Notiﬁcation See alert | HP HA s Software specification

Glossary

MIB II (MIB2) A MIB that deﬁnes information about the system, the network interface cards it contains, routing information it contains, the TCP and UDP sockets it contains and their states, and various statistics related to error counts. This MIB is widely adopted and is served by most IP- addressed devices. Most system and network resources managed by EMS HA Monitors are taken from this MIB.

monitor See resource monitor.

N-P

notiﬁcation See alert.

physical extent LVM divides each physical disk into addressed units called physical extents.

physical volume A disk that has been initialized as an LVM disk.

PVG (physical volume group) A grouping of physical devices: host adapters, busses, controllers, or disks, that allow LVM to manage redundant links or mirrored disks and access the redundant hardware when the primary hardware fails.

PV links A method of LVM conﬁguration that allows you to provide redundant SCSI interfaces and buses to

disk arrays, thereby protecting against single points of failure in SCSI cards and cables.

polling The process by which a monitor obtains the most recent status of a resource.

Q-R

registrar The registrar process provides the link between resource status consumers (clients) and resource status providers (resource monitors). The central part of the resource monitor framework which uses the resource dictionary to act as an intermediary between client systems and resource monitors.

resource May be any entity a monitor application developer names. Examples include a network interface, CPU statistics, a MIB object, or a network service.

resource class A category of resources useful during conﬁguration. For example, /net/interfaces/lan/status is provided as a resource class.

resource dictionary A ﬁle describing the hierarchy of resources that can be monitored and the processes that perform the resource monitoring.

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Glossary

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HP HA s Software manual Notiﬁcation See alert

Contents

Using EMS HA Monitors B5735-90001 August Legal Notices Contents Monitoring Cluster Resources Monitoring Network Interfaces Monitoring System Resources TroubleshootingGlossary Contents Printing Date Part Number Edition Printing HistoryB5735-90001 Page Preface PublicationsPage Installing and Using EMS Event Monitoring Services High Availability Monitors What are EMS HA Monitors? Chapter Role of EMS HA Monitors in a High Availability Environment Installing and Removing EMS HA Monitors Installing EMS HA Monitors Removing EMS HA Monitors Status AvailMB Using EMS HA MonitorsEvent Monitoring Service Resource Class Hierarchy Pvpvlink Event Monitoring Service Screen Selecting a Resource to Monitor Screen Using Wildcards Creating a Monitoring Request Monitoring Request Parameters How Do I Tell EMS When to Send Events? What is a Polling Interval? Which Protocols Can I Use to Send Events? What is a Notiﬁcation Comment? Modifying Monitoring Requests Copying Monitoring RequestsRemoving Monitoring Requests Conﬁguring MC/ServiceGuard Package Dependencies Service EMS Package Conﬁguration Screen Package Resource Dependencies Screen Resource Parameters Screen Using EMS HA Monitors Monitoring Disk Resources Monitoring Disk Resources Disk Monitor Reference Disk Monitor Resource Class Hierarchy Physical Volume Summary Interpreting Physical Volume Summary Disk Monitor Reference Physical Volume and Physical Volume Link Status Interpreting Physical Volume and Physical Volume Link Status Logical Volume Summary Interpreting Logical Volume Summary Logical volume is inactive Logical Volume StatusInterpreting Logical Volume Status Logical volume is DOWN, a complete copy of the data is not Logical Volume Number of Copies Interpreting Logical Volume Copies Rules for Using the EMS Disk Monitor with MC/ServiceGuard Rules for Using the EMS Disk Monitor with MC/ServiceGuard Rules for RAID Arrays Pvsummary Calculations Case Conclusion State Creating Volume Groups on Disk Arrays Using PV Links Adding PVGs to Existing Volume Groups # mkdir /dev/vgdatabase Creating Logical Volumes Rules for Mirrored Individual Disks Creating Disk Monitoring Requests Disk Monitoring Request Suggestions Parameters When Disks Fail Resources to Monitor for RAID Arrays RAID Array Example Pvgup Return Resources to Monitor for Mirrored Disks Mirrored Disks Example Monitoring Parameters Resource Notify Condition Option Number Pvsummary Valid Meaning Value Devices Resources to Monitor for Lock DisksExample for Interpreting the pvsummary for Mirrored Disks Resource Monitoring Parameters Notify Condition Option Resources to Monitor for Root Volumes Monitoring Cluster Resources Cluster Monitor Resource Class Hierarchy Cluster Monitor ReferenceCluster Cluster Status Interpreting Custer Status Node Status Interpreting Node Status Package Status Interpreting Package Status Creating Cluster Monitoring Requests Monitoring Network Interfaces Network Monitor Resource Class Hierarchy Network Monitor ReferenceInterpreting LAN Interface Status Chapter 30 sec Net/interfaces/lan/status/LANname When value isConﬁguring Network Monitoring Requests Hour Monitoring System Resources System Monitor Reference System Resource Monitor Class Hierarchy Interpreting Number of Users Number of UsersResource Name Value Range Interpretation Interpreting Job Queues Job QueuesResource Name Value Interpretation Range Filesystem Available Space Filesystem Available SpaceResource Name Creating System Resource Monitoring Requests 6Troubleshooting EMS Directories and Files Etc/opt/resmon/log Logging and tracing EMS Logging EMS Tracing Network Performance Issues System Performance IssuesPerformance Considerations Testing Cluster Monitor Requests Testing Monitor RequestsTesting Disk Monitor Requests Testing Network Monitor Requests Making Sure Monitors are Running Glossary Notiﬁcation See alert Glossary Glossary Index Index Index