Adding and Removing Nodes
Adding and removing nodes is as simple as restarting the wizard and going to the Advanced > Layout tab and editing the current cluster layout.
When you delete a node from the GUI, some nodes (in the most common case just one) will be scheduled for reprovisioning (or rebooting if they are "non-compute" nodes). This means that during the configuration process these nodes will be rebooted and reinstalled automatically. These nodes will be marked as "reprovision" in the layout section of the advanced panel.
To issue the reinstall of a compute node, you can use the specific terminal command:
Replace <nodename> with the hostname of the node you want to reinstall. The domain name suffix is not necessary.
This command deletes the master boot record of the primary drive on the compute node, configures the PXE manager to boot the installer on the next reboot, and reboots the machine. Root SSH authentication keys must function for this command to work.
To replace a node, open the Moab Cluster Deployment Wizard and open the layout manager in the Advanced section. On this screen you must replace the MAC address of the old machine with the new one.
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