Restic Configuration Reference

For users, k8up restic can only be configured through the respective Custom Resources Schedule, Backup, Check, Prune, Archive and Restore and through the global properties of the k8up operator.

The k8up restic module used to be a component called wrestic. Their repositories were merged in 2021.

Arguments and Environment Variables

The required arguments depend on the actions that should be performed.

The environment variable RESTIC_PASSWORD must always be defined. It is not used by k8up restic directly, but it is used when the actual restic binary is invoked.
The argument --resticRepository must always be defined.
If --prune is set, then all the --keepWithin* arguments need to be valid and positive durations, see the respective Go documentation.
If --prune is set, then all the other --keep* arguments (except --keepTags) need to be positive numbers (integers).
If --restore is set, then --restoreType must be defined as well.
If --restore is set and --restoreType is set to s3, then all the --restoreS3* arguments have to be defined as well.

See k8up restic --help for all the options:

NAME:
   k8up restic

USAGE:
   k8up restic [command options] [arguments...]

DESCRIPTION:
   Start k8up in restic mode

OPTIONS:
   --check                                                                        Set, if the container should do a check (default: false)
   --prune                                                                        Set, if the container should do a prune (default: false)
   --restore                                                                      Set, if the container should attempt a restore (default: false)
   --archive                                                                      Set, if the container should do an archive (default: false)
   --tag value [ --tag value ]                                                    List of tags to consider for given operation
   --backupCommandAnnotation value                                                Defines the command to invoke when doing a backup via STDOUT. [$BACKUPCOMMAND_ANNOTATION]
   --fileExtensionAnnotation value                                                Defines the file extension to use for STDOUT backups. [$FILEEXTENSION_ANNOTATION]
   --backucontainerannotation value                                               set the annotation name that specify the backup container inside the Pod (default: "k8up.io/backupcommand-container") [$BACKUP_CONTAINERANNOTATION]
   --skipPreBackup                                                                If the job should skip the backup command and only backup volumes. (default: false) [$SKIP_PREBACKUP]
   --promURL value                                                                Sets the URL of a prometheus push gateway to report metrics. [$PROM_URL]
   --webhookURL value, --statsURL value                                           Sets the URL of a server which will retrieve a webhook after the action completes. [$STATS_URL]
   --backupDir value                                                              Set from which directory the backup should be performed. (default: "/data") [$BACKUP_DIR]
   --restoreDir value                                                             Set to which directory the restore should be performed. (default: "/data") [$RESTORE_DIR]
   --restoreFilter value                                                          Simple filter to define what should get restored. For example the PVC name
   --restoreSnap value                                                            Snapshot ID, if empty takes the latest snapshot
   --restoreType value                                                            Type of this restore, 'folder' or 's3'
   --restoreS3AccessKey value                                                     S3 access key used to connect to the S3 endpoint when restoring [$RESTORE_ACCESSKEYID]
   --restoreS3SecretKey value                                                     S3 secret key used to connect to the S3 endpoint when restoring [$RESTORE_SECRETACCESSKEY]
   --restoreS3Endpoint value                                                      S3 endpoint to connect to when restoring, e.g. 'https://minio.svc:9000/backup [$RESTORE_S3ENDPOINT]
   --restoreCaCert value                                                          The certificate authority file path using for restore [$RESTORE_CA_CERT_FILE]
   --restoreClientCert value                                                      The client certificate file path using for restore [$RESTORE_CLIENT_CERT_FILE]
   --restoreClientKey value                                                       The client private key file path using for restore [$RESTORE_CLIENT_KEY_FILE]
   --verifyRestore                                                                If the restore should get verified, only for PVCs restore (default: false)
   --trimRestorePath                                                              If set, strips the value of --restoreDir from the lefts side of the remote restore path value (default: enabled) [$TRIM_RESTOREPATH]
   --resticBin value                                                              The path to the restic binary. (default: "/usr/local/bin/restic") [$RESTIC_BINARY]
   --resticRepository value                                                       The restic repository to perform the action with [$RESTIC_REPOSITORY]
   --resticOptions value                                                          Additional options to pass to restic in the format 'key=value,key2=value2' [$RESTIC_OPTIONS]
