Rancher Kubernetes

This is my notes on Install Rancher Kubernetes on premise. Derive from several articles below.

Rancher Deployment Quick Start Guides

Install Kubernetes Cluster By Rancher

Setting up a Kubernetes cluster using Rancher on Ubuntu Bionic Beaver

1. Create Virtual Machine (3 VM)

• VM №1: Rancher Server
• VM №2: K8sMaster (Kubernetes etcd and controller)
• VM №3: K8sNode (Kubernetes worker node)

Make sure they can communicate to each other.

2. Install Rancher in VM №1: Rancher Server

sudo docker run -d --name=rancher --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher

3. Create Cluster by access VM №1: Rancher Server

Add Cluster

Select Custom

Click Next

3.1 Create etcd and control plane. Select etcd and Control Plane. Copy Command and run it in VM №2 K8sMaster.

Run Copied Command in K8sMaster

3.2 Create worker node. Click Edit Cluster and scroll down the page. Select Worker. Copy Command and run it in VM №3 K8sNode.

Run Copied Command in K8sNode

If it’s hang on Registering for a long time, try checking your nginx-proxy logs. (If there is network problems in your logs. You might need to allow TCP port 6443 ufw on K8sMaster by following command)

sudo ufw allow 6443/tcp

If everything is good, you will see this.

4. Deploy workload as follow

If it’s done without error, you will see this.

You can try clicking on 30001/tcp. This will open the page in new browser. The link will be http://K8sNode:portNumber. Something like this. http://10.255.0.5:30001

If you can not access to that URL, I suggest you to use nginx reverse proxy to route it to the world and try it.