CLUSTER ADDSLOTSRANGE start-slot end-slot [start-slot end-slot ...]

The CLUSTER ADDSLOTSRANGE is similar to the CLUSTER ADDSLOTS command in that they both assign hash slots to nodes.

The difference between the two commands is that ADDSLOTS takes a list of slots to assign to the node, while ADDSLOTSRANGE takes a list of slot ranges (specified by start and end slots) to assign to the node.

*Example

To assign slots 1 2 3 4 5 to the node, the ADDSLOTS command is:

> CLUSTER ADDSLOTS 1 2 3 4 5
OK

The same operation can be completed with the following ADDSLOTSRANGE command:

> CLUSTER ADDSLOTSRANGE 1 5
OK

*Usage in Redis Cluster

This command only works in cluster mode and is useful in the following Redis Cluster operations:

  1. To create a new cluster ADDSLOTSRANGE is used in order to initially setup master nodes splitting the available hash slots among them.
  2. In order to fix a broken cluster where certain slots are unassigned.

*Return value

Simple string reply: OK if the command was successful. Otherwise an error is returned.