Removing the primary node

Removing the primary node refers to the removal of the first (bootstrap) node in the cluster and is only applicable when using the manual bare metal provider.

If the deployment consists of multiple nodes then remove all non-primary nodes before removing the primary node. Refer to the Scaling the cluster in section of this documentation for exact instructions on how to do that.

Remove components from the machine

Warning

Removing the primary node will destroy the entire Canonical OpenStack deployment.

Software components now need to be removed from the primary node. Perform all the below steps on the primary node.

Remove the Juju model:

juju destroy-model --destroy-storage --no-prompt --force --no-wait openstack

Remove the Juju controller:

juju destroy-controller --no-prompt --destroy-storage  --force --no-wait sunbeam-controller

Remove the Juju agent:

sudo /sbin/remove-juju-services

Remove the juju snap:

sudo snap remove --purge juju

Remove Juju configuration:

rm -rf ~/.local/share/juju
sudo rm -rf /var/lib/juju/dqlite
sudo rm -rf /var/lib/juju/system-identity
sudo rm -rf /var/lib/juju/bootstrap-params

Remove the openstack-hypervisor and openstack snaps:

sudo snap remove --purge openstack-hypervisor
sudo snap remove --purge openstack

Remove openstack snap configuration:

rm -rf ~/.local/share/openstack

Remove the k8s snap:

sudo k8s remove-node
sudo snap remove --purge k8s

Note

The above steps can take a few minutes to complete.

Remove the disk(s) used by MicroCeph on this node:

sudo microceph disk list
sudo microceph disk remove <OSD on this node>

Remove the microceph snap:

sudo microceph disk list
sudo snap remove --purge microceph

If required clean the disk(s) identified in the earlier command:

Warning

The dd command will result in the permanent erasure of data. It is vital that you have specified the correct disk path to avoid unintended data loss.

sudo dd if=/dev/zero of=PATH bs=4M count=10

PATH is a path to the disk being cleaned.

Clear the remaining network configuration with a reboot:

sudo reboot