What Do I Do If Error Message "ssh: connect to host xxx.pem port xxxxx: Connection refused" Is Displayed?

Symptom

Possible Cause

The target instance is not running.

Solution

Log in to the ModelArts management console and check the status of the instance. If the instance is stopped, start it. If the instance is in other states, such as Error, stop and then start it. After the instance status changes to Running, establish the remote connection again.