master 설치 스크립트 추가

Author: kairos03

install-master.sh

@@ -0,0 +1,60 @@
+#!/bin/bash -xe
+
+set -x
+
+swapoff -a
+
+function get_random_string () {
+	random_string=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w $1 | head -n 1)
+	echo $random_string
+}
+
+# 서버단에서 내려줘야 함.
+ADVERTISE_NET_DEV=${ADVERTISE_NET_DEV:-enp0s8}
+ADVERTISE_ADDR=$(ifconfig $ADVERTISE_NET_DEV | grep 'inet' | cut -d: -f2 | awk '{print $2}')
+JOIN_TOKEN=${JOIN_TOKEN:-"$(get_random_string 6).$(get_random_string 16)"}
+KUBERNETES_VERSION=${KUBERNETES_VERSION:-latest}
+KUBERNETES_CNI_VERSION=${KUBERNETES_CNI_VERSION:-latest}
+DOCKER_VERSION=${DOCKER_VERSION:-latest}
+
+sed -i $(eval echo 's/JOIN_TOKEN/$JOIN_TOKEN/g') master.yaml
+sed -i $(eval echo 's/ADVERTISE_ADDR/$ADVERTISE_ADDR/g') master.yaml
+
+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 -
+echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" >/etc/apt/sources.list.d/kubernetes.list
+
+wget -qO- get.docker.com | sh
+
+if [ "$DOCKER_VERSION" != "latest" ]
+then
+  apt-get install -y --allow-downgrades docker-ce=$DOCKER_VERSION
+  service docker restart
+fi
+
+if [ "$KUBERNETES_VERSION" = "latest" ]
+then
+  apt-get install -y kubelet kubeadm kubectl
+else
+  apt-get install -y kubelet=$KUBERNETES_VERSION \
+    kubeadm=$KUBERNETES_VERSION \
+    kubectl=$KUBERNETES_VERSION
+fi
+
+if [ "$KUBERNETES_CNI_VERSION" = "latest" ]
+then
+  apt-get install -y kubernetes-cni
+else
+  apt-get install -y kubernetes-cni=$KUBERNETES_CNI_VERSION
+fi
+
+# Run kubeadm
+kubeadm init \
+  --config master.yaml
+
+# Prepare kubeconfig file for download to local machine
+sudo mkdir -p /root/.kube
+sudo cp -i /etc/kubernetes/admin.conf /root/.kube/config
+sudo chown root:root /root/.kube/config

master.yaml

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+kind: ClusterConfiguration
+apiVersion: kubeadm.k8s.io/v1beta2
+apiServer:
+  extraArgs:
+    authorization-mode: Node,RBAC
+  timeoutForControlPlane: 4m0s
+certificatesDir: /etc/kubernetes/pki
+clusterName: kubernetes
+controlPlaneEndpoint: ""
+dns:
+  type: CoreDNS
+etcd:
+  local:
+    dataDir: /var/lib/etcd
+imageRepository: k8s.gcr.io
+
+networking:
+  dnsDomain: cluster.local
+  podSubnet: 172.24.0.0/16 # Pod Subnet
+  serviceSubnet: 10.96.0.0/12
+scheduler: {}
+---
+apiVersion: kubeadm.k8s.io/v1beta2
+kind: InitConfiguration
+bootstrapTokens:
+- token: "JOIN_TOKEN"
+  description: "kubeadm bootstrap token"
+  ttl: "15m"
+localAPIEndpoint:
+  advertiseAddress: "ADVERTISE_ADDR"