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Backup options

backup:
  priority:
    "localhost:28019": 2.5
    "localhost:27018": 2.5
    "localhost:27020": 2.0
    "localhost:27017": 0.1
  compression: <string>
  compressionLevel: <int>
  timeouts:
    startingStatus: 60

priority

Type: array of strings

The list of mongod nodes and their priority for making backups. The node with the highest priority is elected for making a backup. If several nodes have the same priority, the one among them is randomly elected to make a backup.

If not set, the replica set nodes have the default priority as follows:

  • hidden nodes - 2.0
  • secondary nodes - 1.0
  • primary node - 0.5

backup.compression

Type: string
Default: s2

The compression method for backup snapshots. Available in Percona Backup for MongoDB as of version 1.8.0.

When none is specified, backups are made without compression.

Supported values: gzip, snappy, lz4, s2, pgzip, zstd. Default: s2.

backup.compressionLevel

Type: int

The compression level. The default value depends on the compression method used.

The following table shows available compression levels per compression method:

Compression method Supported compression levels Default
zstd 1 - fastest speed, 2 - default, 3 - better compression, 4 - best compression 2
snappy no levels
lz4 From 1 (fastest) to 16 1
gzip and pgzip -1 - default compression, 0 - no compression, 1 - best speed, 9 - best compression -1

Note that the greater value you specify, the more time and computing resources it will take to compress the data.

backup.timeouts.startingStatus

Type: unit32
Default: 33

The wait time (in seconds) for PBM to start physical backups on all shards. Increasing this value is useful when it takes longer than usual to open the $backupCursor.

The 0 (zero) value resets the timeout to the default 33 seconds.

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Last update: December 21, 2023
Created: December 21, 2023