SETUP KUBERNETES MASTER NODE ON UBUNTU WITH FLANNEL

init-script.sh

# init cluster
sudo swapoff -a
sudo kubeadm init --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=HOST_IP

# apply kubectl config
sudo cp -f /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

# untaint master
kubectl taint nodes --all node-role.kubernetes.io/master-

# flannel
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml

# init helm
kubectl create namespace tiller-world
kubectl create serviceaccount tiller --namespace tiller-world
kubectl create -f role-tiller.yaml
kubectl create -f rolebinding-tiller.yaml
helm init --service-account tiller --tiller-namespace tiller-world

install-script.sh

# install kubernetes
apt-get update && apt-get install -y apt-transport-https curl
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
apt-get install -y kubelet kubeadm kubectl
apt-mark hold kubelet kubeadm kubectl

# install helm
mkdir -p /tmp/helm && cd $_
curl -O https://storage.googleapis.com/kubernetes-helm/helm-v2.12.3-linux-amd64.tar.gz
tar -zxvf helm-v2.12.3-linux-amd64.tar.gz
sudo mv linux-amd64/helm /usr/local/bin/helm

reset-script.sh

sudo kubeadm reset
sudo systemctl stop kubelet
sudo systemctl stop docker
sudo rm -rf /var/lib/cni/
sudo rm -rf /var/lib/kubelet/*
sudo rm -rf /etc/cni/
sudo ip link delete cni0
sudo ip link delete flannel.1
sudo ip link delete docker0

role-tiller.yaml

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: tiller-manager
  namespace: tiller-world
rules:
- apiGroups: ["", "batch", "extensions", "apps"]
  resources: ["*"]
  verbs: ["*"]

rolebinding-tiller.yaml

kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: tiller-binding
  namespace: tiller-world
subjects:
- kind: ServiceAccount
  name: tiller
  namespace: tiller-world
roleRef:
  kind: Role
  name: tiller-manager
  apiGroup: rbac.authorization.k8s.io