title: Not able to kill mysql process with "kill -9 <pid>"
body: <p>I am on Macbook, on terminal I try to find which app is occupying port 3306. I run command:</p>
  
  <pre><code>sudo lsof -i TCP:3306 
  </code></pre>
  
  <p>I got output:</p>
  
  <pre><code>COMMAND   PID   USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
  mysqld  47730 _mysql   19u  IPv6 0x736b0ff006adfb97      0t0  TCP *:mysql (LISTEN)
  </code></pre>
  
  <p>Then, I kill the process by <code>sudo kill -9 47730</code>. It executed without error. </p>
  
  <p>But then, I run sudo lsof -i TCP:3306 again, I got:</p>
  
  <pre><code>COMMAND   PID   USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
  mysqld  47759 _mysql   19u  IPv6 0x736b0ff006ae0cd7      0t0  TCP *:mysql (LISTEN)
  </code></pre>
  
  <p>the mysql process is up again with different PID,  why? How can I permanently kill MySQL process on my Macbook? </p>
  
  <p>(mysql  Version 8.0.11)</p>