create-k8s-cluster

#!/bin/bash

echo "Configuring hosts..."
for node in ts{1..4}; do
  ssh-keygen -f "$HOME/.ssh/known_hosts" -R "${node}.maas"
  echo "$node: uploading configuration"
  scp ./resource/config-k8s-host $node:
  echo "$node: Base configuring"
  ssh $node "sudo node=$node ./config-k8s-host" &
  echo PID[${node: -1}]=$!
  PID[${node: -1}]=$!
done

wait ${PID[*]}
unset PID
echo "Base configured all hosts"

echo "Setting up master"
ssh ts1 'sudo kubeadm init -- --apiserver-cert-extra-sans=ts1.maas --pod-network-cidr=192.168.0.0/16'
ssh ts1 'mkdir -p $HOME/.kube'
ssh ts1 'sudo cp /etc/kubernetes/admin.conf $HOME/.kube/config'
ssh ts1 'sudo chown $(id -u):$(id -g) $HOME/.kube/config'

echo "Configuring CNI"
scp ./resource/calico.yaml ts1:
ssh ts1 'kubectl apply -f $HOME/calico.yaml'

echo "Setting up workers"
JOIN=$(ssh -o StrictHostKeyChecking=no ts1 \
    "sudo kubeadm token create --print-join-command")
for node in ts{2..4}; do
  echo "$node: joining as worker"
  ssh -o StrictHostKeyChecking=no $node "sudo $JOIN"
  PID[$node]=$!
done
wait ${PID[*]}

scp ./resource/{svc_acct.yaml,cluster_role_binding.yaml,kubernetes-dashboard.yaml} ts1:
ssh ts1 'kubectl apply -f $HOME/svc_acct.yaml'
ssh ts1 'kubectl apply -f $HOME/cluster_role_binding.yaml'
ssh ts1 'kubectl apply -f $HOME/kubernetes-dashboard.yaml'
echo "done"