Changing TC/SSP Information

When installing Sun Cluster software, information about the Terminal Concentrator (TC) or a System Service Processor (SSP) is required. This information is stored in the cluster configuration database (CCD).

This information is used to:

• Forcibly terminate hung nodes (as in failure fencing)

• Implement a cluster-wide locking mechanism which prevents partitioned nodes from joining the cluster

Both these mechanisms serve to protect data integrity in the case of four-node clusters with directly attached storage devices.

Use the scconf(1M) command to change the TC or SSP information associated with a particular node, as described in the following procedures.

For more information about installing and configuring the TC or SSP, see the terminal concentrator chapter in the Sun Cluster 2.2 Hardware Site Preparation, Planning, and Installation Guide.

How to Change TC/SSP Information

To change TC or SSP information, run the scconf(1M) command on all cluster nodes. For each node, supply the appropriate new information. The following examples show scconf(1M) command syntax for each type of information change.

1. Node architecture type and IP address - Supply the cluster name, the host name, the new architecture type, and the new IP address.

   # scconf clustername -H hostname -d E10000 -t new_ip_address

   ---

   Note -

   Multiple hosts may be connected to the same TC; the -H option affects only the information associated with the host you specify in the command line.

   ---

2. Password for a TC or SSP - Supply the cluster name, the IP address, and the new password.

   # scconf clustername -t ip_address -P ip_address (129.34.123.51) Password:

3. Port number for an SSP console - Supply the cluster name, host name, and new port number.

   • If a Terminal Concentrator is being used, specify an unused TC port from 1 to N.

   • If an SSP is being used, a value of -1 must be specified.

   # scconf clustername -H hostname -p new_port_number

4. TC name or IP address - Supply the cluster name, host name, and new TC name or IP address.

   # scconf clustername -H hostname -t new_tc_name|new_ip_address

For additional information about changing TC or SSP information, see the scconf(1M) man page and Chapter 8, Administering the Terminal Concentrator.