title: How to import existing Docker server to Docker Machine?
body: <p>I tried <code>docker-machine create -d none --url tcp://&lt;ipaddr&gt;:2376 remote</code> and copied <code>{ca,key,cert}.pem</code> (Client certs) to the machine directory. Then I did <code>eval "$(docker-machine env remote)"</code> which caused this error:</p>
  
  <pre><code>open /Users/uetchy/.docker/machine/machines/remote/server.pem: no such file or directory
  </code></pre>
  
  <p>I'm confusing why they need the <strong>server.pem</strong> even if client keys already exist.</p>
  
  <p>How can I avoid to put a critical <code>server.pem</code> onto a local machine?</p>