How Do I Bring Down a Single Data Center from Active-Active or Hot Standby Mode to Standalone Mode?
This use case explains how to bring down a single data center from active-active or hot standby mode to standalone mode. You must bring down a data center to standalone mode in the following scenarios:
When a data center is scheduled for maintenance.
When you want to shut down a data center to relocate it permanently from one location to another.
By default, all the data centers are in standalone mode until you activate any other modes.
To bring down a data center to standalone mode
1. Invoke the REST API.
You can bring down a single data center using the REST API PUT/rest/apigateway/dataspace/activate on the data center that you want to bring down to standalone mode. For example:
Request: PUT http://uk.myhost.com:5555/rest/apigateway/dataspace/activate.
Sample payload:
{
"mode": "STANDALONE"
}
HTTP response appears as follows:
{
"mode": "STANDALONE",
}
When the data center is activated to standalone mode, the response status code displays as 200 and you can see the corresponding log entry in the Server Logs.
Note:
If you want to revert a data center that you have brought down, you have to update the configuration accordingly. For example, if you have brought down DC 1 (from active-active or hot standby to standalone mode) for maintenance activity, you can revert DC 1 to active-active or hot standby mode by updating the configuration with the details of DC 1.