Adding a CLDB Role Using the CLI

Describes how to add a CLDB role to an HPE Ezmeral Data Fabric node using the CLI.

About this task

Complete the following steps to add the CLDB role to a node in the cluster:

Adding a CLDB Role to a Node on a Nonsecure Cluster

Procedure

  1. Install the CLDB package, mapr-cldb, on the node by using apt-get, yum, or zypper commands, depending on your operating system.
  2. Run configure.sh with the -C and -R options on the node where you added the new CLDB role.
    Use the -C option to provide the list of CLDB nodes. If Warden is running, the CLDB service starts automatically.
  3. Run configure.sh with the -R options on all other nodes in the cluster.
    Use the -C option and provide the list of CLDB nodes, including the new node.
  4. Verify that the node has a CLDB role by running the following command: 
    maprcli node listcldbs
    The output should show all the CLDB nodes, including the node where the role was added.

Adding a CLDB Role to a Node on a Secure Cluster

Procedure

  1. Install the CLDB package, mapr-cldb, on the node by using apt-get, yum, or zypper commands, depending on your operating system.
  2. Copy the following files from the /opt/mapr/conf directory on any existing CLDB node on the cluster to the /opt/mapr/conf directory on this node.
    • cldb.key
    • dare.master.key
    • maprserverticket
    • ssl_keystore
    • ssl_keystore.p12
    • ssl_keystore.pem
    • ssl_truststore
    • ssl_truststore.p12
    • ssl_truststore.pem
    NOTE This dare.master.key is present only if the cluster is enabled for encryption of data at rest.
  3. Run configure.sh with the following options on the node where you added the new CLDB role.
    • -secure: Use this option to enable the node for security.
    • -C: Use this option to include this node in the list of CLDB nodes. If Warden is running, the CLDB service starts automatically.
    • -dare: Use this option only if the cluster is enabled for data at rest encryption. Do not specify this if the cluster is not enabled for data at rest encryption.
    • Use one of the following to configure the list of ZooKeeper nodes:
      • -R: Use this option if the node is an existing cluster node. This option uses the previously configured list of ZooKeeper nodes. When -R is specified, the ZooKeeper credentials are read from warden.conf file.
      • -Z: Use this option if the node is a new node on the cluster. This option specifies the list of ZooKeeper nodes.
  4. Run configure.sh with the following options on all other nodes in the cluster.
    • -C: Use this option to include the new CLDB node in the list of CLDB nodes.
    • -R: Use this option to use the previously configured list of ZooKeeper nodes.
  5. Verify that the node has a CLDB role by running the following command: 
    maprcli node listcldbs
    The output should show all the CLDB nodes, including the node where the role was added.