Rancher

This is to create a rancher server in Hetzner Cloud so that we can build the Kubernetes cluster.

1. Create a network

In Hetzner cloud, create a new network, we'll call it devops

2. Create an SSH key

1. Create an RSA Key Pair ssh-keygen -b 1024 -t rsa -f id_rsa

Enter a passphrase

This will create id_rsa and id_rsa.pub

2. Add the identify to your host ssh-add id_rsa

3. Add the id_rsa.pub contents to the SSH keys in Hetzner.

3. Create the rancher container

Rancher via Docker requires 4GB RAM minimum. This is CX21 for €4.90/m. Choose Nuremberg as the datacenter for the lowest ping.

1. Select Nuremberg
2. Select Ubuntu (latest LTS)
3. Standard type
4. Select CX21 - 4GB for €4.90/m
5. Select devops network
6. Select the ssh key
7. Call it rancher

4. Point a DNS record to the new server

In this case, we'll point rancher.commersive.dev to the IP address of the rancher server.

5. Install Rancher

1. SSH to the server using root@rancher.commersive.dev and accept the fingerprint. You should access immediately as the keys have been set up.
2. Install docker

apt update
apt upgrade
apt install -y docker.io open-iscsi
systemctl start docker
hostnamectl set-hostname workerx

3. Install Rancher as an automatically restarting docker container.

docker run -d --restart=unless-stopped \
  -p 80:80 -p 443:443 \
  -v /root/rancher:/var/lib/rancher \
  --name rancher-server \
  rancher/rancher:latest \
  --acme-domain rancher.xxxx

4. Access rancher at: https://rancher.xxx

5. Set up an account with a STRONG password. The username is admin.

6. Store the password in Keypass