title: cassandra.service failed because a configured resource limit was exceeded
body: <p>I am new to cassandra and I am doing a Poc on it so, I have installed cassandra 3.11 on RHEL.7.5 VM. It was working fine for some days but when I restarted the service it failed with "pid issue".
  I have verified the logs but not found any such error related information.</p>
  
  <p>Can any one please help me in figuring out this.</p>
  
  <p>Error Msg :
  <a href="https://i.stack.imgur.com/up9Lx.png" rel="nofollow noreferrer">enter image description here</a></p>