Explains how to restore the original SD-WAN Manager cluster to active status after a failed data center becomes operational again by backing up the current active cluster and restoring its configuration.
This procedure applies to a scenario in which an initially active SD-WAN Manager cluster or the data center hosting the cluster failed and the standby SD-WAN Manager cluster was configured to be the active SD-WAN Manager cluster. If the cluster that was initially active becomes operational again, it serves as a standby cluster. By completing the following procedure, you can turn this standby cluster into the active cluster.
Summary
If a Multitenant SD-WAN Manager cluster or the data center hosting the SD-WAN Manager nodes in the cluster fail, you can recover from the failure by activating a standby SD-WAN Manager cluster. You can perform disaster recovery as follows:
Workflow
- Deploy and configure a standby SD-WAN Manager cluster. The standby SD-WAN Manager cluster is not part of the overlay network and is not active.
- Back up the configuration database of the active SD-WAN Manager cluster periodically. Choose a SD-WAN Manager node in the cluster that hosts the configuration database service and back up the configuration database.
- If the active SD-WAN Manager cluster fails, restore the most recent configuration database on the standby SD-WAN Manager cluster, activate the standby SD-WAN Manager cluster, and remove the previously active SD-WAN Manager cluster from the overlay network.
- Choose a SD-WAN Manager node in the cluster that hosts the configuration database service and restore the configuration database backed up from the previously active SD-WAN Manager cluster.
- To test disaster recovery, you can simulate a scenario in which the active SD-WAN Manager cluster fails. One way to simulate such a failure would be by disabling the tunnel interface as described in this document.