Implement high-availability solutions with HP Instant Capacity - easily and effectively

Additional HP Serviceguard scripting considerations

When developing Serviceguard scripts, consider the following:

• Remember that if temporary capacity is being used in the group, it may be necessary to specify –t on the failover

activation command (icapmodify –a or icapmodify -s commands).

• Check if usage rights have been made available even after an attempted rights seizure returns an error such as a

timeout error. The rights seizure could have timed out while the manager was waiting for a response from a target

member, and does not necessarily mean that the rights seizure did not complete independently.

• Check if manual intervention is required. As noted previously, failback with vPars requires a restore operation before

the failed vPars begin the reboot process. Because Serviceguard is started after the initial boot up of the virtual

partition, manual intervention is likely required for this failback case rather than using automated scripts under the

control of Serviceguard.

• Give careful thought to the possibility and consequences of split groups when automating group manager failover

and especially, automated failback to a group manager.

• Note that rights seizure does require root access to the Group Manager system through some mechanism such as

remsh, ssh, or your own secure remote connection.

Resources

For more details about the HP iCAP program, view the iCAP website located at:

hp.com/go/icap

Additional white papers and product documentation, including the user’s guides and release notes, are available at:

hp.com/go/hp-icap-docs

Additional information about high availability, partitioning, HP Matrix Operating Environment , and Integrity servers can

be found at the following websites:

HP high-availability technical documentation

docs.hp.com/en/ha

HP Partitioning Continuum for HP-UX 11i

hp.com/go/partitions

HP Matrix Operating Environment

hp.com/go/vse

HP Integrity systems family

hp.com/go/integrity

For more information

Use HP iCAP clubbed with HP Integrity Superdome and HP-UX to reduce the cost of implementing high-availability

solutions for your mission-critical environments. Visit hp.com/go/icap

Get connected

hp.com/go/getconnected

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4AA3-2259ENW, Created December 2010; Updated July 2012, Rev. 2