Bringing the Cluster Online

After the basic configuration, you can bring the stack online and check the status.

  1. Run the following command on each of the cluster nodes to start OpenAIS:

    rcopenais start
  2. On one of the nodes, check the cluster status with the following command:

    crm_mon

    If all nodes are online, the output should be similar to the following:

    ============
    Last updated: Thu Feb  5 18:30:33 2009
    Current DC: d42 (d42)
    Version: 1.0.1-node: b7ffe2729e3003ac8ff740bebc003cf237dfa854
    3 Nodes configured.
    0 Resources configured.
    ============
         
    Node: d230 (d230): online
    Node: d42 (d42): online
    Node: e246 (e246): online

After the basic configuration is done and the nodes are online, you can now start to configure cluster resources, either with the crm command line tool or with a graphical user interface. For more information, refer to Chapter 4, Configuring Cluster Resources with the GUI or Chapter 5, Configuring Cluster Resources From Command Line.