cento7.6安装kubernetes1.14.1

1 .准备:两台虚拟机maste.lab.example.com 192.168.125.142 2cpu 2G 60G
node.lab.example.com 192.168.125.141 2cpu 4G 60G

更新软件包及源
更新软件包 yum update -y
新增源：cd /etc/yum.repos.d
mv CentOS-Base.repo CentOS-Base.repo.bak
curl -o CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sed -i 's/gpgcheck=1/gpgcheck=0/g' /etc/yum.repos.d/CentOS-Base.repo
curl -o docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
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
yum clean all && yum makecache
系统设置
关闭selinux和firewalld
setenforce 0
sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
systemctl stop firewalld && systemctl disable firewalld
修改内核参数
cat <<EOF > /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

sysctl -p
加载内核模块
modprobe br_netfilter
lsmod | grep br_netfilter
禁用swap
swapoff -a
echo "vm.swappiness = 0">> /etc/sysctl.conf
sysctl -p

安装docker
yum install docker-ce
设置镜像加速器（这里我使用了自己个人的阿里云镜像加速，根据个人实际情况来写）
mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://o9ofxrn0.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload
systemctl restart docker && systemctl enable docker
1. 加载镜像
  由于国内网络已被墙，我在这里事先吧1.14.1的镜像提供出来
  链接：https://pan.baidu.com/s/1QkRoRHLFJxrQHAuslpFN4Q
  提取码：ovgt
  复制这段内容后打开百度网盘手机App，操作更方便哦
2. 安装kubeadm、kubelet和kubectl
  yum install -y kubelet kubeadm kubectl
  注：我这里现在yum源中是1.14.1的版本，之后会有更新的版本，如果是更高或者是其他版本，我这里提供的镜像就不能用了。
  kubeadm init --pod-network-cidr=10.244.0.0/16
  跑完上面的init命令后会看到类似如下的输出：
  Your Kubernetes master has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/

You can now join any number of machines by running the following on each node
as root:
kubeadm join 192.168.125.142:6443 --token 5fasbl.ctmnsuq04udlb8t2 \
--discovery-token-ca-cert-hash sha256:c7fea93fa4ebcc695a48720fb007185102167bbd7f7ff9d2be178efdee20dad0
接下来你懂的，该怎么做！！！

cento7.6安装kubernetes1.14.1

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