Removing a CLDB Role

About this task

The following steps describe how to remove the CLDB role from a node:

Procedure

  1. If you have only one CLDB node in the cluster, add the CLDB role to another node.
    When failover occurs after removal of the CLDB node, the new CLDB node becomes the master CLDB.
  2. Issue the following command to stop the CLDB service on the node: 
    maprcli node services -name cldb -action stop -nodes mapr-<node>
  3. Purge the CLDB package mapr-cldb with the apt-get, yum, or zypper commands, depending on your operating system.
  4. Run configure.sh -C on the node where you removed the role.
    Using the -C option to provide the list of CLDB nodes that excludes the node where you removed the role.
  5. Run configure.sh -C on all other nodes in the cluster.
    Using the -C option to provide the list of CLDB nodes that excludes the node where you removed the role.
  6. Start or restart Warden on the node where you removed the CLDB role.
  7. Perform a rolling restart of Warden on all other nodes.