Installation guide

For Rest art t h is clu st er and St o p t h is clu st er/St art t h is clu st er — Displays a
page with the list of nodes for the cluster.
For Delet e t h is clu st er — Displays the Choose a cluster to administer page in
the clu st er tab, showing a list of clusters.
4.2. Managing Clust er Nodes
You can perform the following node-management functions through the lu ci server component of
Co n g a:
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 clu st er tab.
1. At the detailed menu for the cluster (below the clu st ers menu), click No d es. Clicking No d es
causes the display of nodes in the center of the page and causes the display of an Ad d a
No d e element and a Co n f ig u re element with a list of the nodes already configured in the
cluster.
2. At the right of each node listed on the page displayed from the preceding step, click the
Ch o o se a t ask drop-down box. Clicking C h o o se a t ask drop-down box reveals the
following selections: Have n o d e leave clu st er/Have n o d e jo in clu st er, Fen ce t h is
n o d e, Reb o o t t h is n o d e, and Delet e. The actions of each function are summarized as
follows:
Have n o d e leave clu st er/Have n o d e jo in clu st er — Have n o d e leave clu st er is
available when a node has joined of a cluster. Have n o d e jo in clu st er is available
when a node has left a cluster.
Selecting Have n o d e leave clu st er 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 n o d e jo in clu st er 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.
Fen ce t h is n o d e — Selecting this action causes the node to be fenced according to how
the node is configured to be fenced.
Reb o o t t h is n o d e — Selecting this action causes the node to be rebooted.
Delet e — 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/.
3. Select one of the functions and click Go.
⁠Chapt er 4 . Managing Red Hat Clust er Wit h Conga
53