How to Perform Postinstallation Setup and Configure Quorum Devices

Perform this procedure one time only, after the cluster is fully formed. Use this procedure to assign quorum votes and then to remove the cluster from installation mode.

You do not need to configure quorum devices in the following circumstances:

• You chose automatic quorum configuration during Sun Cluster software configuration.

• You used SunPlex Manager to install the cluster. SunPlex Manager assigns quorum votes and removes the cluster from installation mode for you.

• You installed a single-node cluster.

• You added a node to an existing cluster and already have sufficient quorum votes assigned.

Instead, proceed to How to Verify the Quorum Configuration and Installation Mode.

1. From one node, verify that all nodes have joined the cluster.

   Run the scstat(1M) command to display a list of the cluster nodes. You do not need to be logged in as superuser to run this command.

   % scstat -n

   Output resembles the following.

   -- Cluster Nodes -- Node name Status --------- ------ Cluster node: phys-schost-1 Online Cluster node: phys-schost-2 Online

2. On each node, verify device connectivity to the cluster nodes.

   Run the scdidadm(1M) command to display a list of all the devices that the system checks. You do not need to be logged in as superuser to run this command.

   % scdidadm -L

   The list on each node should be the same. Output resembles the following:

   1 phys-schost-1:/dev/rdsk/c0t0d0 /dev/did/rdsk/d1 2 phys-schost-1:/dev/rdsk/c1t1d0 /dev/did/rdsk/d2 2 phys-schost-2:/dev/rdsk/c1t1d0 /dev/did/rdsk/d2 3 phys-schost-1:/dev/rdsk/c1t2d0 /dev/did/rdsk/d3 3 phys-schost-2:/dev/rdsk/c1t2d0 /dev/did/rdsk/d3 …

3. Are you adding a new node to an existing cluster?

   • If no, proceed to Step 4.

   • If yes, you might need to update the quorum configuration to accommodate your cluster's new configuration.

     See “Quorum Devices” in Sun Cluster Overview for Solaris OS and Sun Cluster Concepts Guide for Solaris OS for information about quorum. To change the quorum configuration, follow procedures in “Administering Quorum” in Sun Cluster System Administration Guide for Solaris OS. When the quorum configuration is satisfactory, go to How to Verify the Quorum Configuration and Installation Mode.

4. Determine the global device-ID name of each shared disk that you are configuring as a quorum device.

   Use the scdidadm output from Step 2 to identify the device–ID name of each shared disk that you are configuring as a quorum device. For example, the output in Step 2 shows that global device d2 is shared by phys-schost-1 and phys-schost-2. You use this information in Step 7.

   See Quorum Devices for further information about choosing quorum devices.

5. Become superuser on one node of the cluster.

6. Start the scsetup(1M) utility.

   # scsetup

   The Initial Cluster Setup screen is displayed.

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   Note –

   If the Main Menu is displayed instead, initial cluster setup was already successfully performed. Skip to Step 9.

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   Tip –

   If the quorum setup process is interrupted or fails to be completed successfully, rerun scsetup.

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7. At the prompt Do you want to add any quorum disks?, type Yes if your cluster is a two-node cluster. Configure at least one shared quorum device.

   If your cluster has three or more nodes, quorum device configuration is optional.

8. At the prompt Is it okay to reset "installmode"?, type Yes.

   After the scsetup utility sets the quorum configurations and vote counts for the cluster, the message Cluster initialization is complete is displayed. The utility returns you to the Main Menu.

9. Quit the scsetup utility.

10. Verify the quorum configuration and that installation mode is disabled.

    Go to How to Verify the Quorum Configuration and Installation Mode.