<sub>Posted on January 13, 2016 by [https://il.linkedin.com/in/knesenko '''Kiril Nesenko''']</sub><br /> To install the DCOS CLI: Install virtualenv. The Python tool virtualenv is used to manage the DCOS CLI’s environment. <source lang="bash" enclose="div"> sudo pip install virtualenv </source><br /> Tip: On some older Python versions, ignore any ‘Insecure Platform’ warnings. For more information, see https://virtualenv.pypa.io/en/latest/installation.html. From the command line, create a new directory named dcos and navigate into it. <source lang="bash" enclose="div"> $ mkdir dcos $ cd dcos $ curl -O https://downloads.mesosphere.io/dcos-cli/install.sh </source><br /> Run the DCOS CLI install script, where &lt;hosturl&gt; is the hostname of your master node prefixed with http://: <source lang="bash" enclose="div"> $ bash install.sh <install_dir> <mesos-master-host> </source><br /> For example, if the hostname of your Mesos master node is mesos-master.example.com: <source lang="bash" enclose="div"> $ bash install.sh . http://mesos-master.example.com </source><br /> Follow the on-screen DCOS CLI instructions and enter the Mesosphere verification code. You can ignore any Python ‘Insecure Platform’ warnings. <source lang="bash" enclose="div"> Confirm whether you want to add DCOS to your system PATH: $ Modify your bash profile to add DCOS to your PATH? [yes/no] </source><br /> Since DCOS CLI is used for DCOS cluster, reconfigure Marathon and Mesos masters URLs with the following commands: <source lang="bash" enclose="div"> dcos config set core.mesos_master_url http://<mesos-master-host>:5050 dcos config set marathon.url http://<marathon-host>:8080 </source><br /> <br /><br /> Next - [[Install and Configure Mesos DNS on a Mesos Cluster]]