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Chapter 3. Configuring Fencing with Conga
This chapter describes how to configure fencing in Red Hat High Availability Add-On using Conga.
Note
Conga is a graphical user interface that you can use to administer the Red Hat High Availability Add-On. Note, however, that in order to use this interface effectively you need to have a good and clear understanding of the underlying concepts. Learning about cluster configuration by exploring the available features in the user interface is not recommended, as it may result in a system that is not robust enough to keep all services running when components fail.
3.1. Configuring Fence Daemon Properties
Clicking on the tab displays the page, which provides an interface for configuring and . The values you configure for these parameters are general fencing properties for the cluster. To configure specific fence devices for the nodes of the cluster, use the menu item of the cluster display, as described in Section 3.2, “Configuring Fence Devices”.
- The parameter is the number of seconds the fence daemon (
fenced) waits before fencing a node (a member of the fence domain) after the node has failed. The default value is0. Its value may be varied to suit cluster and network performance. - The parameter is the number of seconds the fence daemon (
fenced) waits before fencing a node after the node joins the fence domain. The default value is6. A typical setting for is between 20 and 30 seconds, but can vary according to cluster and network performance.
Enter the values required and click for changes to take effect.
Note
For more information about and , see the fenced(8) man page.
