Glossary | HP HA s Software specs

Glossary

resource instance The actual monitorable resource. For example, /net/ interfaces/lan/status/lan0 may refer to a particular network interface installed on the monitored system.

resource monitor A framework for selecting resources of interest and monitoring them according to the user's criteria. When the resource value matches the user's criteria, a notiﬁcation is sent according to the user's instructions.

The process that is used to obtain the status of a resource and send event notiﬁcations if appropriate. A monitor checks resources on the local system. The resource monitor maps the physical resource into a standard interface understood by the HA subsystem.

S-T

target The target application is notiﬁed when a monitored resource reaches the condition for which notiﬁcation was requested. For example, a target application could be MC/ServiceGuard or IT/Operations (ITO).

U-Z

volume group In LVM, a set of physical volumes whose extents are grouped together and then made available to

users as logical volumes. A volume group can be activated by only one node at a time unless you are using MC/ LockManager. MC/ServiceGuard can activate a volume group when it starts a package. A given disk can belong to only one volume group. A logical volume can belong to only one volume group.

Glossary

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HP HA s Software manual Glossary

Contents

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