Adding A Member To A Running Cluster - Red Hat Cluster for Enterprise Linux 5 Configuration

c. At the Fence Configuration dialog box, bottom of the right frame (below Properties),
click Add a New Fence Level. Clicking Add a New Fence Level causes a fence-level
element (for example, Fence-Level-1, Fence-Level-2, and so on) to be displayed be-
low the node in the left frame of the Fence Configuration dialog box.
d. Click the fence-level element.
e. At the bottom of the right frame (below Properties), click Add a New Fence to this
Level. Clicking Add a New Fence to this Level causes the Fence Properties dialog
box to be displayed.
f. At the Fence Properties dialog box, click the Fence Device Type drop-down box and
select the fence device for this node. Also, provide additional information required (for
example, Port and Switch for an APC Power Device).
g. At the Fence Properties dialog box, click OK. Clicking OK causes a fence device ele-
ment to be displayed below the fence-level element.
h. To create additional fence devices at this fence level, return to step 6d. Otherwise, pro-
ceed to the next step.
i. To create additional fence levels, return to step 6c. Otherwise, proceed to the next
step.
j. If you have configured all the fence levels and fence devices for this node, click Close.
7. Choose File => Save to save the changes to the cluster configuration.

5.2. Adding a Member to a Running Cluster

The procedure for adding a member to a running cluster depends on whether the cluster con-
tains only two nodes or more than two nodes. To add a member to a running cluster, follow the
steps in one of the following sections according to the number of nodes in the cluster:
• For clusters with only two nodes —
Section 5.2.1, "Adding a Member to a Running Cluster That Contains Only Two Nodes"
• For clusters with more than two nodes —
Section 5.2.2, "Adding a Member to a Running Cluster That Contains More Than Two
Nodes"
5.2.1. Adding a Member to a Running Cluster That Contains Only
Two Nodes
To add a member to an existing cluster that is currently in operation, and contains only two
nodes, follow these steps:
1. Add the node and configure fencing for it as in
5.2. Adding a Member to a Running Cluster
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