HP Serviceguard manual Setting up the Quorum Server, Running the Quorum Server

NOTE

NOTE

Arbitration for Data Integrity in Serviceguard Clusters

Use of a Quorum Server as the Cluster Lock

The quorum server runs on a Linux or HP-UX system.You can configure the quorum server as a Serviceguard package in another cluster; it must be a cluster other than the one for which it is providing quorum services. A quorum server, whether or not it is running as a package, can provide quorum services for multiple clusters.

Consult your Configuration Guide for up-to-the-minute information on types of supported quorum server configuration, as well as on support of quorum server as a package.

Setting up the Quorum Server

If you are using a quorum server (QS), the QS software, which has to be running during cluster configuration, must be installed on a system other than the nodes on which your cluster will be running. This can be either a single HP-UX or Linux system.

On HP-UX, the use of Auto Port Aggregation in LAN_MONITOR mode is recommended for the quorum server system. In Linux, channel bonding can be employed.

Ensure that the connection with each node is independent of the heartbeat connection, so that both are not likely to fail at the same time.

Running the Quorum Server

The quorum server must be running during the following cluster operations:

•when the cmquerycl command is issued.

•when the cmapplyconf command is issued.

•when there is a cluster re-formation.

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