Chapter 16. Uninstalling Containerized Red Hat Gluster Storage

This chapter outlines the details for uninstalling containerized Red Hat Gluster Storage.

Perform the following steps for uninstalling:

Cleanup Red Hat Gluster Storage using Heketi
1. Remove any containers using the persistent volume claim from Red Hat Gluster Storage.
2. Remove the appropriate persistent volume claim and persistent volume:
```
# oc delete pvc <pvc_name>
# oc delete pv <pv_name>
```

Remove all OpenShift objects

Delete all project specific pods, services, routes, and deployment configurations:

# oc delete daemonset/glusterfs

# oc delete deploymentconfig heketi

# oc delete service heketi heketi-storage-endpoints

# oc delete route heketi

# oc delete endpoints heketi-storage-endpoints

Wait until all the pods have been terminated.

Check and delete the gluster service and endpoints from the projects that required a persistent storage:

# oc get endpoints,service

# oc delete endpoints <glusterfs-endpoint-name>

# oc delete service <glusterfs-service-name>

Cleanup the persistent directories
1. To cleanup the persistent directories execute the following command on each node as a root user:
```
# rm -rf /var/lib/heketi \
   /etc/glusterfs \
   /var/lib/glusterd \
   /var/log/glusterfs
```
Force cleanup the disks
1. Execute the following command to cleanup the disks:
```
# wipefs -a -f /dev/<disk-id>
```

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