Primary Node Is Hung in Demoting During a Switchover ​

Symptom ​

In a cluster deployed with one primary and multiple standby DNs, if system resources are insufficient and a switchover occurs, a node is hung in demoting.

Cause Analysis ​

If system resources are insufficient, the third-party management thread cannot be created. As a result, the managed sub-threads cannot exit and the primary node is hung in demoting.

Procedure ​

Run the following command to stop the process of the primary node so that the standby node can be promoted to primary: Perform the following operations only in the preceding scenario.

 kill -9 PID