To uninstall and erase a deployed ManageIQ installation from OKD, change to the playbook directory and run the uninstall.yml playbook:
$ cd /usr/share/ansible/openshift-ansible $ ansible-playbook -v [-i /path/to/inventory] \ playbooks/openshift-management/uninstall.yml
NFS export definitions and data stored on NFS exports are not automatically removed. You are urged to manually erase any data from old application or database deployments before attempting to initialize a new deployment.
Failure to erase old PostgreSQL data can result in cascading errors, causing the postgresql pod to enter a
crashloopbackoff state. This blocks the manageiq pod from ever starting. The cause of the
crashloopbackoff is due to incorrect file permissions on the database NFS export created during a previous deployment.
To continue, erase all data from the PostgreSQL export and delete the pod (not the deployer pod). For example, if you had the following pods:
$ oc get pods NAME READY STATUS RESTARTS AGE httpd-1-cx7fk 1/1 Running 1 21h manageiq-0 0/1 Running 1 21h memcached-1-vkc7p 1/1 Running 1 21h postgresql-1-deploy 1/1 Running 1 21h postgresql-1-6w2t4 0/1 CrashLoopBackOff 1 21h
Then you would:
Erase the data from the database NFS export.
$ oc delete postgresql-1-6w2t4
The PostgreSQL deployer pod will try to scale up a new postgresql pod to replace the one you deleted. After the postgresql pod is running, the manageiq pod will stop blocking and begin application initialization.