Returns the cluster’s current node (cluster membership) state.
<!ELEMENT cluster (name, epoch, masterNode, nodes) <!ELEMENT name (#CDATA)> <!ELEMENT epoch (#CDATA)> <!ELEMENT masterNode (#CDATA)> <!ELEMENT nodes (node+)> <!ELEMENT node (#CDATA)>
<ncsReply> <cluster> <name>CLUSTER</name> <epoch>0</epoch> <masterNode>NODE2</masterNode> <nodes> <node>NODE2</node> <node>NODE3</node> </nodes> </cluster> </ncsReply>