title: Start, restart or stop Varnish
body: <p>I am using <a href="https://www.tecmint.com/install-varnish-cache-for-nginx-on-centos-7/" rel="nofollow noreferrer">this</a> link for installing Varnish for nginx on CentOS 7. </p>
  
  <p>How can I start, restart or stop Varnish?</p>