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Chapter 4
Using the Peripheral Status Monitor
Configuring MC/ServiceGuard Package Dependencies with the PSM
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Configuring Package Dependencies using SAM
The procedure assumes you have taken the necessary steps to create the package to which you will be adding
resource dependencies. Complete instructions for configuring MC/ServiceGuard clusters and packages are
provided in Managing MC/ServiceGuard.
To create a package resource dependency:
1. From the command line, start the graphical version of SAM by typing: sam
2. Double-click the Clusters icon.
3. Double-click the High Availability Clusters icon.
4. Double-click on the Package Configuration icon.
The High Availability Clusters screen is displayed showing all requests configured on that system.
5. From the Actions menu, select either Create/Add a Package or Modify Package Configuration.
Depending on which option you selected, the Create/Add Package screen is displayed or the Modify
Package screen is displayed.
6. If you have not yet done so, specify a Package Name and Node and Specify a Package SUBNET Address.
Then click on “Specify Package Resource Dependencies…” to add PSM resources as package
dependencies. The Package Resource Dependencies screen is displayed.
7. To make a package dependent on an EMS HA Monitors resource, click Add Resource. The Add Resources
screen is displayed listing all the installed resources discovered by MC/ServiceGuard. The resource
classes used for PSM monitoring are adapters, connectivity, storage, and system.
8. Double-click on the appropriate PSM resource class, then on the status class, then on the remaining
resource subclasses until the PSM monitor instances are displayed in the Resource Names list. Select
the desired PSM resource and click OK. A Resource Parameters screen is displayed
9. Enter an appropriate Resource Polling Interval value. This value determines how often EMS checks
the PSM for changes in status. The value you select for polling should be related to how critical the
resource is to system operation. You may want to use a short polling interval for critical resources, and a
longer interval for non-critical resources. Be aware that polling can impact system performance, so avoid
using a short polling interval for all resources.
10. Select UP from the list of Available Resource Values, then click < — Add — .
11. Click OK to add the package dependency.
Package failover will now occur if the status of the resource changes from UP.