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sh.addShardTag()

sh.addShardTag(shard, tag)

New in version 2.2.

Parameters:
  • shard (string) – Specifies the name of the shard that you want to give a specific tag.
  • tag (string) – Specifies the name of the tag that you want to add to the shard.

sh.addShardTag() associates a shard with a tag or identifier. MongoDB uses these identifiers to direct chunks that fall within a tagged range to specific shards.

sh.addTagRange() associates chunk ranges with tag ranges.

Always issue sh.addShardTag() when connected to a mongos instance.

Example

The following example adds three tags, NYC, LAX, and NRT, to three shards:

sh.addShardTag("shard0000", "NYC")
sh.addShardTag("shard0001", "LAX")
sh.addShardTag("shard0002", "NRT")