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8.3. Replacing Compute Nodes
If a Compute node fails, you can replace the node with a working one. Replacing a Compute node uses the following process:
- Migrate workload off the existing Compute node and shutdown the node. See Section 7.8, “Migrating VMs from an Overcloud Compute Node” for this process.
- Remove the Compute node from the Overcloud. See Section 8.2, “Removing Compute Nodes” for this process.
- Scale out the Overcloud with a new Compute node. See Chapter 8, Scaling the Overcloud for this process.
This process ensures that a node can be replaced without affecting the availability of any instances.
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