# Install and Configure DCOS CLI for Mesos To install the DCOS CLI: Install virtualenv. The Python tool virtualenv is used to manage the DCOS CLI’s environment. ``` sudo pip install virtualenv ``` 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. ``` $ mkdir dcos $ cd dcos $ curl -O https://downloads.mesosphere.io/dcos-cli/install.sh ``` Run the DCOS CLI install script, where <hosturl> is the hostname of your master node prefixed with http://: ``` $ bash install.sh <install_dir> <mesos-master-host> ``` For example, if the hostname of your Mesos master node is mesos-master.example.com: ``` $ bash install.sh . http://mesos-master.example.com ``` Follow the on-screen DCOS CLI instructions and enter the Mesosphere verification code. You can ignore any Python ‘Insecure Platform’ warnings. ``` Confirm whether you want to add DCOS to your system PATH: $ Modify your bash profile to add DCOS to your PATH? [yes/no] ``` Since DCOS CLI is used for DCOS cluster, reconfigure Marathon and Mesos masters URLs with the following commands: ``` dcos config set core.mesos_master_url http://<mesos-master-host>:5050 dcos config set marathon.url http://<marathon-host>:8080 ```