instack-undercloud/doc/source/post_deployment/delete_nodes.rst

Deleting Overcloud Nodes

You can delete specific nodes from an overcloud with command:

openstack overcloud node delete --stack $STACK_NAME --plan $PLAN_UUID <list of nova instance IDs>

This command updates number of nodes in tuskar plan and then updates heat stack with updated numbers and list of resource IDs (which represent nodes) to be deleted.

Note

If you passed any extra environment files when you created the overcloud (for instance, in order to configure network isolation <../advanced_deployment/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 please make sure that the node is quiesced, see quiesce_compute.

Note

A list of nova instance IDs can be listed with command:

nova list

Deleting nodes without using Tuskar

If the overcloud was deployed from heat templates directly <../advanced_deployment/template_deploy> then use the --templates parameter when deleting nodes:

openstack overcloud node delete --stack $STACK_NAME --templates [templates dir] <list of nova instance IDs>

If you passed any extra environment files when you created the overcloud (for instance, in order to configure network isolation <../advanced_deployment/network_isolation>), you must pass them again here using the -e or --environment-file option to avoid making undesired changes to the overcloud.