   --exclude pattern [ --exclude pattern ]                                        In backup, passed to restic: exclude a pattern (can be specified multiple times) [$RESTIC_EXCLUDE]
   --excludeCaches                                                                In backup, passed to restic: excludes cache directories that are marked with a CACHEDIR.TAG file. See https://bford.info/cachedir/ for the Cache Directory Tagging Standard (default: false) [$RESTIC_EXCLUDE_CACHES]
   --excludeFile file [ --excludeFile file ]                                      In backup, passed to restic: read exclude patterns from a file (can be specified multiple times). This file MUST be available in backup job container (e.g. in the directory being backed up) [$RESTIC_EXCLUDE_FILE]
   --excludeIfPresent filename[:header] [ --excludeIfPresent filename[:header] ]  In backup, passed to restic: takes filename[:header], exclude contents of directories containing filename (except filename itself) if header of that file is as provided (can be specified multiple times) [$RESTIC_EXCLUDE_IF_PRESENT]
   --excludeLargerThan size                                                       In backup, passed to restic: max size of the files to be backed up (allowed suffixes: k/K, m/M, g/G, t/T) [$RESTIC_EXCLUDE_LARGER_THAT]
   --filesFrom file [ --filesFrom file ]                                          In backup, passed to restic: read the files to backup from file (can be combined with file args; can be specified multiple times) [$RESTIC_FILES_FROM]
   --filesFromRaw file [ --filesFromRaw file ]                                    In backup, passed to restic: read the files to backup from file (can be combined with file args; can be specified multiple times) [$RESTIC_FILES_FROM_RAW]
   --filesFromVerbatim file [ --filesFromVerbatim file ]                          In backup, passed to restic: read the files to backup from file (can be combined with file args; can be specified multiple times) [$RESTIC_FILES_FROM_VERBATIM]
   --iExclude pattern [ --iExclude pattern ]                                      In backup, passed to restic: same as --exclude pattern but ignores the casing of filenames [$RESTIC_IEXCLUDE]
   --iExcludeFile pattern [ --iExcludeFile pattern ]                              In backup, passed to restic: same as --exclude-file pattern but ignores the casing of filenames [$RESTIC_IEXCLUDE_FILE]
   --oneFileSystem                                                                In backup, passed to restic: exclude other file systems, don't cross filesystem boundaries and subvolumes (default: false) [$RESTIC_ONE_FILESYSTEM]
   --keepLatest value                                                             While pruning, keep at the latest snapshot (default: 0) [$KEEP_LAST, $KEEP_LATEST]
   --keepHourly value                                                             While pruning, keep hourly snapshots (default: 0) [$KEEP_HOURLY]
   --keepDaily value                                                              While pruning, keep daily snapshots (default: 0) [$KEEP_DAILY]
   --keepWeekly value                                                             While pruning, keep weekly snapshots (default: 0) [$KEEP_WEEKLY]
   --keepMonthly value                                                            While pruning, keep monthly snapshots (default: 0) [$KEEP_MONTHLY]
   --keepYearly value                                                             While pruning, keep yearly snapshots (default: 0) [$KEEP_YEARLY]
   --keepTags                                                                     While pruning, keep tagged snapshots (default: false) [$KEEP_TAG, $KEEP_TAGS]
   --keepWithinHourly value                                                       While pruning, keep hourly snapshots within the given duration, e.g. '2y5m7d3h' [$KEEP_WITHIN_HOURLY]
   --keepWithinDaily value                                                        While pruning, keep daily snapshots within the given duration, e.g. '2y5m7d3h' [$KEEP_WITHIN_DAILY]
   --keepWithinWeekly value                                                       While pruning, keep weekly snapshots within the given duration, e.g. '2y5m7d3h' [$KEEP_WITHIN_WEEKLY]
   --keepWithinMonthly value                                                      While pruning, keep monthly snapshots within the given duration, e.g. '2y5m7d3h' [$KEEP_WITHIN_MONTHLY]
   --keepWithinYearly value                                                       While pruning, keep yearly snapshots within the given duration, e.g. '2y5m7d3h' [$KEEP_WITHIN_YEARLY]
   --keepWithin value                                                             While pruning, keep tagged snapshots within the given duration, e.g. '2y5m7d3h' [$KEEP_WITHIN]
   --targetPods value [ --targetPods value ]                                      Filter list of pods by TARGET_PODS names [$TARGET_PODS]
   --sleepDuration value                                                          Sleep for specified amount until init starts (default: 0s) [$SLEEP_DURATION]
   --varDir value                                                                 The var directory is stored k8up metadata files and temporary files (default: "/k8up")
   --caCert value                                                                 The certificate authority file path [$CA_CERT_FILE]
   --clientCert value                                                             The client certificate file path [$CLIENT_CERT_FILE]
   --clientKey value                                                              The client private key file path [$CLIENT_KEY_FILE]
   --help, -h                                                                     show help (default: false)