Connect to your instance with ssh keys

Once you have your SSH key created and imported into the dashboard, you can go ahead and create your instances. Please make sure to select the keypair you wish to use on the “Access & Security” tab of the instance creation screen. For ssh to work it is required that port 22 is open in your selected security group in the DreamCompute Access & Security - Security Group dashboard.

Using Windows

A common program for ssh on windows is PuTTY or putty-nd . PuTTY requires that you convert your private key into a .ppk file before it can be used to connect via ssh. To do this, open up the PuTTY Key Generator (puttygen.exe), click the Conversions menu then “Import Key”. Browse to the folder that contains the *.pem file you downloaded from the DreamCompute dashboard, or the private key you created outside the Dashboard. You can give the key a name in the “Key comment” field, and when finished click the “Save private key” button to save it into a .ppk file.

Now you can open PuTTY and navigate to the Connection -> SSH -> Auth setting page to click the “browse” button near the “Private key file for authentication” field. Select the .ppk file you generated and then click open. You can now navigate to the “Session” setting page, and enter the username of your image into the host name field, followed by the IP address of your server.

The default username for each image is:

Default Usernames

Note

Instances created before October 5th, 2016 will continue to have “dhc-user” as the default user, except for CoreOS, which will have “core” as the default user.

  • Ubuntu: ubuntu
  • Fedora: fedora
  • Debian: debian
  • CentOS: centos
  • CoreOS: core

Using Mac & Linux

On Unix based systems, the ssh key will need to be setup first. There are several ways to do this:

  • Configure as your main key
    • Copy the key or .pem file to your home directory, to the ~/.ssh/id_rsa file.
  • Configure as an alternative key
    • Copy the key or .pem file to a safe place, and then edit your ~/.ssh/config file to specify that connections to that specific host will use this alternate key.
    Host IPADDRESS
    IdentityFile ~/path/to/key
    
[user@localhost]$ ssh user@IPADDRESS
  • No configuration, specifying the key on the command line

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Article last updated .