Kubernetes Bootstrap

cluster-bootstrap.sh

#!/bin/bash

cat <<EOF > /etc/kubernetes/kubeadm.conf
--
apiVersion: kubeadm.k8s.io/v1beta2
kind: InitConfiguration
localAPIEndpoint:
  bindPort: 16443
---
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
controlPlaneEndpoint: "LOAD_BALANCER_DNS:LOAD_BALANCER_PORT"
apiServer:
  extraArgs:
    oidc-issuer-url: https://accounts.google.com
    oidc-username-claim: email
    oidc-client-id: 1075333334902-iqnm5nbme0c36eir9gub5m62e6pbkbqe.apps.googleusercontent.com
networking:
  podSubnet: 10.244.0.0/16
EOF

kubeadm init --config /etc/kubernetes/kubeadm.conf --upload-certs

node-bootstrap.sh

#!/bin/bash

set -e

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF

yum -y install docker-ce docker-ce-cli containerd.io kubelet kubeadm kubectl

mkdir /etc/docker
cat > /etc/docker/daemon.json <<EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF

systemctl enable --now docker kubelet
systemctl start docker kubelet