title: mongodb on OSX : how to update brew service to start with auth?
body: <p>I installed mongodb with homebrew. I added an admin , and I updated the /usr/local/etc/mongod.conf to enable the security authorisation.</p>
  
  <p>I can start mongod with auth:</p>
  
  <pre><code>mongod --auth --port 27017 --dbpath   /usr/local/var/mongodb
  </code></pre>
  
  <p>But starting service :</p>
  
  <pre><code>brew services start mongodb
  </code></pre>
  
  <p>does not start with auth ...</p>
  
  <p>how can I do it ?</p>
  
  <p>thanks !!</p>