如何重命名运行mnesia数据库的节点

I created a Mnesia database / Schema on machine1. The node was named mypl@machine1. I then moved all files to machine2, because machine1 broke down. Everything runs fine as long as the code is running with the name "mypl@machine1". Obviously this is somewhat confugsing, because it is now running on machine2.I created a Mnesia database / Schema on machine