dBacker

This application can be used to make regular backups of various applications and restores from S3. It will perform daily backups unless configured to do otherwise.

Supported services

• PostgreSQL
• MySQL/MariaDB
• Gitea
• Tarball
• Consul

Supported stores

• S3
• Filesystem (local)

The schedule function can also be used on restore if you need to test your backups regularly.

Environment variables

Global configuration

• CONFIG: load config from a yaml file

Backup/restore configuration

• SAVE_DIR: directory to store the temporal backup after creating/retrieving it.`
• SCHEDULE_RANDOM_DELAY: maximum number of seconds (value choosen at random) to wait before starting a task. There is no random delay by default.
• SCHEDULE: specifies when to start a task. Defaults to @daily on backup, none on restore. Accepts cron format, like 0 0 * * * . Set to none to disable and perform only one task.

Backup-related configuration

• MAX_BACKUPS: maximum number of backups to keep on the store.

Restore related configuration

• RESTORE_FILE: Restore directly from this filename instead of searching for the most recent one. Only used with the restore command.

Gitea configuration

• GITEA_CONFIG: custom location of the gogs config file.
• GITEA_DATA: location of the Gogs data directory.

Database common config

• DATABASE_HOST: database host.
• DATABASE_PORT: database port.
• DATABASE_NAME: database name.
• DATABASE_USER: database user.
• DATABASE_PASSWORD: database password.
• DATABASE_PASSWORD_FILE: database password file, has precendnce over DATABASE_PASSWORD
• DATABASE_OPTIONS: custom options to pass to the backup/restore application.
• DATABASE_COMPRESS: compress the sql file with gzip.
• DATABASE_IGNORE_EXIT_CODE: ignore is the restore operation returns a non-zero exit code.

Postgres configuration

• POSTGRES_CUSTOM_FORMAT: use custom dump format instead of plain text backups.

Tarball configuration

• TARBALL_PATH_SOURCE: directory to backup/restore.
• TARBALL_NAME_PREFIX: name prefix of the created tarball. If unset it will use the backup directory name.
• TARBALL_COMPRESS: compress the tarball with gzip.

S3 configuration

• S3_ENDPOINT: url of the 33 endpoint, for example https://nyc3.digitaloceanspaces.com.
• S3_REGION: region where the bucket is located, for example us-east-1.
• S3_BUCKET: name of the bucket, for example backups.
• S3_PREFIX: for example private/files.
• S3_FORCE_PATH_STYLE: set to 1 if you are using minio.
• S3_KEEP_FILE: keep file on the local filesystem after uploading it to S3.

The credentials are passed using the standard variables:

• AWS_ACCESS_KEY_ID: AWS access key. AWS_ACCESS_KEY can also be used.
• AWS_SECRET_ACCESS_KEY: AWS secret key. AWS_SECRET_KEY can also be used.
• AWS_SESSION_TOKEN: AWS session token. Optional, will be used if present.

The credentials can also be stored in a file. The location of the file can be set in AWS_SHARED_CREDENTIALS_FILE, else it will use ~/.aws/credentials The format of the file is the following:

[default]
aws_access_key_id = YOUR_AWS_ACCESS_KEY_ID
aws_secret_access_key = YOUR_AWS_SECRET_ACCESS_KEY