An image contains the code used to create a deployment. Then, a deployment can be created from an image, which should then create a replica set (which is the number of pods that should be created), and then the pods should be created.
If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.
The oc get deployments command can be used to list the deployments in a project / namespace. Let's say you want to undeploy my-app-v1.
~]# oc get deployments NAME READY UP-TO-DATE AVAILABLE AGE my-app-v1 1/1 1 1 8d my-app-v2 1/1 1 1 8d
The oc delete deployment command can be used to delete a deployment.
~]# oc delete deployment my-app-v1 deployment.apps "my-app-v1" deleted
The oc get events command should show the pod being killed.
~]$ oc get events LAST SEEN TYPE REASON OBJECT MESSAGE 39s Normal Killing pod/my-app-v1-lcgsf Stopping container my-app
After the deployment has been deleted, you may want to use the oc get all command to see if there are any other resources in the project / namespace that should be removed, such as a service or route.
~]$ oc get all NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/my-service ClusterIP 172.30.164.121 <none> 27017/TCP 114d NAME HOST/PORT PATH SERVICES PORT TERMINATION WILDCARD route.route.openshift.io/my-route example.com service001 8080 reencrypt/Redirect None