HP Serviceguard manual Specifying a Quorum Server, Quorum Server Status and State

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Arbitration for Data Integrity in Serviceguard Clusters

Use of a Quorum Server as the Cluster Lock

Specifying a Quorum Server

If you will be using a quorum server, be sure to specify the -q qshost option with the cmquerycl command. Example:

#cmquerycl -v -n lp1 -n lp2 -q lp-qs -C clus-lp.config

Quorum Server Status and State

The status of the quorum server can be one of the following:

•Up. The quorum server is active.

•Down. The quorum server is not active.

The state of the quorum server can be one of the following:

•Running. Quorum services are active and available.

•Unsupported Version. There is a version mismatch between Serviceguard and Quorum Server.

•Access Denied. The Serviceguard node is not authorized to access the quorum server system.

•Unknown. Serviceguard cannot determine whether the quorum server is up or down. This may happen when the quorum server cannot be reached from the current node.

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Contents Arbitration For Data Integrity Serviceguard Clusters Manufacturing Part Number B3936-90078 JulyLegal Notices Arbitration for Data Integrity in Serviceguard Clusters Cluster Membership Concepts MembershipCluster Membership Concepts Quorum Split-BrainTie-Breaking No Arbitration-Multiple Paths To Arbitrate or Not to ArbitrateMultiple Heartbeat Failures No Arbitration-Multiple Media Single Node FailureMultiple Paths with Different Media Additional Multiple Paths with Different MediaNo Arbitration-Risks Cluster Startup How Serviceguard Uses ArbitrationStartup and Re-Formation Cluster Quorum and Cluster Locking Dynamic Cluster Re-FormationCluster Lock No Cluster Lock Lock Requirements Use of a Lock Disk as the Cluster Lock Lock Disk OperationSingle Cluster Lock Dual Cluster LockUse of a Lock LUN as the Cluster Lock Oot Irror Lock LUN OperationUse of a Quorum Server as the Cluster Lock Quorum Server OperationSetting up the Quorum Server Running the Quorum ServerSpecifying a Quorum Server Quorum Server Status and StateViewing Quorum Server Status and State Viewing Quorum Server System DataUse of Arbitrator Nodes Use of Arbitrator NodeExtended Distance Clusters Arbitration in Disaster-Tolerant ClustersMetropolitan Clusters Arbitrator Nodes Quorum ServerContinental Clusters Use of Dual Lock Disks in Extended Distance ClustersDisk area is not mirrored Arbitration for Data Integrity in Serviceguard Clusters Summary Arbitration Advantages Disadvantages ModeComparison of Different Arbitration Methods Arbitration for Data Integrity in Serviceguard Clusters Summary

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