二、kubernetes搭建集群

主要内容
1.环境准备(2主机)
2.安装流程
3.问题分析
4.总结
环境配置(2主机)
系统：CentOS 7.3 x64 
网络：局域网（VPC） 
主机： 
master：172.16.0.17 
node-1：172.16.0.7

[root@k8s-master ~]#hostnamectl set-hostname k8s-master
echo "39.96.69.98   k8s-master" >> /etc/hosts

[root@k8s-node-1 ~]#hostnamectl set-hostname k8s-master
echo "39.96.69.98   k8s-master" >> /etc/hosts

[root@k8s-master ~]#echo "39.96.69.98   k8s-master
47.94.174.85   k8s-node1" >> /etc/hosts

[root@k8s-node-1 ~]#echo "39.96.69.98   k8s-master
47.94.174.85   k8s-node1" >> /etc/hosts

[root@k8s-master ~]# systemctl disable firewalld
[root@k8s-master ~]# systemctl stop firewalld
 
[root@k8s-node-1 ~]# systemctl disable firewalld
[root@k8s-node-1 ~]# systemctl stop firewalld

[root@k8s-master ~]# setenforce 0
 
[root@k8s-node-1 ~]# setenforce 0

[root@k8s-master ~]# swapoff -a
 
[root@k8s-node-1 ~]# swapoff -a

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 install -y kubelet kubeadm kubectl

systemctl start docker && systemctl enable docker
systemctl start kubelet && systemctl enable kubelet

kubeadm config images list
#输出如下结果
k8s.gcr.io/kube-apiserver:v1.12.2
k8s.gcr.io/kube-controller-manager:v1.12.2
k8s.gcr.io/kube-scheduler:v1.12.2
k8s.gcr.io/kube-proxy:v1.12.2
k8s.gcr.io/pause:3.1
k8s.gcr.io/etcd:3.2.24
k8s.gcr.io/coredns:1.2.2