Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP A.11.00
Table 7 Additional validation of Site Controller packages (continued)
Checks whether the site values in this
package are the sites that are
configured in the cluster configuration.
cmapplyconf
# cmapplyconf -P
<Metrocluster_pkg.conf>
Check if the Site values are valid
cmcheckconf [-P/-p]
# cmcheckconf -P
<Metrocluster_pkg.conf>
# cmcheckconf -p
<Metrocluster_pkg.conf>
Checks whether the Site Controller EMS
resource dependency is configured on
cmapplyconf
# cmapplyconf -P
<Metrocluster_pkg.conf>
Verify whether the Site Safety Latch
dependencies are configured properly
for a complex workload all the packages that are the foremost
predecessors in the dependency order
cmcheckconf [-P/-p]
among the packages that are
configured to be managed by the Site
Controller Package on both sites.
# cmcheckconf -P
<Metrocluster_pkg.conf>
# cmcheckconf -p
<Metrocluster_pkg.conf>
NOTE: The checks and validations mentioned in “Validating Metrocluster package” (page 52)
is not applicable for legacy packages. HP recommends that you add the location of the package
environment file available in the Metrocluster package or the Site Controller package directory to
the list of files in /etc/cmcluster/cmfiles2check.
Rolling upgrade for Metrocluster
Rolling Upgrade allows you to upgrade the software components of the cluster with minimal
downtime to the applications managed by Metrocluster. See Rolling upgrade for the procedure.
Live Application Detach
There may be circumstances in which you want to do maintenance that involves halting a node,
or the entire cluster, without halting or failing over the affected packages. Such maintenance might
consist of anything short of rebooting the node or nodes, but a likely case is networking changes
that will disrupt the heartbeat. New command options in Serviceguard A.11.20 (collectively known
as Live Application Detach (LAD)) allows you to do this kind of maintenance while keeping the
packages running. The packages are no longer monitored by Serviceguard, but the applications
continue to run. Packages in this state are called detached packages. When you have done the
necessary maintenance, you can restart the node or cluster, and normal monitoring will resume
on the packages. For more information on the LAD feature, see Managing Serviceguard A.11.20
available at http://www.hp.com/go/hpux-serviceguard-docs —> HP Serviceguard.
NOTE: Live Application Detach feature is not supported in SADTA environment.
HP vPars and HP Integrity VM
Configuring virtual machine using HP Integrity Virtual Machines (VM) or HP-UX Virtual Partitions
(vPars 6) as a package (also for as a node) in Metrocluster or Continentalclusters provides remote
data protection of applications running inside the virtual machine. In addition, it simplifies the
geographical movement of the virtual machine from one site to another in case of site outages and
it ensures high availability of the virtual machine within the site.
Configuring virtual machine Integrity VM or vPars 6 as a node in Metrocluster or Continentalclusters
within the VM guest provides remote data protection of applications running inside the virtual
machine. It also helps in consolidation of physical hosts.
54 Metrocluster features