二进制部署Kubernetes 1.23.15版本高可用集群实战

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天天打老虎 2025-10-14 13:52:23 ©著作权

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前置知识: 部署Kubernetes集群的方式
一.K8S二进制部署准备环境

1.所有节点安装常用的软件包
2.免密钥登录集群并配置同步脚本
3.Linux基础环境优化
4.所有节点升级Linux内核
5.所有节点安装ipvsadm以实现kube-proxy的负载均衡
6.重启所有节点并检查内核和模块是否配置成功

二.基础组件安装

1.所有节点部署docker环境
2.部署etcd和K8S程序

三.生成K8S集群证书文件

1.k8s-master01节点下载证书管理工具
2.k8s-master01节点生成etcd证书
3.k8s组件apiserver相关证书
4.k8s组件controller manager相关证书
5.k8s组件scheduler相关证书
6.生成admin的证书
7.创建ServiceAccount Key

四.二进制高可用及etcd配置

1.创建配置文件
2.所有节点启动服务

五.高可用配置（haproxy+keepalived）

1.所有节点(k8s-master0[1-3])安装keepalived和haproxy
2.所有节点(k8s-master0[1-3])配置haproxy，配置文件各个节点相同
3.所有节点(k8s-master0[1-3])配置keepalived，配置文件各节点不同
4.所有节点(k8s-master0[1-3])配置KeepAlived健康检查文件
5.启动服务

六.二进制K8s master组件配置

1.所有节点(k8s-master0[1-3])Apiserver服务启动
2.所有节点(k8s-master0[1-3])ControllerManager服务启动
3.所有节点(k8s-master0[1-3])Scheduler服务启动

七.创建Bootstrapping自动颁发证书

1.k8s-master01节点创建bootstrap-kubelet.kubeconfig文件
2.所有master节点拷贝管理证书
3.创建bootstrap

八.部署Node节点

1.拷贝证书
2.Kubelet配置
3.kube-proxy配置

九.部署网络插件

1.部署calico网络插件
2.观察各节点是否部署成功

十.附加组件部署

1.部署CoreDNS
2.部署Metrics Server
3.安装dashboard

十一.彩蛋篇

1.自动补全功能
2.多master管理K8S集群验证
3.验证集群高可用

十二.可能会遇到的报错

1.Invalid CIDR specified in CALICO_IPV4POOL_CIDR 'POD_CIDR'

前置知识: 部署Kubernetes集群的方式

目前生产环境部署kubernetes集群主要由两种方式:
	- kubeadm:
		kubeadm是一个K8S部署工具，提供kubeadm init和kubejoin，用于快速部署kubernetes集群。
	- 二进制部署:
		从GitHub下载发行版的二进制包，手动部署每个组件，组成kubernetes集群。
		
		
除了上述介绍的两种方式部署外，还有其他部署方式的途径:
	- yum: 
		已废弃，目前支持的最新版本为2017年发行的1.5.2版本。
	- minikube:
		适合开发环境，能够快速在Windows或者Linux构建K8S集群。
		参考链接:
			https://minikube.sigs.k8s.io/docs/
	- rancher:
		基于K8S改进发行了轻量级K8S，让K3S孕育而生。
		参考链接:
			https://www.rancher.com/
	- KubeSphere:
		青云科技基于开源KubeSphere快速部署K8S集群。
		参考链接:
			https://kubesphere.com.cn
	- kuboard:
		也是对k8s进行二次开发的产品，新增了很多独有的功能。
		参考链接: 
			https://kuboard.cn/
        - kubeasz:
                使用ansible部署，扩容，缩容kubernetes集群，安装步骤官方文档已经非常详细了。
                参考链接: 
                  https://github.com/easzlab/kubeasz/
			
	- 第三方云厂商:
		比如aws，阿里云，腾讯云，京东云等云厂商均有K8S的相关SAAS产品。

	- 更多的第三方部署工具:
		参考链接:
                    https://landscape.cncf.io/

一.K8S二进制部署准备环境

1.所有节点安装常用的软件包

(1)所有节点CentOS 7安装yum源如下:
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
curl -o /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo


	(2)所有节点安装常用的软件包
yum -y install bind-utils expect rsync wget jq psmisc vim net-tools telnet yum-utils device-mapper-persistent-data lvm2 git ntpdate



将软件包打包命令: (下面这条命令可以跳过，是我用于内网打包软件时使用的哈!)
	mkdir 01-linux-env && find /var/cache/yum -name "*.rpm" | xargs mv -t 01-linux-env/

