borgmatic configuration reference

Configuration file

Here is a full sample borgmatic configuration file including all available options:

# Where to look for files to backup, and where to store those backups. See
# https://borgbackup.readthedocs.io/en/stable/quickstart.html and
# https://borgbackup.readthedocs.io/en/stable/usage.html#borg-create for details.
location:
    # List of source directories to backup (required). Globs and tildes are expanded.
    source_directories:
        - /home
        - /etc
        - /var/log/syslog*

    # Paths to local or remote repositories (required). Tildes are expanded. Multiple
    # repositories are backed up to in sequence. See ssh_command for SSH options like
    # identity file or port.
    repositories:
        - user@backupserver:sourcehostname.borg

    # Stay in same file system (do not cross mount points). Defaults to false.
    #one_file_system: true

    # Only store/extract numeric user and group identifiers. Defaults to false.
    #numeric_owner: true

    # Use Borg's --read-special flag to allow backup of block and other special
    # devices. Use with caution, as it will lead to problems if used when
    # backing up special devices such as /dev/zero. Defaults to false.
    #read_special: false

    # Record bsdflags (e.g. NODUMP, IMMUTABLE) in archive. Defaults to true.
    #bsd_flags: true

    # Mode in which to operate the files cache. See
    # https://borgbackup.readthedocs.io/en/stable/usage/create.html#description for
    # details. Defaults to "ctime,size,inode".
    #files_cache: ctime,size,inode

    # Alternate Borg local executable. Defaults to "borg".
    #local_path: borg1

    # Alternate Borg remote executable. Defaults to "borg".
    #remote_path: borg1

    # Any paths matching these patterns are included/excluded from backups. Globs are
    # expanded. (Tildes are not.) Note that Borg considers this option experimental.
    # See the output of "borg help patterns" for more details. Quote any value if it
    # contains leading punctuation, so it parses correctly.
    #patterns:
    #    - R /
    #    - '- /home/*/.cache'
    #    - + /home/susan
    #    - '- /home/*'

    # Read include/exclude patterns from one or more separate named files, one pattern
    # per line. Note that Borg considers this option experimental. See the output of
    # "borg help patterns" for more details.
    #patterns_from:
    #    - /etc/borgmatic/patterns

    # Any paths matching these patterns are excluded from backups. Globs and tildes
    # are expanded. See the output of "borg help patterns" for more details.
    #exclude_patterns:
    #    - '*.pyc'
    #    - ~/*/.cache
    #    - /etc/ssl

    # Read exclude patterns from one or more separate named files, one pattern per
    # line. See the output of "borg help patterns" for more details.
    #exclude_from:
    #    - /etc/borgmatic/excludes

    # Exclude directories that contain a CACHEDIR.TAG file. See
    # http://www.brynosaurus.com/cachedir/spec.html for details. Defaults to false.
    #exclude_caches: true

    # Exclude directories that contain a file with the given filename. Defaults to not
    # set.
    #exclude_if_present: .nobackup

# Repository storage options. See
# https://borgbackup.readthedocs.io/en/stable/usage.html#borg-create and
# https://borgbackup.readthedocs.io/en/stable/usage/general.html#environment-variables for
# details.
#storage:
    # The standard output of this command is used to unlock the encryption key. Only
    # use on repositories that were initialized with passcommand/repokey encryption.
    # Note that if both encryption_passcommand and encryption_passphrase are set,
    # then encryption_passphrase takes precedence. Defaults to not set.
    #encryption_passcommand: secret-tool lookup borg-repository repo-name

    # Passphrase to unlock the encryption key with. Only use on repositories that were
    # initialized with passphrase/repokey encryption. Quote the value if it contains
    # punctuation, so it parses correctly. And backslash any quote or backslash
    # literals as well. Defaults to not set.
    #encryption_passphrase: "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"

    # Number of seconds between each checkpoint during a long-running backup. See
    # https://borgbackup.readthedocs.io/en/stable/faq.html#if-a-backup-stops-mid-way-does-the-already-backed-up-data-stay-there
    # for details. Defaults to checkpoints every 1800 seconds (30 minutes).
    #checkpoint_interval: 1800

