title: centos: Another MySQL daemon already running with the same unix socket
body: <p>I have a strange error when starting mysqld service:</p>
  
  <pre><code>Another MySQL daemon already running with the same unix socket.
  </code></pre>
  
  <p>I've tried to list running services and stopping them but the same error happens when starting mysqld service.</p>
  
  <p>I can try to remove the mysqld and reinstall it but will this remove the database too?</p>