2.免密钥登录集群并配置同步脚本

(1)设置主机名,各节点参考如下命令修改即可
hostnamectl set-hostname k8s-master01

	(2)所有节点设置相应的主机名及hosts文件解析
cat >> /etc/hosts <<'EOF'
10.0.0.201  k8s-master01
10.0.0.202  k8s-master02
10.0.0.203  k8s-master03
10.0.0.204  k8s-node01
10.0.0.205  k8s-node02
EOF


	(3)将“k8s-master01”节点配置免密码登录其他节点
cat > password_free_login.sh <<'EOF'
#!/bin/bash
# auther: Jason Yin

# 创建密钥对
ssh-keygen -t rsa -P "" -f /root/.ssh/id_rsa -q

# 声明你服务器密码，建议所有节点的密码均一致，否则该脚本需要再次进行优化
export mypasswd=yinzhengjie

# 定义主机列表
k8s_host_list=(k8s-master01 k8s-master02 k8s-master03 k8s-node01 k8s-node02)

# 配置免密登录，利用expect工具免交互输入
for i in ${k8s_host_list[@]};do
expect -c "
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@$i
  expect {
    \"*yes/no*\" {send \"yes\r\"; exp_continue}
    \"*password*\" {send \"$mypasswd\r\"; exp_continue}
  }"
done
EOF
sh password_free_login.sh



	(4)编写同步脚本
cat > /usr/local/sbin/data_rsync.sh <<'EOF'
#!/bin/bash
# Auther: Jason Yin

if  [ $# -ne 1 ];then
   echo "Usage: $0 /path/to/file(绝对路径)"
   exit
fi 

if [ ! -e $1 ];then
    echo "[ $1 ] dir or file not find!"
    exit
fi

fullpath=`dirname $1`

basename=`basename $1`

cd $fullpath

k8s_host_list=(k8s-master01 k8s-master02 k8s-master03 k8s-node01 k8s-node02)

for host in ${k8s_host_list[@]};do
  tput setaf 2
    echo ===== rsyncing ${host}: $basename =====
    tput setaf 7
    rsync -az $basename  `whoami`@${host}:$fullpath
    if [ $? -eq 0 ];then
      echo "命令执行成功!"
    fi
done
EOF
chmod +x /usr/local/sbin/data_rsync.sh


	(5)测试同步脚本是否正常工作
cp /etc/hosts /tmp/
data_rsync.sh /tmp/hosts

3.Linux基础环境优化

(1)所有节点关闭firewalld，selinux，NetworkManager
systemctl disable --now firewalld 
systemctl disable --now NetworkManager
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config


	(2)所有节点关闭swap分区，fstab注释swap
swapoff -a && sysctl -w vm.swappiness=0
sed -ri '/^[^#]*swap/s@^@#@' /etc/fstab
free -h


	(3)所有节点同步时间
		- 手动同步时区和时间
ln -svf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
ntpdate ntp.aliyun.com

		- 定期任务同步("crontab -e")
*/5 * * * * /usr/sbin/ntpdate ntp.aliyun.com


	(4)所有节点配置limit
cat >> /etc/security/limits.conf <<'EOF'
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* soft memlock unlimited
* hard memlock unlimited
EOF


	(5)所有节点优化sshd服务
sed -i 's@#UseDNS yes@UseDNS no@g' /etc/ssh/sshd_config
sed -i 's@^GSSAPIAuthentication yes@GSSAPIAuthentication no@g' /etc/ssh/sshd_config

		- UseDNS选项:
	打开状态下，当客户端试图登录SSH服务器时，服务器端先根据客户端的IP地址进行DNS PTR反向查询出客户端的主机名，然后根据查询出的客户端主机名进行DNS正向A记录查询，验证与其原始IP地址是否一致，这是防止客户端欺骗的一种措施，但一般我们的是动态IP不会有PTR记录，打开这个选项不过是在白白浪费时间而已，不如将其关闭。

		- GSSAPIAuthentication:
	当这个参数开启（ GSSAPIAuthentication  yes ）的时候，通过SSH登陆服务器时候会有些会很慢！这是由于服务器端启用了GSSAPI。登陆的时候客户端需要对服务器端的IP地址进行反解析，如果服务器的IP地址没有配置PTR记录，那么就容易在这里卡住了。
	
	
	
	(6)Linux内核调优
cat > /etc/sysctl.d/k8s.conf <<'EOF'
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv6.conf.all.disable_ipv6 = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl =15
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 327680
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_timestamps = 0
net.core.somaxconn = 16384
EOF
sysctl --system



	(7)修改终端颜色
cat <<EOF >>  ~/.bashrc 
PS1='[\[\e[34;1m\]\u@\[\e[0m\]\[\e[32;1m\]\H\[\e[0m\]\[\e[31;1m\] \W\[\e[0m\]]# '
EOF
source ~/.bashrc

4.所有节点升级Linux内核

(1)下载并安装内核软件包
wget http://193.49.22.109/elrepo/kernel/el7/x86_64/RPMS/kernel-ml-devel-4.19.12-1.el7.elrepo.x86_64.rpm
wget http://193.49.22.109/elrepo/kernel/el7/x86_64/RPMS/kernel-ml-4.19.12-1.el7.elrepo.x86_64.rpm
yum -y localinstall kernel-ml*


	(2)更改内核启动顺序
grub2-set-default  0 && grub2-mkconfig -o /etc/grub2.cfg
grubby --args="user_namespace.enable=1" --update-kernel="$(grubby --default-kernel)"
grubby --default-kernel

	(3)更新软件版本，但不需要更新内核，因为我内核已经更新到了指定的版本
yum -y update --exclude=kernel*

5.所有节点安装ipvsadm以实现kube-proxy的负载均衡

(1)安装ipvsadm等相关工具
yum -y install ipvsadm ipset sysstat conntrack libseccomp 

	(2)手动加载模块
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack

	(3)创建要开机自动加载的模块配置文件
cat > /etc/modules-load.d/ipvs.conf << 'EOF'
ip_vs
ip_vs_lc
ip_vs_wlc
ip_vs_rr
ip_vs_wrr
ip_vs_lblc
ip_vs_lblcr
ip_vs_dh
ip_vs_sh
ip_vs_fo
ip_vs_nq
ip_vs_sed
ip_vs_ftp
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF

	(4)启动模块，如上图所示，这是Linux 3.10.X系列的内核模块，并不是我们需要的!
lsmod | grep --color=auto -e ip_vs -e nf_conntrack


温馨提示:
	Linux kernel 4.19+版本已经将之前的"nf_conntrack_ipv4"模块更名为"nf_conntrack"模块哟~

6.重启所有节点并检查内核和模块是否配置成功

(1)查看现有内核版本
uname -r

(2)检查默认加载的内核版本
grubby --default-kernel

(3)重启所有节点
reboot

(4)检查支持ipvs的内核模块是否加载成功，如上图所示，支持了更多的内核参数。
lsmod | grep --color=auto -e ip_vs -e nf_conntrack

(5)再次查看内核版本
uname -r

二.基础组件安装

1.所有节点部署docker环境

(1)所有节点安装docker
yum -y install docker-ce-19.03.* 

(2)将docker的CgroupDriver改成systemd，并配置镜像加速和私有镜像仓库地址
mkdir /etc/docker
cat > /etc/docker/daemon.json <<EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "registry-mirrors": ["https://registry.docker-cn.com","https://tuv7rqqq.mirror.aliyuncs.com"],
  "insecure-registries": ["k8s-master01:5000","harbor253"],
  "log-driver": "json-file",
  "log-opts": {"max-size": "200m"},
  "storage-driver": "overlay2"
}
EOF

(3)设置开机自启动
systemctl daemon-reload && systemctl enable --now docker
systemctl status docker
docker info | grep "Cgroup Driver"
docker info | grep  "Registry Mirrors" -A 2


温馨提示:
	"https://registry.docker-cn.com"这个是docker在中国区域的镜像仓库，但在教室测试貌似网速部署很好，建议使用阿里源即可，若配置多个也没问题哈。

2.部署etcd和K8S程序

(1)下载K8S，etcd的软件包
# wget https://dl.k8s.io/v1.23.4/kubernetes-server-linux-amd64.tar.gz

wget https://dl.k8s.io/v1.23.15/kubernetes-server-linux-amd64.tar.gz
wget https://github.com/etcd-io/etcd/releases/download/v3.5.2/etcd-v3.5.2-linux-amd64.tar.gz



(2)解压K8S的二进制程序包到PATH环境变量路径
tar -xf kubernetes-server-linux-amd64.tar.gz  --strip-components=3 -C /usr/local/bin kubernetes/server/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy}

(3)解压etcd的二进制程序包到PATH环境变量路径
tar -xf etcd-v3.5.2-linux-amd64.tar.gz --strip-components=1 -C /usr/local/bin etcd-v3.5.2-linux-amd64/etcd{,ctl}

(4)将组建发送到其他节点
MasterNodes='k8s-master02 k8s-master03'
WorkNodes='k8s-node01 k8s-node02'
for NODE in $MasterNodes; do echo $NODE; scp /usr/local/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy} $NODE:/usr/local/bin/; scp /usr/local/bin/etcd* $NODE:/usr/local/bin/; done
for NODE in $WorkNodes; do     scp /usr/local/bin/kube{let,-proxy} $NODE:/usr/local/bin/ ; done


(5)查看kubernetes的版本
kube-apiserver --version
kube-controller-manager --version
kube-scheduler --version
etcdctl version
kubelet --version
kube-proxy --version
kubectl version



(6)所有节点创建工作目录
mkdir -p /opt/cni/bin

(7)切换分支，版本取决于所部署的K8S版本
git clone https://github.com/dotbalo/k8s-ha-install.git
cd k8s-ha-install/
git checkout manual-installation-v1.23.x

三.生成K8S集群证书文件

1.k8s-master01节点下载证书管理工具

(1)k8s-master01节点下载证书管理工具(该证书文件可以提前下载好发给大家即可)
wget "https://pkg.cfssl.org/R1.2/cfssl_linux-amd64" -O /usr/local/bin/cfssl
wget "https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64" -O /usr/local/bin/cfssljson
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson

(2)所有Master节点创建etcd证书目录
mkdir /etc/etcd/ssl -p

(3)所有节点创建kubernetes相关目录
mkdir -p /etc/kubernetes/pki

2.k8s-master01节点生成etcd证书

(1)生成etcd CA证书和CA证书的key
cd /root/k8s-ha-install/pki
cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca


(2)颁发证书
cfssl gencert \
   -ca=/etc/etcd/ssl/etcd-ca.pem \
   -ca-key=/etc/etcd/ssl/etcd-ca-key.pem \
   -config=ca-config.json \
   -hostname=127.0.0.1,k8s-master01,k8s-master02,k8s-master03,10.0.0.201,10.0.0.202,10.0.0.203 \
   -profile=kubernetes \
   etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd

(3)将证书复制到其他节点
MasterNodes='k8s-master02 k8s-master03'

for NODE in $MasterNodes; do
     ssh $NODE "mkdir -p /etc/etcd/ssl"
     for FILE in etcd-ca-key.pem  etcd-ca.pem  etcd-key.pem  etcd.pem; do
       scp /etc/etcd/ssl/${FILE} $NODE:/etc/etcd/ssl/${FILE}
     done
 done

3.k8s组件apiserver相关证书

(1)生成kubernetes证书
cd /root/k8s-ha-install/pki
cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca


(2)生成apiserver的客户端证书
cfssl gencert   -ca=/etc/kubernetes/pki/ca.pem   -ca-key=/etc/kubernetes/pki/ca-key.pem   -config=ca-config.json   -hostname=10.96.0.1,10.0.0.250,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,10.0.0.201,10.0.0.202,10.0.0.203   -profile=kubernetes   apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver

(3)生成apiserver的聚合证书
cfssl gencert   -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca 
cfssl gencert   -ca=/etc/kubernetes/pki/front-proxy-ca.pem   -ca-key=/etc/kubernetes/pki/front-proxy-ca-key.pem   -config=ca-config.json   -profile=kubernetes   front-proxy-client-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-client


温馨提示:
	(1)"10.96.0.0"是k8s service的网段，如果说需要更改k8s service网段，那就需要更改"10.96.0.1";
	(2)如果不是高可用集群，10.0.0.250为Master01的IP，我这里这个是高可用的vip;

4.k8s组件controller manager相关证书

生成 controller-manage的证书
cfssl gencert \
   -ca=/etc/kubernetes/pki/ca.pem \
   -ca-key=/etc/kubernetes/pki/ca-key.pem \
   -config=ca-config.json \
   -profile=kubernetes \
   manager-csr.json | cfssljson -bare /etc/kubernetes/pki/controller-manager


# 注意，如果不是高可用集群，10.0.0.250:6443改为master01的地址，6443改为apiserver的端口，默认是6443
# set-cluster：设置一个集群项
kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://10.0.0.250:6443 \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

# set-credentials 设置一个用户项
kubectl config set-credentials system:kube-controller-manager \
     --client-certificate=/etc/kubernetes/pki/controller-manager.pem \
     --client-key=/etc/kubernetes/pki/controller-manager-key.pem \
     --embed-certs=true \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

# 设置一个环境项，一个上下文
kubectl config set-context system:kube-controller-manager@kubernetes \
    --cluster=kubernetes \
    --user=system:kube-controller-manager \
    --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

# 使用某个环境当做默认环境
kubectl config use-context system:kube-controller-manager@kubernetes \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

5.k8s组件scheduler相关证书

cfssl gencert \
   -ca=/etc/kubernetes/pki/ca.pem \
   -ca-key=/etc/kubernetes/pki/ca-key.pem \
   -config=ca-config.json \
   -profile=kubernetes \
   scheduler-csr.json | cfssljson -bare /etc/kubernetes/pki/scheduler

# 注意，如果不是高可用集群，10.0.0.250:6443改为master01的地址，6443改为apiserver的端口，默认是6443
kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://10.0.0.250:6443 \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config set-credentials system:kube-scheduler \
     --client-certificate=/etc/kubernetes/pki/scheduler.pem \
     --client-key=/etc/kubernetes/pki/scheduler-key.pem \
     --embed-certs=true \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config set-context system:kube-scheduler@kubernetes \
     --cluster=kubernetes \
     --user=system:kube-scheduler \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

kubectl config use-context system:kube-scheduler@kubernetes \
     --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

6.生成admin的证书

cfssl gencert \
   -ca=/etc/kubernetes/pki/ca.pem \
   -ca-key=/etc/kubernetes/pki/ca-key.pem \
   -config=ca-config.json \
   -profile=kubernetes \
   admin-csr.json | cfssljson -bare /etc/kubernetes/pki/admin

# 注意，如果不是高可用集群，10.0.0.250:6443改为master01的地址，6443改为apiserver的端口，默认是6443
kubectl config set-cluster kubernetes     --certificate-authority=/etc/kubernetes/pki/ca.pem     --embed-certs=true     --server=https://10.0.0.250:6443     --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config set-credentials kubernetes-admin     --client-certificate=/etc/kubernetes/pki/admin.pem     --client-key=/etc/kubernetes/pki/admin-key.pem     --embed-certs=true     --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config set-context kubernetes-admin@kubernetes     --cluster=kubernetes     --user=kubernetes-admin     --kubeconfig=/etc/kubernetes/admin.kubeconfig

kubectl config use-context kubernetes-admin@kubernetes     --kubeconfig=/etc/kubernetes/admin.kubeconfig



温馨提示:
	我们用同样的命令生成了admin.kubeconfig，scheduler.kubeconfig，controller-manager.kubeconfig，它们之间是如何区分的？
	
	我们生成的证书会定义一个用户 admin，它是属于 system:masters 这个组，k8s 安装的时候会有一个 clusterrole，它是一个集群角色，相当于一个配置，它有着集群最高的管理权限，同时会创建一个 clusterrolebinding，它会把 admin 绑到 system:masters 这个组上，然后这个组上的所有用户都会有这个集群的权限

7.创建ServiceAccount Key

(1)ServiceAccount是k8s一种认证方式，创建ServiceAccount的时候会创建一个与之绑定的secret，这个secret会生成一个token
openssl genrsa -out /etc/kubernetes/pki/sa.key 2048
openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub


	(2)发送证书至其他节点
for NODE in k8s-master02 k8s-master03; 
  do 
	 for FILE in $(ls /etc/kubernetes/pki | grep -v etcd); 
	 do 
		scp /etc/kubernetes/pki/${FILE} $NODE:/etc/kubernetes/pki/${FILE};
	 done; 
	 for FILE in admin.kubeconfig controller-manager.kubeconfig scheduler.kubeconfig; 
	 do 
		scp /etc/kubernetes/${FILE} $NODE:/etc/kubernetes/${FILE};
	 done;
done


	(3)查看ca证书的有效期
如上图所示，我此处给证书的有效期是100年。

四.二进制高可用及etcd配置

1.创建配置文件

(1)k8s-master01节点的配置文件
cat > /etc/etcd/etcd.config.yml <<'EOF'
name: 'k8s-master01'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.201:2380'
listen-client-urls: 'https://10.0.0.201:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.201:2380'
advertise-client-urls: 'https://10.0.0.201:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.201:2380,k8s-master02=https://10.0.0.202:2380,k8s-master03=https://10.0.0.203:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF


(2)k8s-master02节点的配置文件
cat > /etc/etcd/etcd.config.yml << 'EOF'
name: 'k8s-master02'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.202:2380'
listen-client-urls: 'https://10.0.0.202:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.202:2380'
advertise-client-urls: 'https://10.0.0.202:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.201:2380,k8s-master02=https://10.0.0.202:2380,k8s-master03=https://10.0.0.203:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF


(2)k8s-master03节点的配置文件
cat > /etc/etcd/etcd.config.yml << 'EOF'
name: 'k8s-master03'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.203:2380'
listen-client-urls: 'https://10.0.0.203:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.203:2380'
advertise-client-urls: 'https://10.0.0.203:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.201:2380,k8s-master02=https://10.0.0.202:2380,k8s-master03=https://10.0.0.203:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000