Specifying a Quorum Server | HP Serviceguard specification

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

Contents

Arbitration For Data Integrity Serviceguard Clusters Manufacturing Part Number B3936-90078 July Legal Notices Arbitration for Data Integrity in Serviceguard Clusters Cluster Membership Concepts Membership Cluster Membership Concepts Quorum Split-Brain Tie-Breaking No Arbitration-Multiple Paths To Arbitrate or Not to ArbitrateMultiple Heartbeat Failures No Arbitration-Multiple Media Single Node Failure Multiple Paths with Different Media Additional Multiple Paths with Different Media No 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 Operation Single Cluster Lock Dual Cluster Lock Use of a Lock LUN as the Cluster Lock Oot Irror Lock LUN Operation Use of a Quorum Server as the Cluster Lock Quorum Server Operation Setting up the Quorum Server Running the Quorum Server Specifying a Quorum Server Quorum Server Status and State Viewing Quorum Server Status and State Viewing Quorum Server System Data Use of Arbitrator Nodes Use of Arbitrator Node Extended Distance Clusters Arbitration in Disaster-Tolerant ClustersMetropolitan Clusters Arbitrator Nodes Quorum Server Continental Clusters Use of Dual Lock Disks in Extended Distance Clusters Disk 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