Giulio Fidente 39b88b1ff4 Document how to quiesce and delete a cephstorage node
Adds a chapter in post_deployment describing how to cleanly remove
from the Ceph cluster a cephstorage node and all the OSDs it hosted.

Change-Id: I6690bb54e4724d1042ecc3fa812cc390de6ce49d
2016-11-30 21:36:40 +01:00

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.. _delete_nodes:
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>
This command updates the 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 :doc:`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 or a cephstorage node, please make sure that
the node is quiesced, see :ref:`quiesce_compute` or
:ref:`quiesce_cephstorage`.
.. note::
A list of nova instance IDs can be listed with command::
nova list