Automatic rebalancing

Automatic rebalancing is the process of rebalancing the replicas from currently active nodes to newly added ones.

Now, let's take the cluster from the previous section, which had five active nodes and one dead node. In this section, we are going to observe how data is rebalanced once we add a new node to a cluster. The following screenshot shows the node replication status:

Figure 5.8 – Overview dashboard showing Node Status and Replication Status

In this cluster of five active nodes, let's add two more nodes as follows:

$ cockroach start \
--insecure \
--store=fault-node5 \
--listen-addr=localhost:26261 \
--http-addr=localhost:8084 \
--join=localhost:26257,localhost:26258,localhost:26259 \
--background
cockroach start \
--insecure \
--store=fault-node7 \
--listen-addr=localhost:26263 \
--http-addr=localhost:8086 \
--join=localhost:26257,localhost:26258,localhost:26259 \
--background

After some time, you should...