Mongo has mostly excellent documentation, yet sometimes it may not be obvious how to do some less-used configuration changes. One of these is a way to rename mongo shards.
Renaming mongo shards can be done in the following way:
- assume you have “non-portable” naming like this – if your server addresses change for some reason, you’re in trouble:
- let’s say you want to rename them to shard0001.example.com, shard0002.example.com, shard0003.example.com:
- The last step is restarting all mongos instances; if possible, also restart mongod instances.