title: Does CentoOS/Yum restart services after updating them with yum?
body: <p>Simple enough question. When I run yum update on a CentOS box, do I need to manually restart mysqld, httpd, ... and so on if they have been updated, or do they get restarted automatically? </p>
  
  <p>Does anyone know where to find a source to back this up?</p>