title: Unknown id, even though I have made the user (ubuntu, postgresql)
body: <p>I made a user using the postgres default user:</p>
  
  <p><img src="https://i.stack.imgur.com/tWkLO.png" alt="enter image description here"></p>
  
  <p>And when trying to access it with the user account I get an error that it is an unknown id</p>
  
  <p><img src="https://i.stack.imgur.com/M3RqW.png" alt="enter image description here"></p>
  
  <p>EDIT.</p>
  
  <p>When trying to access it like this:</p>
  
  <pre><code>klaus@xxxxx_host:~$ psql -d b124000 -U test123
  </code></pre>
  
  <p>it gives an error:</p>
  
  <pre><code>psql: FATAL:  Peer authentication failed for user "test123"
  </code></pre>