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Deleting Overcloud Nodes
You can delete specific nodes from an overcloud with command:
openstack overcloud node delete --stack $STACK_NAME --templates [templates dir] <list of nova instance IDs or hostnames starting in Train>This command updates the heat stack with updated numbers and list of resource IDs (which represent nodes) to be deleted.
Train
In Train, we added a user confirmation to the scale down command to prevent accidental node removal. To skip it, please use "--yes".
Train
Starting in Train and onward, openstack overcloud node delete can take a list of server hostnames instead of instance ids. However they can't be mixed while running the command. Example: if you use hostnames, it would have to be for all the nodes to delete.
Note
If you are baremetal_provision then follow those scale-down
instructions to call openstack overcloud node delete with a
--baremetal-deployment argument instead of passing a list
of nodes to delete as arguments.
Note
If you passed any extra environment files when you created the
overcloud (for instance, in order to configure network isolation
<../features/network_isolation>), you must pass them again
here using the -e or --environment-file option
to avoid making undesired changes to the overcloud.
Note
Before deleting a compute node or a cephstorage node, please make
sure that the node is quiesced, see quiesce_compute or quiesce_cephstorage.
Note
A list of nova instance IDs can be listed with command:
openstack server list