How to Install Rancher on Ubuntu 20.04

Rancher is a powerful open-source container management platform that simplifies the deployment and management of Kubernetes clusters. If you're looking to harness the benefits of Rancher on your Ubuntu 20.04 system, you're in the right place. This step-by-step guide will walk you through the process, ensuring a seamless installation.

1. Prerequisites:
   Before diving into the installation process, make sure your Ubuntu 20.04 system meets the following prerequisites:

   • A user account with sudo privileges.
   • Docker installed on your system. If not installed, run the following command:

     sudo apt update
     sudo apt install docker.io
     

2. Install Docker-Compose:
   Rancher relies on Docker-Compose for managing multi-container Docker applications. Install Docker-Compose using the following commands:

   sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
   sudo chmod +x /usr/local/bin/docker-compose
   

3. Download and Run Rancher:
   Use Docker-Compose to download and run the Rancher server container. Create a docker-compose.yml file with the following content:

   version: '3'
   services:
     rancher:
       image: rancher/rancher:latest
       ports:
         - "80:80"
         - "443:443"
       hostname: rancher-server
   

   Run the container:

   sudo docker-compose up -d
   

4. Access Rancher Web UI:
   Once the container is running, access the Rancher Web UI using your browser. Navigate to http://your_server_ip and log in with the default username and password: admin/admin. It is advisable to change the password immediately.

5. Add a Cluster:
   To manage Kubernetes clusters, you need to add a cluster in Rancher. Click on the "Add Cluster" button and choose the desired cluster type. Follow the on-screen instructions to complete the cluster setup.

6. Deploy Workloads:
   Now that your cluster is set up, you can deploy workloads, applications, and services using Rancher. Explore the intuitive Rancher interface to deploy and manage your containerized applications effortlessly.

More Examples:

• Scaling Applications:
  Rancher makes it easy to scale applications horizontally. Simply navigate to the "Workloads" section, select your application, and adjust the desired number of replicas.

• Monitoring and Logging:
  Explore Rancher's built-in monitoring and logging features to gain insights into your clusters' performance. Set up custom dashboards and alerts to keep your applications running smoothly.

• Security Policies:
  Leverage Rancher's security features to define and enforce policies across your clusters. Implement role-based access control (RBAC) to ensure proper permissions for users and teams.