Before adding a node to a cluster
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Before adding a node to a cluster

Before preparing to add the node to an existing cluster, perform the required preparations.

To verify hardware and software requirements are met

  1. Review the hardware and software requirements.

    See Assessing the system for installation readiness.

  2. Verify the new system has the same identical operating system versions and patch levels as that of the existing cluster
  3. Verify the existing cluster is running SFCFSHA 6.0 on all nodes.
  4. If the cluster is upgraded from a previous version, you must check the cluster protocol version to make sure it has the same version as the node to be added. If there is a protocol mismatch, the node is unable to join the existing cluster.

    Check the cluster protocal version using:

    # vxdctl protocolversion
Cluster running at protocol 110
  5. If the cluster protocol is below 110, upgrade it on the master node using:
    # vxdctl upgrade [version]

Before you configure a new system on an existing cluster, you must physically add the system to the cluster as illustrated in Figure: Adding a node to a two-node cluster using two switches.

Figure: Adding a node to a two-node cluster using two switches

Adding a node to a two-node cluster using two switches

To set up the hardware

  1. Connect the SFCFSHA private Ethernet controllers.

    • When you add nodes to a cluster, use independent switches or hubs for the private network connections. You can only use crossover cables for a two-node cluster, so you might have to swap out the cable for a switch or hub.

    • If you already use independent hubs, connect the two Ethernet controllers on the new node to the independent hubs.

    Figure: Adding a node to a two-node cluster using two switches illustrates a new node being added to an existing two-node cluster using two independent hubs.

  2. Connect the system to the shared storage as required. Make sure that you meet the following requirements:

    • The new node must be connected to the same shared storage devices as the existing nodes.

    • The node must have private network connections to two independent switches for the cluster.

    • The network interface names used for the private interconnects on the new node must be the same as that of the existing nodes in the cluster.

Prepare the new node before you add it to an existing cluster.

To prepare the new node

  1. Verify that the new node meets installation requirements.
    # ./installsfcfsha -precheck

    You can also use the Web-based installer for the precheck.

  2. Install SFCFSHA on the new system using the -install option to install SFCFSHA. Do not configure SFCFSHA when prompted.
  3. You can restart the new node after installation is complete. Configure the new node using the configuration from the existing cluster nodes.

    See About installation and configuration methods.

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