If the primary cell is not running properly, to recover the vCloud Director database, you can promote one of the standby cells to become the new primary cell. After that, you must deploy a new standby cell.
- Verify that the primary cell is in the not reachable or failed state.
- Verify that the two standby cells are in the running state.
- Familiarize yourself with the procedure to remove a failed appliance from the vCloud Director server group and the repmgr high availability cluster. See Unregister a Failed Primary Cell in a Database High Availability Cluster.
- If possible, use the cell management tool to shut down the vCloud Director process. From the failed primary cell, run the following command.
/opt/vmware/vcloud-director/bin/cell-management-tool -u <admin username> cell --shutdown
- Power off the failed primary VM.
- Log in as root to the appliance management user interface of a running standby cell, https://standby_ip_address:5480.
- In the Role column for the standby cell that you want to become the new primary cell, click Promote.
The cell becomes the new primary cell in running state. The other standby cell is following the newly promoted primary cell.
- Remove the failed primary appliance from both the vCloud Director server group and the repmgr high availability cluster.
- If you want to reuse the IP address and hostname of the failed primary, ensure that the failed primary appliance remains powered off or delete it.
- Deploy a new standby appliance. You can deploy the appliance by using the vSphere Client or deploy the appliance by using the VMware OVF Tool.
After deploying the new standby appliance, the cluster health must be Healthy.