src/foundation/scripts/k8s_master.sh

   1 #!/bin/bash -ex
   2
   3 # For host setup as Kubernetes master
   4 MGMT_IP=$1
   5 POD_NETWORK_CIDR=${2:-192.168.0.0/16}
   6 SERVICE_CIDR=${3:-172.16.1.0/24}
   7
   8 if [ -z "${MGMT_IP}" ]; then
   9   echo "Please specify a management IP!"
  10   exit 1
  11 fi
  12
  13 #Add extra flags to Kubelet
  14 sed '/Environment=\"KUBELET_CONFIG_ARGS/a\Environment=\"KUBELET_EXTRA_ARGS=--fail-swap-on=false --feature-gates HugePages=false\"' -i /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
  15
  16 if ! kubectl get nodes; then
  17   sudo kubeadm config images pull
  18   sudo kubeadm init \
  19     --pod-network-cidr="${POD_NETWORK_CIDR}" \
  20     --apiserver-advertise-address="${MGMT_IP}" \
  21     --service-cidr="${SERVICE_CIDR}"
  22
  23   if [ "$(id -u)" = 0 ]; then
  24     echo "export KUBECONFIG=/etc/kubernetes/admin.conf" | \
  25       tee -a "${HOME}/.profile"
  26     # shellcheck disable=SC1090
  27     source "${HOME}/.profile"
  28   else
  29     mkdir -p "${HOME}/.kube"
  30     sudo cp -i /etc/kubernetes/admin.conf "${HOME}/.kube/config"
  31     sudo chown "$(id -u)":"$(id -g)" "${HOME}/.kube/config"
  32   fi
  33 fi