#安装依赖
yum install -y conntrack ipvsadm ipset jq sysstat iptables.services libseccomp yum-utils device-mapper-persistent-data lvm2 wget

#环境配置
#配置host
#######
#关闭防火墙
systemctl stop firewalld && systemctl disable firewalld
systemctl start iptables.service
systemctl enable iptables.service
iptables -F
services iptables save
#关闭selinux
setenforce 0
#关闭swap
swapoff -a
#配置系统转发
cat <<EOF >/etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system

#配置Docker的yum源
wget http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
#安装Docker
yum install -y docker-ce-18.09.0 docker-ce-cli-18.09.0 containerd.io
systemctl start docker && sudo systemctl enable docker

#配置k8s源
cat <<EOF >/etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
       http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

#安装k8s组件
yum install -y kubelet-1.14.0-0
yum install -y kubeadm-1.14.0-0 kubectl-1.14.0-0

#配置Docker的cgroup
cat <<EOF >/etc/docker/daemon.json
{
"exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

systemctl enable kubelet && systemctl start kubelet

#查看k8s所需images
kubeadm config images list

#!/bin/bash
set -e
#拉取镜像，国内适用阿里源拉取替换，国外可不用
######################################
KUBE_VERSION=v1.14.0
KUBE_PAUSE_VERSION=3.1
ETCD_VERSION=3.3.10
CORE_DNS_VERSION=1.3.1
GCR_URL=k8s.gcr.io
ALIYUN_URL=registry.cn-hangzhou.aliyuncs.com/google_containers

images=(kube-proxy:"${KUBE_VERSION}"
  kube-scheduler:"${KUBE_VERSION}"
  kube-controller-manager:"${KUBE_VERSION}"
  kube-apiserver:"${KUBE_VERSION}"
  pause:"${KUBE_PAUSE_VERSION}"
  etcd:"${ETCD_VERSION}"
  coredns:"${CORE_DNS_VERSION}")

for imageName in "${images[@]}"; do
  docker pull $ALIYUN_URL/"${imageName}"
  docker tag $ALIYUN_URL/"${imageName}" $GCR_URL/"${imageName}"
  docker rmi $ALIYUN_URL/"${imageName}"
done
#####################################

#查看images
docker images
#初始化，创建master
kubeadm init --kubernetes-version=1.14.0 --apiserver-advertise-address=IP --pod-network-cidr=10.244.0.0/16 | tee /tmp/k8s_init.log
#各用户配置
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
#查看nodes 存在NO ready
kubectl get nodes
#配置网络
kubectl apply -f https://docs.projectcalico.org/v3.9/manifests/calico.yaml
#查看nodes 全部ready
kubectl get nodes
kubectl get pods --all-namespaces -w