3.14.1 How to Adjust Cluster Timeouts

1. Adjust the cluster reconfiguration timeouts by using the scconf -T command.

   For example, to change the configurable transition step timeout values to 500 seconds, you would run the following command on all cluster nodes.

   # scconf clustername -T 500

   The default values for these steps are 720 seconds. Use the ssconf -p command to see the current timeout values.

   If there is insufficient time to master all the logical hosts in these steps, error messages are printed on the cluster console.

   Within the reconfiguration steps, the time taken to master a single logical host can vary depending on how many data services are configured on each logical host. If there is insufficient time to master a logical host--if the loghost_timeout parameter is too small--messages similar to the following appear on the console:

   ID[SUNWcluster.ccd.ccdd.5001]: error freeze cmd = command /opt/SUNWcluster/bin/loghost_sync timed out.

   In this example, the cluster framework makes a "best effort" to bring the system to a consistent state by attempting to give up the logical host. If this is not successful, the node may abort out of the cluster to prevent inconsistencies.

2. Use the scconf -l option to adjust the loghost_timeout parameter.

   The default is 180 seconds.

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   Note -

   The reconfiguration step timeouts can never be less than the loghost_timeout value. Otherwise, an error results and the cluster configuration file is not modified. This requirement is verified by the scconf -T or scconf -l options. A warning is printed if either of these timeouts is set to 100 seconds or less.

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