This is a master issue to track things that we need to do to make cluster management easier.
- Introduce a new mode to disallow creation of collections by configuration and use the collection API instead
- New addReplica API to add a replica to a collection/shard
- New modifyCollection API to change replicationFactor, maxShardsPerNode configurations
- Update Solr Admin UI for the new APIs
- Longer term, optionally enforce the replicationFactor to add/remove nodes automatically
Some features have already been committed as part of other issues: