k8s-master	192.168.1.100
k8s-node1	192.168.1.101
k8s-node2	192.168.1.102

1.前置工作

1.1修改主机名

hostnamectl set-hostname k8s-master #修改192.168.1.100主机名为k8s-master
hostnamectl set-hostname k8s-node1  #修改192.168.1.101主机名为k8s-node1
hostnamectl set-hostname k8s-node2  #修改192.168.1.102主机名为k8s-node2

1.2修改hosts文件

vim /etc/hosts
192.168.1.100 k8s-master
192.168.1.101 k8s-node1
192.168.1.102 k8s-node2

1.3关闭防火墙

systemctl stop firewalld #暂时关闭防火墙
systemctl disable firewalld # 永久关闭防火墙 

14关闭selinux

setenforce 0  # 临时关闭
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config # 永久关闭 

1.5关闭swap

swapoff -a    # 临时关闭；关闭swap主要是为了性能考虑
free             # 可以通过这个命令查看swap是否关闭了
sed -ri 's/.*swap.*/#&/' /etc/fstab  # 永久关闭

1.6将桥接的IPV4流量传递到iptables 的链

cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system

1.7安装Docker

只在k8s-master上安装docker，node节点暂时不安装

wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O/etc/yum.repos.d/docker-ce.repo
yum -y install docker-ce.x86_64
systemctl enable docker #设置开机启动
systemctl start docker #启动docker服务
docker --version  #查看docker版本

1.8添加阿里云YUM软件源

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

2. k8s-master主机安装kubeadm，kubelet和kubectl

2.1安装kubeadm，kubelet和kubectl

现在开始在master主机上安装kubernetes Master

yum -y install etcd kubernetes-master

2.2配置etcd.conf

vi /etc/etcd/etcd.conf


2.3配置apiserver

vi /etc/kubernetes/apiserver


2.4.启动etcd、kube-apiserver、kube-controller-manager、kube-scheduler等服务，并设置开机启动。

for SERVICES in etcd kube-apiserver kube-controller-manager kube-scheduler; do systemctl restart $SERVICES;systemctl enable $SERVICES;systemctl status $SERVICES ; done


2.5.在etcd中定义flannel网络

etcdctl mk /atomic.io/network/config '{"Network":"172.17.0.0/16"}'


2.6部署Dashboard

wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.5.0/aio/deploy/recommended.yaml
kubectl apply -f  recommended.yaml  #如果下载不下来的话下面附件为recommended.yaml 

recommended.yaml

到此 k8s-master主机配置完成

3.node1主机上部署kubernetes

3.1在node机上安装kubernetes Node和flannel组件应用，会自动安装docker

yum -y install flannel kubernetes-node   

3.2 为flannel网络指定etcd服务

vi /etc/sysconfig/flanneld


3.3 修改kubernetes的config文件

vi /etc/kubernetes/config


3.4 修改kubernetes的kubelet文件

vi /etc/kubernetes/kubelet


3.5 运行服务

在node1节点机上启动kube-proxy,kubelet,docker,flanneld等服务，并设置开机启动。

for SERVICES in kube-proxy kubelet docker flanneld;do systemctl restart $SERVICES;systemctl enable $SERVICES;systemctl status $SERVICES; done


到此node1节点主机已经部署完成