Chapter 11. Uninstalling a cluster on RHOSP from your own infrastructure

Procedure

1. On a command line, add the repositories:

   1. Register with Red Hat Subscription Manager:

      $ sudo subscription-manager register # If not done already

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   2. Pull the latest subscription data:

      $ sudo subscription-manager attach --pool=$YOUR_POOLID # If not done already

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   3. Disable the current repositories:

      $ sudo subscription-manager repos --disable=* # If not done already

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   4. Add the required repositories:

      $ sudo subscription-manager repos \
        --enable=rhel-8-for-x86_64-baseos-rpms \
        --enable=openstack-16-tools-for-rhel-8-x86_64-rpms \
        --enable=ansible-2.9-for-rhel-8-x86_64-rpms \
        --enable=rhel-8-for-x86_64-appstream-rpms

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2. Install the modules:

   $ sudo yum install python3-openstackclient ansible python3-openstacksdk

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3. Ensure that the python command points to python3:

   $ sudo alternatives --set python /usr/bin/python3

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Procedure

1. On a command line, run the playbooks that you downloaded:

   $ ansible-playbook -i inventory.yaml  \
   	down-bootstrap.yaml      \
   	down-control-plane.yaml  \
   	down-compute-nodes.yaml  \
   	down-load-balancers.yaml \
   	down-network.yaml        \
   	down-security-groups.yaml

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2. Remove any DNS record changes you made for the OpenShift Container Platform installation.