Red Hat ENTERPRISE LINUX 4 - ADMINISTRATION Manual

Also see for ENTERPRISE LINUX 4 - DEVELOPER TOOLS GUIDE: Installation guide Installation guide Tuning guide Installation guide Manual

Contents

Chapter 3. Configuring Red Hat Cluster With Conga26A progress page shows the progress of those actions for each node in the cluster.When the process of creating a new cluster is complete, a page is displayed providing aconfiguration interface for the newly created cluster.3.4. Global Cluster PropertiesWhen a cluster is created, or if you select a cluster to configure, a cluster-specific page is displayed.The page provides an interface for configuring cluster-wide properties and detailed properties.You can configure cluster-wide properties with the tabbed interface below the cluster name. Theinterface provides the following tabs: General, GULM (GULM clusters only), Fence (DLM clustersonly), Multicast (DLM clusters only), and Quorum Partition (DLM clusters only). To configure theparameters in those tabs, follow the steps in this section. If you do not need to configure parameters ina tab, skip the step for that tab.1. General tab — This tab displays cluster name and provides an interface for configuring theconfiguration version and advanced cluster properties. The parameters are summarized asfollows:• The Cluster Name text box displays the cluster name; it does not accept a cluster namechange. You cannot change the cluster name. The only way to change the name of a Red Hatcluster is to create a new cluster configuration with the new name.• The Configuration Version value is set to 1 by default and is automatically incremented eachtime you modify your cluster configuration. However, if you need to set it to another value, youcan specify it at the Configuration Version text box.• You can enter advanced cluster properties by clicking Show advanced cluster properties.Clicking Show advanced cluster properties reveals a list of advanced properties. You canclick any advanced property for online help about the property.Enter the values required and click Apply for changes to take effect.2. Fence tab (DLM clusters only) — This tab provides an interface for configuring these FenceDaemon Properties parameters: Post-Fail Delay and Post-Join Delay. The parameters aresummarized as follows:• The Post-Fail Delay parameter is the number of seconds the fence daemon (fenced) waitsbefore fencing a node (a member of the fence domain) after the node has failed. The Post-FailDelay default value is 0. Its value may be varied to suit cluster and network performance.• The Post-Join Delay parameter is the number of seconds the fence daemon (fenced) waitsbefore fencing a node after the node joins the fence domain. The Post-Join Delay defaultvalue is 3. A typical setting for Post-Join Delay is between 20 and 30 seconds, but can varyaccording to cluster and network performance.Enter values required and Click Apply for changes to take effect.NoteFor more information about Post-Join Delay and Post-Fail Delay, refer to thefenced(8) man page.