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Duplicati backup

Duplicati is a free backup client that securely stores encrypted, incremental, compressed backups on cloud storage services and remote file servers. It works with Amazon S3, Windows Live SkyDrive, Google Drive (Google Docs), Rackspace Cloud Files or WebDAV, SSH, FTP (and many more).

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Backup home server system​

To secure our home server system configuration, we can use Duplicati to backup the system to the cloud storage.

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The backup files generated by Duplicati can only be restored by Duplicati. If you suffer a catastrophic failure of your system, you will need to

  1. Install your operating system (Linux in my case)
  2. Install Docker
  3. Install Duplicati Docker container

Install Duplicati Docker container​

Since all our home server services docker containers' configurations are mapped to /opt, we want to backup the whole /opt directory in our home server.

According we will need to map the /opt directory to the Duplicati /source directory so that Duplicati can backup the /opt directory of our home server. (see below dupliati.volume)

/opt/docker-compose.yaml

version: '3.0'

services:
  # ... other services

  duplicati:
    image: lscr.io/linuxserver/duplicati:latest
    container_name: duplicati-backup
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Asia/Tokyo
    volumes:
      - /opt:/source # This will create a /source/ directory in the container with the host's /opt/ directory content in it, so that Duplicati can backup the /opt/ directory of our home server.
      - /opt/duplicati/config:/config # The will create a /opt/duplicati/config/ directory in which we have access to the Duplicati's /config/ directory content in host /opt/ (it is so that we can also backup the Duplicati's configuration.)

    ports:
      - 8200:8200
    restart: unless-stopped

After running sudo docker compose up -d, we can access Duplicati from http://your-home-server-ip:8200 and then using the Web UI to backup/restore our home server system config.

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Big thanks to Youtuber Home Automation Guy created this video to guide through the detailed setup backup process by Duplicati Web UI.

Embaded Duplicati in Home Assistant​

We can also embed Duplicati in Home Assistant navigation panel so that we can manage all our home server services in one place.

/opt/homeassistant/configuration.yaml
panel_iframe:
  duplicati:
    title: Duplicati
    icon: mdi:backup-restore
    url: http://your-home-server-ip:8200