Container infrastructure for backing up container stacks using Borg

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README.md

Borg Drone

OCI container for managing Borg backups

Parameter Spec

Environment var prefix: BORGDRONE_

Variable	Type	Default	Usage
BORGDRONE_CHECK	`bool`	`True`	Verify repository before creating backup
BORGDRONE_COMPACT	`bool`	`True`	Compact the repository after all write operations
BORGDRONE_REPO_INIT	`bool`	`True`	Create the repository if it doesn't exist
BORGDRONE_REPO_INIT_APPEND_ONLY	`bool`	`False`	See `borg rcreate --append-only`
BORGDRONE_REPO_INIT_QUOTA	`str`	`none`	See `borg rcreate --storage-quota`
BORGDRONE_REPO_INIT_ENCRYPTION	`multi`	-	See `borg rcreate --encryption`
BORGDRONE_REPO_INIT_OVERWRITE_KEY	`bool`	`False`	If initializing a new repo and `BORGDRONE_REPO_KEY_FILE` exists, overwrite the existing key with the new repo key
BORGDRONE_REPO_KEY_FILE	`path`	-	Path to the repository key file
BORGDRONE_REPO_PATH	`path`	-	Path to the repository
BORGDRONE_REPO_PASSPHRASE	`str`	-	Passphrase for the key specified by `BORGDRONE_REPO_KEY_FILE`
BORGDRONE_REPO_PASSPHRASE_FILE	`str`	-	Passphrase for the key specified by `BORGDRONE_REPO_KEY_FILE` stored in a plaintext file
BORGDRONE_PRUNE	`bool`	`false`	Prune the repository according to policies
BORGDRONE_PRUNE_INTERVAL	`int`	-	See `borg prune --keep-within`
BORGDRONE_PRUNE_SECONDLY	`int`	-	See `borg prune --keep-secondly`
BORGDRONE_PRUNE_MINUTELY	`int`	-	See `borg prune --keep-minutely`
BORGDRONE_PRUNE_HOURLY	`int`	-	See `borg prune --keep-hourly`
BORGDRONE_PRUNE_DAILY	`int`	-	See `borg prune --keep-daily`
BORGDRONE_PRUNE_WEEKLY	`int`	-	See `borg prune --keep-weekly`
BORGDRONE_PRUNE_MONTHLY	`int`	-	See `borg prune --keep-monthly`
BORGDRONE_PRUNE_YEARLY	`int`	-	See `borg prune --keep-yearly`
BORGDRONE_ARCHIVE_COMPRESSION	`multi`	`lz4`	See `borg help compression`
BORGDRONE_ARCHIVE_NAME	`str`	-	Name of the archive to create
BORGDRONE_ARCHIVE_PATH	`csv,path`	-	Comma separated list of paths to add to the archive
BORGDRONE_ARCHIVE_COMMENT	`str`	-	Comment to attach to the archive
BORGDRONE_ARCHIVE_EXCLUDE_PATTERN	`str`	-	See `borg create --exclude`
BORGDRONE_ARCHIVE_EXCLUDE_CACHES	`bool`	`false`	See `borg create --exclude-caches`
BORGDRONE_ARCHIVE_EXCLUDE_IF_PRESENT	`str`	-	See `borg create --exclude-if-present`
BORGDRONE_ARCHIVE_KEEP_EXCLUDE_TAGS	`bool`	`false`	See `borg create --keep-exclude-tags`

Design Spec

All configuration taken from environment
Support server and client operations
Single run: scheduling + start/stop management should be handled by the orchestrator

Operation:

Check whether BORGDRONE_REPO_PATH exists; if not:
Initialize repository at path
Export key to BORGDRONE_REPO_KEY_FILE location
Run borg check on destination repository
Run borg create to create new archive
Run borg prune on destination repository
Run borg compact on destination repository