unable to connect to mysql while install edx confi

TASK: [edxlocal | create a database for edxapp] ******************************* 
failed: [localhost] => {"failed": true, "item": ""}
msg: unable to connect, check login_user and login_password are correct, or alternatively check ~/.my.cnf contains credentials

FATAL: all hosts have already failed -- aborting

解决：1.开启MYSQL

2.

The method you were using suppose to work in a freshly installed Ubuntu server. It also meant that you'd already installed mysql in your server. So, to fix this issue, create this file /root/.my.cnf with the following content: [client] user=root password=<your root pass> [mysql] user=root password=<your root pass> [mysqldump] user=root password=<your root pass> [mysqldiff] user=root password=<your root pass> Run the command again, It should work.