Understanding the configuration process

The procedures in this chapter instruct you to create temporary variables that are used as building blocks, to construct Control Center configuration variables accurately. You append the Control Center variables to /etc/default/serviced, and then edit the file to move the variables to more appropriate locations.

The most important temporary variables specify the IP address or hostname of each host in the ZooKeeper ensemble. The following table identifies these important variables, the names and values of which must be identical on every Control Center host.

Variable name Placeholder value Actual value
node1 HA-Virtual-IP or HA-Virtual-Name Virtual IP address or hostname of the high-availability cluster
node2 Delegate-A IP address or hostname of delegate host A
node3 Delegate-B IP address or hostname of delegate host B