title: Can't add new VM to existing cloud service in Azure
body: <p>I have create a new cloud service in Azure called "website" and now i'm trying to add multiple VMs in it via the Azure CLI client.  Here are the steps I've followed:</p>
  
  <p><strong>1) Create the cloud service:</strong></p>
  
  <pre>
  azure service create --affinitygroup testazure myapptest
  </pre>
  
  <p><strong>2) Create the first web server without any issues:</strong></p>
  
  <pre>
  azure vm create --ssh 22 --virtual-network-name test3 --subnet-names "Subnet-1" --vm-size medium --custom-data startup-default --vm-name www01 myapptest "b39f27a8b8c64d52b05eac6a62ebad85__Ubuntu-13_10-amd64-server-20140507-en-us-30GB" "admin" [PASSWORD]
  </pre>
  
  <p><strong>3) Create the second web server:</strong></p>
  
  <pre>
  azure vm create --ssh 22 --virtual-network-name test3 --subnet-names "Subnet-1" --vm-size medium --custom-data startup-default --vm-name www02 myapptest "b39f27a8b8c64d52b05eac6a62ebad85__Ubuntu-13_10-amd64-server-20140507-en-us-30GB" "admin" [PASSWORD]
  </pre>
  
  <p><strong>Although I get the following error:</strong></p>
  
  <pre>
  error:   A VM with dns prefix "myapptest" already exists
  error:   vm create command failed
  </pre>
  
  <p>I'm aware that the command format is as follows:</p>
  
  <pre>vm create [options] <strong>[dns-name] [image] [user-name] [password]</pre>
  
  <p>Essentially I'm trying to create multiple servers in the "<strong>mytestapp</strong>" cloud service, so I figured I would have to specify "mytestapp" for the "dns-name</strong>" parameter although apparently I'm wrong.  I can easily create this VM via the website within the "mytestapp" cloud service so I'm unsure why this doesn't work.</p>
  
  <p>I would really appreciate any clarification on this matter.</p>
  
  <p>Thanks!</p>