Not able change the hostname with cloud-init script

问题

I have the following simple script which changes the hostname of Linux VM.

    #cloud-config
     hostname: my-host

But when launched Amazon Linux AMI with the above script in user-data hostname didn't changed. Can anyone help me about this

来源：https://stackoverflow.com/questions/46253755/not-able-change-the-hostname-with-cloud-init-script