    # Specify the parameters passed to then chunker (CHUNK_MIN_EXP, CHUNK_MAX_EXP,
    # HASH_MASK_BITS, HASH_WINDOW_SIZE). See https://borgbackup.readthedocs.io/en/stable/internals.html
    # for details. Defaults to "19,23,21,4095".
    #chunker_params: 19,23,21,4095

    # Type of compression to use when creating archives. See
    # https://borgbackup.readthedocs.org/en/stable/usage.html#borg-create for details.
    # Defaults to no compression.
    #compression: lz4

    # Remote network upload rate limit in kiBytes/second. Defaults to unlimited.
    #remote_rate_limit: 100

    # Command to use instead of "ssh". This can be used to specify ssh options.
    # Defaults to not set.
    #ssh_command: ssh -i /path/to/private/key

    # Umask to be used for borg create. Defaults to 0077.
    #umask: 0077

    # Maximum seconds to wait for acquiring a repository/cache lock. Defaults to 1.
    #lock_wait: 5

    # Name of the archive. Borg placeholders can be used. See the output of
    # "borg help placeholders" for details. Defaults to
    # "{hostname}-{now:%Y-%m-%dT%H:%M:%S.%f}". If you specify this option, you must
    # also specify a prefix in the retention section to avoid accidental pruning of
    # archives with a different archive name format. And you should also specify a
    # prefix in the consistency section as well.
    #archive_name_format: '{hostname}-documents-{now}'

# Retention policy for how many backups to keep in each category. See
# https://borgbackup.readthedocs.org/en/stable/usage.html#borg-prune for details.
# At least one of the "keep" options is required for pruning to work.
retention:
    # Keep all archives within this time interval.
    #keep_within: 3H

    # Number of secondly archives to keep.
    #keep_secondly: 60

    # Number of minutely archives to keep.
    #keep_minutely: 60

    # Number of hourly archives to keep.
    #keep_hourly: 24

    # Number of daily archives to keep.
    keep_daily: 7

    # Number of weekly archives to keep.
    #keep_weekly: 4

    # Number of monthly archives to keep.
    #keep_monthly: 6

    # Number of yearly archives to keep.
    #keep_yearly: 1

    # When pruning, only consider archive names starting with this prefix.
    # Borg placeholders can be used. See the output of "borg help placeholders" for
    # details. Defaults to "{hostname}-".
    #prefix: sourcehostname

# Consistency checks to run after backups. See
# https://borgbackup.readthedocs.org/en/stable/usage.html#borg-check and
# https://borgbackup.readthedocs.org/en/stable/usage.html#borg-extract for details.
#consistency:
    # List of one or more consistency checks to run: "repository", "archives", and/or
    # "extract". Defaults to "repository" and "archives". Set to "disabled" to disable
    # all consistency checks. "repository" checks the consistency of the repository,
    # "archive" checks all of the archives, and "extract" does an extraction dry-run
    # of the most recent archive.
    #checks:
    #    - repository
    #    - archives

    # Paths to a subset of the repositories in the location section on which to run
    # consistency checks. Handy in case some of your repositories are very large, and
    # so running consistency checks on them would take too long. Defaults to running
    # consistency checks on all repositories configured in the location section.
    #check_repositories:
    #    - user@backupserver:sourcehostname.borg

    # Restrict the number of checked archives to the last n. Applies only to the "archives" check. Defaults to checking all archives.
    #check_last: 3

    # When performing the "archives" check, only consider archive names starting with
    # this prefix. Borg placeholders can be used. See the output of
    # "borg help placeholders" for details. Defaults to "{hostname}-".
    #prefix: sourcehostname

# Shell commands or scripts to execute before and after a backup or if an error has occurred.
# IMPORTANT: All provided commands and scripts are executed with user permissions of borgmatic.
# Do not forget to set secure permissions on this file as well as on any script listed (chmod 0700) to
# prevent potential shell injection or privilege escalation.
#hooks:
    # List of one or more shell commands or scripts to execute before creating a backup.
    #before_backup:
    #    - echo "Starting a backup job."

    # List of one or more shell commands or scripts to execute after creating a backup.
    #after_backup:
    #    - echo "Backup created."

    # List of one or more shell commands or scripts to execute in case an exception has occurred.
    #on_error:
    #    - echo "Error while creating a backup."

Note that you can also download this configuration file for use locally.