Uninstalling from RHOSO

1] Uninstall TVO Control Plane Services

Delete tvocontrolplane resource

cd triliovault-cfg-scripts/redhat-director-scripts/rhosp18/ctlplane-scripts/
./uninstall_tvo_control_plane.sh

1.1] Uninstall operator - tvo-operator

cd triliovault-cfg-scripts/redhat-director-scripts/rhosp18/ctlplane-scripts/
./uninstall_operator.sh <TVO_OPERATOR_CONTAINER_IMAGE_URL>

1.2] Delete old trilio-galera cluster pvcs and pv

Use the following command

oc -n trilio-openstack get pvc
oc -n trilio-openstack delete pvc <pvc0> <pvc1> <pvc2>

1.3] Unmount the backup targets

List openshift trilio control plane nodes

oc get nodes -l trilio-control-plane=enabled
Example:- 
[openstackdev@localhost dataplane-scripts]$ oc get nodes -l trilio-control-plane=enabled
NAME      STATUS   ROLES                         AGE   VERSION
master1   Ready    control-plane,master,worker   90d   v1.31.6
master2   Ready    control-plane,master,worker   90d   v1.31.6
master3   Ready    control-plane,master,worker   90d   v1.31.6

SSH Login to all these nodes and unmount the backup targets used by Trilio control plane services

oc debug node/master1
chroot /host
 
 ## List NFS backup target mounts
 mount | grep nfs
 
 ## Unmount all shares listed in above command output
 umount -l <NFS_Share>
 
 ## Verify that trilio nfs backup target is listed in command output
 mount  | grep nfs
 
 ## Unmount S3 backup target mounts
 ls -ll /var/lib/trilio/triliovault-mounts/
 
 ## If there is any S3 backup target mounted inside above director, abobve command will 
 ## fail and will provide mount point information.
 ## You need to copy those mount points and do unmount
 umount /var/lib/trilio/triliovault-mounts/<mount_point>
 
 ## After unmounting all backup targets, you will be able to run following command successfully
 ls -ll /var/lib/trilio/triliovault-mounts/
 
 ## Remove triliovault-mounts directory
 rm -rf /var/lib/trilio/triliovault-mounts/

2] Uninstall TVO Data Plane Services

Delete dataplane trilio resources from openshift

cd triliovault-cfg-scripts/redhat-director-scripts/rhosp18/dataplane-scripts
./uninstall.sh

2.1] Log into each compute node, then stop and disable all Trilio services using the approach outlined below.

ssh root@<compute_ip>

Example:-
systemctl list-units | grep trilio
  edpm_triliovault-datamover.service                                                                                                   loaded active running   triliovault-datamover container
  edpm_triliovault-object-store-BT1_S3.service                                                                                         loaded active running   triliovault-object-store-BT1_S3 container

systemctl stop edpm_triliovault-datamover.service
systemctl disable edpm_triliovault-datamover.service
Removed "/etc/systemd/system/multi-user.target.wants/edpm_triliovault-datamover.service".

2.2] Clean Trilio Keystone resources

Trilio registers services and users in Keystone. Those need to be unregistered and deleted.

openstack service delete dmapi
openstack user delete dmapi
openstack service delete TrilioVaultWLM
openstack user delete triliovault

2.3] Clean Trilio database resources

Trilio creates databases for dmapi and workloadmgr services. These databases need to be cleaned.

Login into the database cluster

oc exec -it openstack-galera-0 -n openstack bash
mysql -u root -p<password>

Run the following SQL statements to clean the database.

## Clean database
DROP DATABASE dmapi;

## Clean dmapi user
=> List 'dmapi' user accounts
MariaDB [(none)]> select user, host from mysql.user where user='dmapi';
+-------+------+
| User  | Host |
+-------+------+
| dmapi | %    |
+-------+------+
1 row in set (0.001 sec)

=> Delete those user accounts
MariaDB [(none)]> DROP USER dmapi@'%';
Query OK, 0 rows affected (0.011 sec)

=> Verify that dmapi user got cleaned
MariaDB [(none)]> select user, host from mysql.user where user='dmapi';
Empty set (0.001 sec)

## Clean database
DROP DATABASE workloadmgr;

## Clean workloadmgr user
=> List 'workloadmgr' user accounts
MariaDB [(none)]> select user, host from mysql.user where user='workloadmgr';
+-------------+------+
| User        | Host |
+-------------+------+
| workloadmgr | %    |
+-------------+------+
1 row in set (0.001 sec)

=> Delete those user accounts
MariaDB [(none)]> DROP USER workloadmgr@'%';
Query OK, 0 rows affected (0.008 sec)

=> Verify that workloadmgr user got cleaned
MariaDB [(none)]> select user, host from mysql.user where user='workloadmgr';
Empty set (0.001 sec)