Using the Management Console to Replace Nodes

On the MC Manage page, you can quickly replace a DOWN node in the database by selecting one of the STANDBY nodes in the cluster.

A DOWN node shows up as a red node in the cluster. Click the DOWN node and the Replace node button in the Node List becomes activated, as long as there is at least one node in the cluster that is not participating in the database. The STANDBY node will be your replacement node for the node you want to retire; it will appear gray (empty) until it has been added to the database, when it turns green.

You can resize the Node List by clicking its margins and dragging to the size you want.

When you highlight a node and click Replace, MC provides a list of possible STANDBY nodes to use as a replacement. After you select the replacement node, the process begins. A node replacement could be a long-running task.

MC transitions the DOWN node to a STANDBY state, while the node you selected as the replacement will assume the identity of the original node, using the same node name, and will be started.

Assuming a successful startup, the new node will appear orange with a status of RECOVERING until the recovery procedure is complete. When the recovery process completes, the replacement node will turn green and show a state of UP.