Repaving a Cluster Node

Repaving the nodes in the clusters is needed in many scenarios, including:

• When performing an update of the host operating system or software;
• When a security policy requires that you regularly rotate nodes in the cluster;
• When upgrading the hardware configuration of the nodes.

Direct maintenance on the node while it is in the cluster will cause cluster instability and result in downtime.

Nodes can be taken out of the cluster at any time, but to ensure functional continuity we recommend the following steps:

1. First add node(s) to the cluster. The nodes you add at this step will ensure the proper functioning of the cluster without the nodes you will remove at Step 2.
2. Remove the targeted node(s) from the cluster.
   Important:

   We recommend the steps above to prevent the risk of failure due to reduced hardware capacity or loss of quorum needed to maintain the cluster high availability. Once a new node is added to the cluster, you can proceed with the removal of an old node.

   New nodes (both server and agent) must meet the Automation Suite hardware requirements so that they can take the load from the nodes being removed. Ensure that the server nodes satisfy the quorum requirements while you perform the entire procedure.

   Do not attempt to reuse and reinstall on removed nodes. The node removal process leaves behind some residues that could render it unusable for a new installation.

For details steps on how to add or remove a node from the cluster, see:

• Adding a new node to the cluster

• Removing a node from the cluster