openstack-helm/doc/source/install/developer/cleaning-deployment.rst

Cleaning the Deployment

Removing Helm Charts

To delete an installed helm chart, use the following command:

helm delete ${RELEASE_NAME} --purge

This will delete all Kubernetes resources generated when the chart was instantiated. However for OpenStack charts, by default, this will not delete the database and database users that were created when the chart was installed. All OpenStack projects can be configured such that upon deletion, their database will also be removed. To delete the database when the chart is deleted the database drop job must be enabled before installing the chart. There are two ways to enable the job, set the job_db_drop value to true in the chart's values.yaml file, or override the value using the helm install command as follows:

helm install ${RELEASE_NAME} --set manifests.job_db_drop=true

Environment tear-down

To tear-down, the development environment charts should be removed firstly from the 'openstack' namespace and then the 'ceph' namespace using the commands from the Removing Helm Charts section. Once this has been done the namespaces themselves can be cleaned by running:

kubectl delete namespace <namespace_name>

Final cleanup of the development environment is then performed by removing the /var/lib/openstack-helm directory from the host. This will restore the environment back to a clean Kubernetes deployment, that can either be manually removed or over-written by restarting the deployment process.