
|
services:
|
|
volume-consumer:
|
|
build:
|
|
context: ./my-app
|
|
volumes:
|
|
- data:/var/my-app
|
|
labels:
|
|
# This means the container will be stopped during backup to ensure
|
|
# backup integrity. You can omit this label if stopping during backup
|
|
# not required.
|
|
- docker-volume-backup.stop-during-backup=true
|
|
|
|
backup:
|
|
# In production, it is advised to lock your image tag to a proper
|
|
# release version instead of using `latest`.
|
|
# Check https://github.com/offen/docker-volume-backup/releases
|
|
# for a list of available releases.
|
|
image: offen/docker-volume-backup:latest
|
|
restart: always
|
|
env_file: ./backup.env # see below for configuration reference
|
|
volumes:
|
|
- data:/backup/my-app-backup:ro
|
|
# Mounting the Docker socket allows the script to stop and restart
|
|
# the container during backup and to access the container labels to
|
|
# specify custom commands. You can omit this if you don't want to
|
|
# stop the container or run custom commands. In case you need to
|
|
# proxy the socket, you can also provide a location by setting
|
|
# `DOCKER_HOST` in the container
|
|
- /var/run/docker.sock:/var/run/docker.sock:ro
|
|
# If you mount a local directory or volume to `/archive` a local
|
|
# copy of the backup will be stored there. You can override the
|
|
# location inside of the container by setting `BACKUP_ARCHIVE`.
|
|
# You can omit this if you do not want to keep local backups.
|
|
- /path/to/local_backups:/archive
|
|
volumes:
|
|
data:
|
|
```
|
|
|
|
### One-off backups using Docker CLI
|
|
|
|
To run a one time backup, mount the volume you would like to see backed up into a container and run the `backup` command:
|
|
|
|
```console
|
|
docker run --rm \
|
|
-v data:/backup/data \
|
|
--env AWS_ACCESS_KEY_ID="<xxx>" \
|
|
--env AWS_SECRET_ACCESS_KEY="<xxx>" \
|
|
--env AWS_S3_BUCKET_NAME="<xxx>" \
|
|
--entrypoint backup \
|
|
offen/docker-volume-backup:v2
|
|
```
|
|
|
|
Alternatively, pass a `--env-file` in order to use a full config as described below.
|
|
|
|
## Available image registries
|
|
|
|
This Docker image is published to both Docker Hub and the GitHub container registry.
|
|
Depending on your preferences and needs, you can reference both `offen/docker-volume-backup` as well as `ghcr.io/offen/docker-volume-backup`:
|
|
|
|
```
|
|
docker pull offen/docker-volume-backup:v2
|
|
docker pull ghcr.io/offen/docker-volume-backup:v2
|
|
```
|
|
|
|
Documentation references Docker Hub, but all examples will work using ghcr.io just as well.
|
|
|
|
## Supported Engines
|
|
|
|
This tool is developed and tested against the Docker CE engine exclusively.
|
|
While it may work against different implementations (e.g. Balena Engine), there are no guarantees about support for non-Docker engines.
|
|
|
|
## Differences to `jareware/docker-volume-backup`
|
|
|
|
This image is heavily inspired by `jareware/docker-volume-backup`. We decided to publish this image as a simpler and more lightweight alternative because of the following requirements:
|
|
|
|
- The original image is based on `ubuntu` and requires additional tools, making it heavy.
|
|
This version is roughly 1/25 in compressed size (it's ~15MB).
|
|
- The original image uses a shell script, when this version is written in Go.
|
|
- The original image proposed to handle backup rotation through AWS S3 lifecycle policies.
|
|
This image adds the option to rotate away old backups through the same command so this functionality can also be offered for non-AWS storage backends like MinIO.
|
|
Local copies of backups can also be pruned once they reach a certain age.
|
|
- InfluxDB specific functionality from the original image was removed.
|
|
- `arm64` and `arm/v7` architectures are supported.
|
|
- Docker in Swarm mode is supported.
|
|
- Notifications on finished backups are supported.
|
|
- IAM authentication through instance profiles is supported.
|