title: php-fpm: ERROR: unable to bind listening socket for address '127.0.0.1:9000': Address already in use (48)
body: <p>I have a small problem with my local server running with php-fpm and nginx.</p>
  
  <p>I can't run php-fpm it returns an error (the title).</p>
  
  <p>And when I type the command <code>sudo lsof -i :9000</code> I get this (server/network is not my cup of tea):</p>
  
  <pre><code>php-fpm   47 root    8u  IPv4 0x619bafbaac199241      0t0  TCP localhost:cslistener (LISTEN)
  php-fpm  262 _www    9u  IPv4 0x619bafbaac199241      0t0  TCP localhost:cslistener (LISTEN)
  php-fpm  263 _www    9u  IPv4 0x619bafbaac199241      0t0  TCP localhost:cslistener (LISTEN)
  php-fpm 2623 _www    9u  IPv4 0x619bafbaac199241      0t0  TCP localhost:cslistener (LISTEN)
  </code></pre>
  
  <p>configuration file /usr/local/etc/php/7.2/php-fpm.conf test is successful</p>
  
  <p><code>sudo php-fpm -t</code> returns:</p>
  
  <p><code>NOTICE: configuration file /usr/local/etc/php/7.2/php-fpm.conf test is successful</code></p>
  
  <p>Is this normal? If not how can I get ride of it?</p>