Installing Rancher and RKE

Installing Rancher and RKE

Installing RKE and Rancher

Ubuntu 20.04

1  vim /etc/ssh/sshd_config
2  systemctl restart sshd
3  sudo apt-get update
4  sudo apt-get install     apt-transport-https     ca-certificates     curl     gnupg-agent     software-properties-common
5  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
6  sudo add-apt-repository    "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
    $(lsb_release -cs) \
   stable"
7  sudo apt-get update
8  sudo apt-get install docker-ce docker-ce-cli containerd.io
9  systemctl status docker
10  usermod -aG docker root
11  sysctl net.bridge.bridge-nf-call-iptables=1
12. Copy the public ssh key where rke client is installed to the rancher server 

kiranchavala@Kirans-MacBook-Pro .ssh % scp id_rsa.pub root@10.206.153.79:/root/ 

root@master2:~# cat ~/id_rsa.pub >> ~/.ssh/authorized_keys 


For centos host make sure it's a non root user 


Install Rke client 

brew install rke

rke config ---> this will generate cluster.yaml

rke up 

cp kube_config_cluster.yml .kube/config

kubectl get nodes

--------

Installing Rancher

1.Install helm on your client

brew install helm

helm repo add rancher-latest https://releases.rancher.com/server-charts/latest

kubectl create namespace cattle-system


2. Install the cert manager

kubectl apply --validate=false -f https://github.com/jetstack/cert-manager/releases/download/v0.15.0/cert-manager.crds.yaml
kubectl create namespace cert-manager
helm repo add jetstack https://charts.jetstack.io
helm repo update
helm install \
  cert-manager jetstack/cert-manager \
  --namespace cert-manager \
  --version v0.15.0

kubectl get pods --namespace cert-manager


make sure all cer-pods are running 


3. Rancher 

helm install rancher rancher-latest/rancher \
  --namespace cattle-system \
  --set hostname=rancher.my.org

Replace rancher.my.org with the hostname of ubuntu server(master from hostname command)


kubectl -n cattle-system get deploy rancher

https://master/

You can set the password and url you want to access rancher from 

Ref

https://docs.docker.com/engine/install/ubuntu/
https://rancher.com/docs/rke/latest/en/os/
https://rancher.com/docs/rancher/v2.x/en/installation/k8s-install/helm-rancher/