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Backupbot II: This Time It's Easily Configurable

Automatically backup files from running Docker Swarm services based on labels.

TODO

Make a Docker image of this
Rip out or improve Restic stuff
Add secret handling for database backups
Continuous linting with shellcheck

Label format

(Haven't done secrets yet, here are two options)

v1:

    deploy:
      labels:
        backupbot.backup: "true"
        backupbot.backup.repos: "$some_thing"
        backupbot.backup.at: "* * * * *"
        backupbot.backup.pre-hook: 'mysqldump -u root -p"$(cat /run/secrets/db_root_password)" -f /tmp/dump/dump.db'
        backupbot.backup.post-hook: "rm -rf /tmp/dump/dump.db"
        backupbot.backup.path: "/tmp/dump/"

v2:

    deploy:
      labels:
        backupbot.backup: "true"
        backupbot.backup.repos: "$some_thing"
        backupbot.backup.at: "* * * * *"
        backupbot.backup.post-hook: "rm -rf /tmp/dump/dump.db"
        backupbot.backup.secrets": "db_root_password",
        backupbot.backup.pre-hook: 'mysqldump -u root -p"$DB_ROOT_PASSWORD" -f /tmp/dump/dump.db'

Questions:

Should frequency be configurable per service, centrally, or both?

- "backupbot.backup.at: "* * * * *"