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automatically create symlink to latest local backup if configured
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@ -120,6 +120,11 @@ You can populate below template according to your requirements and use it as you
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# BACKUP_FILENAME="backup-%Y-%m-%dT%H-%M-%S.tar.gz"
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# BACKUP_FILENAME="backup-%Y-%m-%dT%H-%M-%S.tar.gz"
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# When storing local backups, a symlink to the latest backup can be created
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# in case a value is given for this key. This has no effect on remote backups.
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# BACKUP_LATEST_SYMLINK="backup.latest.tar.gz"
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########### BACKUP STORAGE
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########### BACKUP STORAGE
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# The name of the remote bucket that should be used for storing backups. If
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# The name of the remote bucket that should be used for storing backups. If
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@ -437,6 +442,9 @@ services:
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# ... define other services using the `data` volume here
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# ... define other services using the `data` volume here
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backup:
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backup:
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image: offen/docker-volume-backup:latest
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image: offen/docker-volume-backup:latest
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environment:
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BACKUP_FILENAME: backup-%Y-%m-%dT%H-%M-%S.tar.gz
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BACKUP_LATEST_SYMLINK: backup-latest.tar.gz
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volumes:
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volumes:
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- data:/backup/my-app-backup:ro
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- data:/backup/my-app-backup:ro
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- /var/run/docker.sock:/var/run/docker.sock:ro
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- /var/run/docker.sock:/var/run/docker.sock:ro
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@ -89,6 +89,7 @@ type script struct {
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type config struct {
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type config struct {
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BackupSources string `split_words:"true" default:"/backup"`
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BackupSources string `split_words:"true" default:"/backup"`
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BackupFilename string `split_words:"true" default:"backup-%Y-%m-%dT%H-%M-%S.tar.gz"`
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BackupFilename string `split_words:"true" default:"backup-%Y-%m-%dT%H-%M-%S.tar.gz"`
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BackupLatestSymlink string `split_words:"true"`
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BackupArchive string `split_words:"true" default:"/archive"`
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BackupArchive string `split_words:"true" default:"/archive"`
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BackupRetentionDays int32 `split_words:"true" default:"-1"`
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BackupRetentionDays int32 `split_words:"true" default:"-1"`
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BackupPruningLeeway time.Duration `split_words:"true" default:"1m"`
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BackupPruningLeeway time.Duration `split_words:"true" default:"1m"`
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@ -380,6 +381,16 @@ func (s *script) copyBackup() error {
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return fmt.Errorf("copyBackup: error copying file to local archive: %w", err)
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return fmt.Errorf("copyBackup: error copying file to local archive: %w", err)
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}
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}
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s.logger.Infof("Stored copy of backup `%s` in local archive `%s`.", s.file, s.c.BackupArchive)
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s.logger.Infof("Stored copy of backup `%s` in local archive `%s`.", s.file, s.c.BackupArchive)
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if s.c.BackupLatestSymlink != "" {
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symlink := path.Join(s.c.BackupArchive, s.c.BackupLatestSymlink)
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if _, err := os.Lstat(symlink); err == nil {
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os.Remove(symlink)
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}
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if err := os.Symlink(name, symlink); err != nil {
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return fmt.Errorf("copyBackup: error creating latest symlink: %w", err)
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}
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s.logger.Infof("Created/Updated symlink `%s` for latest backup.", s.c.BackupLatestSymlink)
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}
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}
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}
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return nil
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return nil
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}
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}
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@ -497,7 +508,7 @@ func (s *script) pruneOldBackups() error {
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)
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)
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}
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}
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if fi.ModTime().Before(deadline) {
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if fi.Mode() != os.ModeSymlink && fi.ModTime().Before(deadline) {
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matches = append(matches, candidate)
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matches = append(matches, candidate)
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}
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}
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}
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}
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@ -24,6 +24,7 @@ services:
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AWS_ENDPOINT_PROTO: http
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AWS_ENDPOINT_PROTO: http
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AWS_S3_BUCKET_NAME: backup
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AWS_S3_BUCKET_NAME: backup
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BACKUP_FILENAME: test.tar.gz
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BACKUP_FILENAME: test.tar.gz
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BACKUP_LATEST_SYMLINK: test.latest.tar.gz.gpg
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BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
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BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
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BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
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BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
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BACKUP_PRUNING_LEEWAY: 5s
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BACKUP_PRUNING_LEEWAY: 5s
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@ -18,6 +18,7 @@ docker run --rm -it \
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echo "[TEST:PASS] Found relevant files in untared remote backup."
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echo "[TEST:PASS] Found relevant files in untared remote backup."
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test -L ./local/test.latest.tar.gz.gpg
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echo 1234secret | gpg -d --yes --passphrase-fd 0 ./local/test.tar.gz.gpg > ./local/decrypted.tar.gz
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echo 1234secret | gpg -d --yes --passphrase-fd 0 ./local/test.tar.gz.gpg > ./local/decrypted.tar.gz
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tar -xf ./local/decrypted.tar.gz -C /tmp && test -f /tmp/backup/app_data/offen.db
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tar -xf ./local/decrypted.tar.gz -C /tmp && test -f /tmp/backup/app_data/offen.db
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rm ./local/decrypted.tar.gz
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rm ./local/decrypted.tar.gz
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