4.2. Managing Cluster Nodes
4.2. Managing Cluster Nodes You can perform the following node-management functions through the luci server component of Conga : Make a node leave or join a cluster. Fence a node. Reboot a node. Delete a node. To perform one the functions in the preceding list, follow the steps in this section. The starting point of the procedure is at the cluster-specific page that you navigate to from Choose a cluster to administer displayed on the cluster tab. At the detailed menu for the cluster (below the clusters menu), click Nodes . Clicking Nodes causes the display of nodes in the center of the page and causes the display of an Add a Node element and a Configure element with a list of the nodes already configured in the cluster. At the right of each node listed on the page displayed from the preceding step, click the Choose a task drop-down box. Clicking Choose a task drop-down box reveals the following selections: Have node leave cluster / Have node join cluster , Fence this node , Reboot this node , and Delete . The actions of each function are summarized as follows: Have node leave cluster / Have node join cluster - Have node leave cluster is available when a node has joined of a cluster. Have node join cluster is available when a node has left a cluster. Selecting Have node leave cluster shuts down cluster software and makes the node leave the cluster. Making a node leave a cluster prevents the node from automatically joining the cluster when it is rebooted. Selecting Have node join cluster starts cluster software and makes the node join the cluster. Making a node join a cluster allows the node to automatically join the cluster when it is rebooted. Fence this node - Selecting this action causes the node to be fenced according to how the node is configured to be fenced. Reboot this node - Selecting this action causes the node to be rebooted. Delete - Selecting this action causes the node to be deleted from the cluster configuration. It also stops all cluster services on the node, and deletes the cluster.conf file from /etc/cluster/ . Select one of the functions and click Go . Clicking Go causes a progress page to be displayed. When the action is complete, a page is displayed showing the list of nodes for the cluster.