See below for instructions on recovering the active data center system to the passive data center. 

To recover the active data center system in the passive data center. 

1. If the active data center is accessible after the disaster, run the following command on any node of that cluster to stop the services.
   
   $ sudo stop-services.sh
   If the active data center is not accessible or if the stop-services.sh  execution ends with errors, then change the network configuration to prevent nodes in the active data center from accessing the database.
2. Configure one of the database nodes on the passive data center as the primary (read-write) database node.
3. Configure the load balancer to send traffic to the passive data center instead of the active one. 
4. Log in to the Management console in the passive data center and deploy all solutions to complete the restore process. The deployment process is expected to take ~30 min (~5 min per solution). 
   When completing these steps, the passive warm-standby data center becomes the active one, and vice versa.
5. In the passive data center, if the stop-services.sh was not executed successfully during step 1 (e.g., because the nodes were down) , fix the issues and retry the execution until it completes without errors. Then change the network configuration to allow nodes in the passive data center to access the database.