Here are the steps in installing and setting up Rancher
1) Update and upgrade Ubuntu
sudo apt update && sudo apt upgrade
2) Install OpenSSH Server
sudo apt-get install -y openssh-server
3) Install cURL
sudo apt install curl
4) Check cURL version
curl –version
5) Install Rancher compatible Docker
curl https://releases.rancher.com/install-docker/20.10.sh | sh
6) Add user to Docker user group
sudo usermod -aG docker $USER && newgrp docker
7) Pull Rancher Docker Container
https://rancher.com/quick-start
sudo docker run –privileged -d –restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher
8) Launch web browser and open Rancher webpage
http://192.168.138.146
9) Get Container ID
docker ps
OR
docker container ls
10) Get the bootstrap password.
docker logs container-id 2>&1 | grep “Bootstrap Password:”
… with edited container ID…
docker logs 4203e8664138 2>&1 | grep “Bootstrap Password:”
11) Copy boot strap password and paste it in the Rancher webpage.
12) Setup your own customized password.
Reference