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Document Heat removal in 2024.1 OpenStack upgrade #1425

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Document Heat removal in 2024.1 OpenStack upgrade #1425

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39 changes: 38 additions & 1 deletion doc/source/operations/upgrading-openstack.rst
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Expand Up @@ -52,7 +52,44 @@ driver. Instructions for enabling the driver can be found `here
<../configuration/magnum-capi.rst>`_. Enable the driver, recreate any clusters
using Heat, and disable the service.

TODO: guide for disabling Heat
After the upgrade (so that alerts don't fire) you can remove Heat with the
following:

.. code-block:: console

kayobe overcloud host command run --command "rm /etc/kolla/haproxy/services.d/heat-api.cfg" -l network -b
kayobe overcloud host command run --command "rm /etc/kolla/haproxy/services.d/heat-api-cfn.cfg" -l network -b

kayobe overcloud host command run --command "systemctl restart kolla-haproxy-container.service" -l network[0] -b
kayobe overcloud host command run --command "systemctl restart kolla-haproxy-container.service" -l network[1] -b
kayobe overcloud host command run --command "systemctl restart kolla-haproxy-container.service" -l network[2] -b

kayobe overcloud host command run --command "systemctl stop kolla-heat_api-container.service kolla-heat_api_cfn-container.service kolla-heat_engine-container.service" -l controllers -b
kayobe overcloud host command run --command "systemctl disable kolla-heat_api-container.service kolla-heat_api_cfn-container.service kolla-heat_engine-container.service" -l controllers -b
kayobe overcloud host command run --command "rm /etc/systemd/system/kolla-heat_api-container.service" -l controllers -b
kayobe overcloud host command run --command "rm /etc/systemd/system/kolla-heat_api_cfn-container.service" -l controllers -b
kayobe overcloud host command run --command "rm /etc/systemd/system/kolla-heat_engine-container.service" -l controllers -b

kayobe overcloud host command run --command "docker rm heat_api heat_api_cfn heat_engine" -l controllers
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kayobe overcloud host command run --command "rm -rf /etc/kolla/heat-api /etc/kolla/heat-api-cfn /etc/kolla/heat-engine" --limit controllers -b

Then from the OpenStack CLI:

.. code-block:: console

openstack service delete heat
openstack user delete heat
openstack domain set --disable heat_user_domain
openstack domain delete heat_user_domain

You can drop the ``heat`` database too, unless you want to keep historical content.

.. code-block:: console

docker exec -it mariadb mysql -u root -p
Enter the database password when prompted.
drop database heat;

Designate sink disabled by default
----------------------------------
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