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HP EMS HARDWARE S B6191-90028 manual Chapter

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Using the Peripheral Status Monitor

Configuring MC/ServiceGuard Package Dependencies with the PSM

Configuring MC/ServiceGuard Package Dependencies with the PSM

The PSM allows you to create MC/ServiceGuard package dependencies for resources monitored by EMS Hardware Monitors.

To use the PSM with MC/ServiceGuard, you configure one or more of the resource instances available in the PSM as MC/ServiceGuard package dependencies. This creates an EMS monitoring request that monitors the status of the resource and alerts MC/ServiceGuard if the status of the resource changes.

Here are some examples of how PSM monitoring requests might be used:

•In a cluster where one copy of data is shared between all nodes in a cluster, you may want to failover a package if the host adapter has failed on the node running the package. Because buses, controllers, and disks are shared, package failover to another node because of bus, controller, or disk failure would not successfully run the package. To make sure you have proper failover in a shared data environment, you must create identical package dependencies on all nodes in the cluster. MC/ServiceGuard can then compare the resource “UP” values on all nodes and failover to the node that has the correct resources available.

•In a cluster where each node has its own copy of data, you may want to failover a package to another node for a host adapter, bus, controller, or disk failure. In this sort of cluster of web servers, where each node has a copy of the data and users are distributed for load balancing, you can failover a package to another node with the correct resources available. Again, the package resource dependencies should be configured the same on all nodes.

NOTE	You should create the same requests on all nodes in an MC/ServiceGuard cluster.

There are two methods for configuring PSM package dependencies; using SAM, or by editing the package configuration file.

Chapter 4

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HP EMS HARDWARE S B6191-90028 manual Chapter

Contents

Manufacturing Part Number B6191-90028 September EMS Hardware Monitors Users GuideLegal Notices Printing History Page Contents Hardware Monitor Configuration Files Using the Peripheral Status MonitorSpecial Procedures Contents About This Manual Related Web Site Introduction Hardware Monitoring Overview What is Hardware Monitoring?Components Involved in Hardware Monitoring How Does Hardware Monitoring Work?Benefits of Hardware Monitoring Products Supported by Hardware Monitors Tips for Hardware Monitoring Term Definition Hardware Monitoring TermsHardware Monitoring Terms Hardware Monitoring Terms Introduction Hardware Monitoring Overview Chapter Installing and Using Monitors Steps Involved Steps for Installing and Configuring Hardware Monitoring Supported System Configuration Installing EMS Hardware MonitorsRemoving EMS Hardware Monitors Product Model/Product Special Number Requirements Checking for Special RequirementsDisk Arrays Tape Products all supported by the Scsi Tape Devices Monitor Disk ProductsFibre Channel Scsi Multiplexers High Availability Storage SystemsProduct Model/Product Special Requirements Number Fibre Channel AdaptersFibre Channel Arbitrated Loop FC-AL Hub System Fibre Channel SwitchMemory Others Interface CardsSome Monitoring Request Examples Using Hardware Monitoring RequestsWhat Is a Monitoring Request? Building a Monitoring Request To run the Monitoring Request Manager, type Running the Monitoring Request ManagerEnabling Hardware Event Monitoring Severity Levels Notification Method Default Monitoring Requests13 Default Monitoring Requests for Each Monitor To list the descriptions of available monitors Listing Monitor DescriptionsTo view or show the current monitoring requests Viewing Current Monitoring RequestsTo add a monitoring request Adding a Monitoring RequestSetting Description 14 Monitoring Requests Configuration Settings15 Event Severity Levels Event Description MC/ServiceGuard Severity Response LevelEvent Severity Levels Example of Adding a Monitoring Request == ADD Comment To modify a monitoring request Modifying Monitoring RequestsVerifying Hardware Event Monitoring Events = Checking Detailed Monitoring StatusSample Event Message Retrieving and Interpreting Event MessagesTo delete a monitoring request Deleting Monitoring RequestsDisabling Hardware Event Monitoring To disable hardware event monitoringDetailed Description Hardware Monitoring Architecture Detailed Picture of Hardware MonitoringHardware Monitoring Request Manager Components from Three Different ApplicationsStartup Client EMS Hardware Event MonitorPolling or Asynchronous? Peripheral Status Monitor PSM Event Monitoring Service EMSDirectories and Files Description File Locations1File Locations Monitoring Startup Process Startup Process in DetailDisabling Monitoring Event Decoding Asynchronous Event Detection in DetailAsynchronous Event Detection Process Memory Monitor Polling FC-AL Hub and FC Switch Polling ProcessesEvent Polling in Detail Monitoring Polling Process Memory Monitor Polling Process Detailed Picture of Hardware Monitoring Chapter Using the Peripheral Status Monitor Peripheral Status Monitor Overview How Does the PSM Work? Peripheral Status Monitor PSM Status PSM ComponentsPSM States PSM Resource PathsHow Does the PSM Work? Chapter To create a package resource dependency Configuring Package Dependencies using SAMResourcepollinginterval Resourceupvalue =UP From the Actions menu select Add Monitoring Request Creating EMS Monitoring Requests for PSMTo create a PSM monitoring request Determining the Frequency of Events Options Specifying When to Send Event NotifySetting the Polling Interval Polling Interval Monitoring Request ParametersTo set the opcmsg ITO Selecting Protocols for Sending Events Notify ViaOpcmsg ITO Critical Major Minor NormalTo set for email notification To set the Snmp trapTCP and UDP To set the TCP or UDP conditionsAdding a Notification Comment Comment Copying Monitoring Requests To change the monitoring parameters of a request To remove monitoring requests Removing Monitoring RequestsFrom the Actions menu select View Monitoring Request Viewing Monitoring RequestsTo view the parameters for a monitoring request Example 4-1 Example of Using setfixed Using the setfixed Utility to Restore Hardware UP StateTo restore the operating state of a resource to UP Using the Peripheral Status Monitor Hardware Monitor Configuration Files Monitor Configuration Files File Format Monitor Configuration File EntriesSetting Values Description File NamesFrequency must be a Eventnum must be aInterval must be a Polling Interval Sample Global Configuration FileEvent Definition Severity Action= Communication Device Sample Monitor-Specific Configuration File#POLLINTERVAL Startup Configuration File Keyword Values Description Startup Configuration File EntriesUDP Description Entry Default File EntriesDefault Monitoring Requests Peripheral Status Monitor PSM Configuration File Considerations for Modifying the PSM Configuration File Monitorresourcename PSM Configuration File FieldsCritical Downseverityope Example File Entries Special Procedures Fibre Channel Arbitrated Loop Hub Monitor Configuring the FC-AL Monitor Configuration File Initial Monitor ConfigurationAdding or Removing an FC-AL Hub Configuration FilesThis setting is required Setting Default Description ValuePSM Configuration File Fibre Channel Switch Monitor Configuring the FC Switch Monitor Configuration File Adding or Removing an FC SwitchChanging the FC Switch Monitoring Configuration 2PSM Configuration File Fields Special Procedures 112 Index 114 115