src/foundation/scripts/k8s_master.sh

   1 #!/bin/bash -ex
   2 # shellcheck source=/dev/null
   3
   4 # For host setup as Kubernetes master
   5 MGMT_IP=$1
   6 POD_NETWORK_CIDR=${2:-192.168.0.0/16}
   7 SERVICE_CIDR=${3:-172.16.1.0/24}
   8
   9 if [ -z "${MGMT_IP}" ]; then
  10   echo "Please specify a management IP!"
  11   exit 1
  12 fi
  13
  14 if ! kubectl get nodes; then
  15   sudo kubeadm config images pull
  16   sudo kubeadm init \
  17     --pod-network-cidr="${POD_NETWORK_CIDR}" \
  18     --apiserver-advertise-address="${MGMT_IP}" \
  19     --service-cidr="${SERVICE_CIDR}"
  20
  21   if [ "$(id -u)" = 0 ]; then
  22     echo "export KUBECONFIG=/etc/kubernetes/admin.conf" | \
  23       tee -a "${HOME}/.bashrc"
  24     # shellcheck disable=SC1090
  25     source "${HOME}/.bashrc"
  26   fi
  27
  28   mkdir -p "${HOME}/.kube"
  29   # shellcheck disable=SC2216
  30   yes | sudo cp -rf /etc/kubernetes/admin.conf "${HOME}/.kube/config"
  31   sudo chown "$(id -u)":"$(id -g)" "${HOME}/.kube/config"
  32
  33   sleep 5
  34   sudo swapon -a
  35 fi