Step 1: Prepare a Linux host and install Docker onto it. Use any Linux flavor supported by Docker, and install a version of Docker supported by Kubernetes:
Step 2: Execute the following command to download and run the Rancher server:
$ sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher:latest
The server takes less than a minute to install and will be available at https://<server_ip>. Once the server is running, log in and follow the instructions.