How to Reboot a Cluster

Run the scshutdown(1M) command to shut down the cluster, then boot the cluster with the boot(1M) command on each node.

1. (Optional). For a cluster that is running Oracle Parallel Server/Real Application Clusters, shut down all instances of the database.

   Refer to the Oracle Parallel Server/Real Application Clusters product documentation for shutdown procedures.

2. Become superuser on any node in the cluster.

3. Shut down the cluster to OBP.

   From a single node in the cluster, type the following command.

   # scshutdown -g0 -y

   Each node is shut down to the ok prompt.

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   Note –

   Cluster nodes must have a working connection to the cluster interconnect to attain cluster membership.

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4. Boot each node.

   The order in which the nodes are booted does not matter unless you make configuration changes between shutdowns. If you make configuration changes between shutdowns, start the node with the most current configuration first.

   ok boot

   Messages appear on the booted nodes' consoles as cluster components are activated.

5. Verify that the nodes booted without error and are online.

   The scstat command reports the nodes' status.

   # scstat -n

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   Note –

   If a cluster node's /var file system fills up, Sun Cluster might not be able to restart on that node. If this problem arises, see How to Repair a Full /var File System.

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Example—Rebooting a Cluster

The following example shows the console output when stopping normal cluster operation, bringing down all nodes to the ok prompt, then restarting the cluster. The -g 0 option sets the grace period to zero, -y provides an automatic yes response to the confirmation question. Shutdown messages also appear on the consoles of other nodes in the cluster.

# scshutdown -g0 -y
May 2 10:08:46 phys-schost-1 cl_runtime: WARNING: CMM monitoring disabled.
phys-schost-1# 
INIT: New run level: 0
The system is coming down.  Please wait.
...
The system is down.
syncing file systems... done
Program terminated
ok boot
Rebooting with command: boot 
...
Hostname: phys-schost-1
Booting as part of a cluster
...
NOTICE: Node 1: attempting to join cluster
...
NOTICE: Node 2 (incarnation # 937690106) has become reachable.
NOTICE: Node 3 (incarnation # 937690290) has become reachable.
NOTICE: cluster has reached quorum.
...
NOTICE: Cluster members:   1  2  3
...
NOTICE: Node 1: joined cluster
...
The system is coming up.  Please wait.
checking ufs filesystems
...
reservation program successfully exiting
Print services started.
volume management starting.
The system is ready.
phys-schost-1 console login:
NOTICE: Node 1: joined cluster
...
The system is coming up.  Please wait.
checking ufs filesystems
...
reservation program successfully exiting
Print services started.
volume management starting.
The system is ready.
phys-schost-1 console login: