Kubernetes v1.20.15 二进制三主部署

1. 安装说明
Master节点3台兼node节点，高可用工具采用HAProxy + KeepAlived。

2. 节点规划
# 主机名	 IP地址	角色	配置
k8s01	192.168.9.20
k8s02	192.168.9.21
k8s03	192.168.9.22
#虚拟IP  192.168.9.33

3. 系统环境准备
# 所有节点增加hosts记录
cat /etc/hosts
192.168.9.20 k8s01
192.168.9.21 k8s02
192.168.9.22 k8s03

# 常用组件安装
yum install wget jq psmisc vim net-tools telnet yum-utils device-mapper-persistent-data lvm2 git -y

# 更换yum源配置
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=0
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

# 所有节点关闭防火墙、selinux、dnsmasq、swap。服务器配置如下：
systemctl disable --now firewalld 
systemctl disable --now dnsmasq
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

# 关闭swap分区（安装系统前无需swap分区）
swapoff -a && sysctl -w vm.swappiness=0
sed -ri '/^[^#]*swap/s@^@#@' /etc/fstab

# 安装ntpdate或chony
rpm -ivh http://mirrors.wlnmp.com/centos/wlnmp-release-centos.noarch.rpm
yum install ntpdate -y
# 所有节点同步时间配置：
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
echo 'Asia/Shanghai' >/etc/timezone
ntpdate ntp.aliyun.com
# 加入到crontab
*/5 * * * * ntpdate ntp.aliyun.com

yum install chrony.x86_64
systemctl enable --now chronyd

# 所有节点配置limit：
ulimit -SHn 65535

vim /etc/security/limits.conf
# 末尾添加如下内容
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* soft memlock unlimited
* hard memlock unlimited

# k8s01 master节点免密钥登录其他节点：
ssh-keygen -t rsa
for i in k8s01 k8s02 k8s03 ;do ssh-copy-id -i .ssh/id_rsa.pub $i;done

# 所有节点升级系统：
yum update -y

# 所有节点更新内核版本：
# 载入公钥
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
# 安装ELRepo
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
# 载入elrepo-kernel元数据
yum --disablerepo=\* --enablerepo=elrepo-kernel repolist
# 查看可用的rpm包
yum --disablerepo=\* --enablerepo=elrepo-kernel list kernel*
# 安装最新版本的kernel
yum --disablerepo=\* --enablerepo=elrepo-kernel install -y kernel-lt.x86_64
# 删除旧版本工具包
yum remove kernel-tools-libs.x86_64 kernel-tools.x86_64
# 安装新版本工具包
yum --disablerepo=\* --enablerepo=elrepo-kernel install -y kernel-lt-tools.x86_64
# 查看系统上的所有可用内核：
sudo awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
# 通过 grub2-set-default 0 命令设置新内核为默认内核
grub2-set-default 0
# 生成 grub 配置文件并重启
grub2-mkconfig -o /boot/grub2/grub.cfg && reboot

4. 网络环境配置
#所有节点安装ipvsadm等必备组件：
yum install ipvsadm ipset sysstat conntrack libseccomp -y

#所有节点配置ipvs模块
vim /etc/modules-load.d/ipvs.conf
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
##4.19内核版本以下使用 nf_conntrack_ipv4
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip

#加载内核配置
systemctl enable --now systemd-modules-load.service

#所有节点k8s集群中必须的内核参数配置：
cat <<EOF > /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 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

# reboot 并检查内核 lsmod |grep -e ip_vs -e nfs_conntrack

5. 基本组件安装
#所有节点安装Docker-ce
yum list docker-ce --showduplicates | sort -r
yum install docker-ce-19.03.* -y
systemctl enable --now docker

#修改docker配置：
cat <<EOF > /etc/docker/daemon.json
{
    "registry-mirrors": [
       "https://wli8urvv.mirror.aliyuncs.com",
       "https://docker.mirrors.ustc.edu.cn",
       "https://hub-mirror.c.163.com",
       "https://registry.docker-cn.com"
     ],
    "exec-opts": ["native.cgroupdriver=systemd"],
    "log-opts": {
        "max-size": "300m",
        "max-file":"5"
     },
    "max-concurrent-downloads": 10,
    "max-concurrent-uploads": 5,
    "live-restore": true
}
EOF

systemctl daemon-reload && systemctl restart docker

#下载k8s二进制组件
wget https://dl.k8s.io/v1.20.15/kubernetes-server-linux-amd64.tar.gz
#下载etcd安装文件
wget https://github.com/etcd-io/etcd/releases/download/v3.4.23/etcd-v3.4.23-linux-amd64.tar.gz
#解压：
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}
tar -xf etcd-v3.4.23-linux-amd64.tar.gz --strip-components=1 -C /usr/local/bin etcd-v3.4.23-linux-amd64/etcd{,ctl}

#传输至其他节点：
#master节点：（node节点只需kubelet、kube-proxy）
for i in k8s02 k8s03 ;do scp /usr/local/bin/* $i:/usr/local/bin/; done

6. 生成证书
#所有master节点目录创建：
mkdir -p /etc/etcd/ssl 
mkdir -p /etc/kubernetes/pki

#下载cfssl工具制作证书
wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64	&& mv cfssl_linux-amd64 /usr/local/bin/cfssl
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 && mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 && mv cfssl-certinfo_linux-amd64 /usr/local/bin/cfsslinfo
#或
wget https://v.vimll.com:9999/download/cfssl/cfssl{,json,info}
#添加可执行权限：
chmod +x cfssl*

#拉取证书配置文件：
wget https://v.vimll.com:9999/download/k8s/pki.tar.gz
tar xf pki.tar.gz && cd pki

#生成etcd ca证书
cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca

#生成etcd 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,k8s01,k8s02,k8s03,k8s04,k8s05,192.168.9.20,192.168.9.21,192.168.9.22,192.168.9.23,192.168.9.24 \
 -profile=kubernetes \
  etcd-csr.json |cfssljson -bare /etc/etcd/ssl/etcd

#etcd证书分发至其他master节点：
for i in k8s02 k8s03 ;do scp /etc/etcd/ssl/* $i:/etc/etcd/ssl/; done

#生成kubernetes 组件ca证书
cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca

#生成apiserver证书
cfssl gencert \
 -ca=/etc/kubernetes/pki/ca.pem \
 -ca-key=/etc/kubernetes/pki/ca-key.pem \
 -config=ca-config.json \
 -hostname=127.0.0.1,10.96.0.1,192.168.9.33,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,192.168.9.20,192.168.9.21,192.168.9.23,192.168.9.23,192.168.9.24 \
 -profile=kubernetes \
  apiserver-csr.json |cfssljson -bare /etc/kubernetes/pki/apiserver

#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

#生成controller-manager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

#设置集群项 controller-manager set-cluster

KUBE_APISERVER=https://192.168.9.33:16443

kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/pki/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

#设置controller-manager用户项 set-credentials
  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controller-manager环境项，上下文设置 set-context
kubectl config set-context system:kube-controller-manager@kubernetes \
  --cluster=kubernetes \
  --user=system:kube-controller-manager \
  --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

#controller-manager默认使用上下文环境设置
kubectl config use-context system:kube-controller-manager@kubernetes \
  --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

#生成scheduler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

#设置集群项 scheduler set-cluster

KUBE_APISERVER=https://192.168.9.33:16443

kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/pki/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

#设置scheduler用户项 set-credentials
  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

#设置scheduler环境项，上下文设置 set-context
kubectl config set-context system:kube-scheduler@kubernetes \
  --cluster=kubernetes \
  --user=system:kube-scheduler \
  --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

#scheduler默认使用上下文环境设置
kubectl config use-context system:kube-scheduler@kubernetes \
  --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

#生成admin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

#设置集群项 admin set-cluster

KUBE_APISERVER=https://192.168.9.33:16443

kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/pki/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

#设置admin用户项 set-credentials
  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

#设置admin环境项，上下文设置 set-context
kubectl config set-context system:kubernetes-admin@kubernetes \
  --cluster=kubernetes \
  --user=kubernetes-admin \
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

#admin默认上下文环境设置
kubectl config use-context system:kubernetes-admin@kubernetes \
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

#生成serviceaccount key
openssl genrsa -out /etc/kubernetes/pki/sa.key 2048
#生成serviceaccount pub
openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub

#证书及文件分发至其他Master节点
for i in k8s02 k8s03 ;do scp -r /etc/kubernetes/* $i:/etc/kubernetes/; done

7.etcd集群启动
#etcd 启动
# k8s01
cat <<EOF > /etc/etcd/etcd.config.yml
name: 'k8s01'
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://192.168.9.20:2380'
listen-client-urls: 'https://192.168.9.20:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.9.20:2380'
advertise-client-urls: 'https://192.168.9.20:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s01=https://192.168.9.20:2380,k8s02=https://192.168.9.21:2380,k8s03=https://192.168.9.22:2380'
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/etcd/ssl/etcd.pem'
  key-file: '/etc/etcd/ssl/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/etcd/ssl/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/etcd/ssl/etcd.pem'
  key-file: '/etc/etcd/ssl/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/etcd/ssl/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

# k8s02
cat <<EOF > /etc/etcd/etcd.config.yml
name: 'k8s02'
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://192.168.9.21:2380'
listen-client-urls: 'https://192.168.9.21:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.9.21:2380'
advertise-client-urls: 'https://192.168.9.21:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s01=https://192.168.9.20:2380,k8s02=https://192.168.9.21:2380,k8s03=https://192.168.9.22:2380'
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/etcd/ssl/etcd.pem'
  key-file: '/etc/etcd/ssl/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/etcd/ssl/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/etcd/ssl/etcd.pem'
  key-file: '/etc/etcd/ssl/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/etcd/ssl/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

# k8s03
cat <<EOF > /etc/etcd/etcd.config.yml
name: 'k8s03'
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://192.168.9.22:2380'
listen-client-urls: 'https://192.168.9.22:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.9.22:2380'
advertise-client-urls: 'https://192.168.9.22:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s01=https://192.168.9.20:2380,k8s02=https://192.168.9.21:2380,k8s03=https://192.168.9.22:2380'
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/etcd/ssl/etcd.pem'
  key-file: '/etc/etcd/ssl/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/etcd/ssl/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/etcd/ssl/etcd.pem'
  key-file: '/etc/etcd/ssl/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/etcd/ssl/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

#配置systemd管理etcd服务并自启
cat <<EOF > /usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target

[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
Alias=etcd3.service
EOF

systemctl daemon-reload
systemctl enable --now etcd

#查看etcd集群状态
ETCD_ENDPOINTS="https://192.168.9.20:2379,https://192.168.9.21:2379,https://192.168.9.22:2379"
ETCDCTL_API=3
etcdctl --endpoints=$ETCD_ENDPOINTS --cacert=/etc/etcd/ssl/etcd-ca.pem --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem endpoint status --write-out=table

8. 高可用组件安装
#所有Master节点通过yum安装HAProxy和KeepAlived：
yum install keepalived haproxy -y

#所有Master节点配置HAProxy
mv /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak
cat <<EOF >  /etc/haproxy/haproxy.cfg 
global
  maxconn  2000
  ulimit-n  16384
  log  127.0.0.1 local0 err
  stats timeout 30s

defaults
  log global
  mode  http
  option  httplog
  timeout connect 5000
  timeout client  50000
  timeout server  50000
  timeout http-request 15s
  timeout http-keep-alive 15s

frontend monitor-in
  bind *:33305
  mode http
  option httplog
  monitor-uri /monitor

frontend k8s-master
  bind 0.0.0.0:16443
  bind 127.0.0.1:16443
  mode tcp
  option tcplog
  tcp-request inspect-delay 5s
  default_backend k8s-master

backend k8s-master
  mode tcp
  option tcplog
  option tcp-check
  balance roundrobin
  default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
  server k8s01 192.168.9.20:6443  check
  server k8s02 192.168.9.21:6443  check
  server k8s03 192.168.9.22:6443  check
EOF

#所有Master节点配置KeepAlived，配置不一样，注意每个节点的IP和网卡名
#备份原文件
mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

#k8s01节点的配置：
cat <<EOF > /etc/keepalived/keepalived.conf 
! Configuration File for keepalived
global_defs {
    router_id LVS_DEVEL
script_user root
    enable_script_security
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
    interval 5
    weight -5
    fall 2  
rise 1
}
vrrp_instance VI_1 {
    state MASTER
    interface ens192
    mcast_src_ip 192.168.9.20
    virtual_router_id 51
    priority 101
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        192.168.9.33
    }
#    track_script {
#       chk_apiserver
#    }
}
EOF

k8s02节点的配置：
cat <<EOF > /etc/keepalived/keepalived.conf 
! Configuration File for keepalived
global_defs {
    router_id LVS_DEVEL
script_user root
    enable_script_security
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
   interval 5
    weight -5
    fall 2  
rise 1
}
vrrp_instance VI_1 {
    state BACKUP
    interface ens192
    mcast_src_ip 192.168.9.21
    virtual_router_id 51
    priority 100
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        192.168.9.33
    }
#    track_script {
#       chk_apiserver
#    }
}
EOF

k8s03节点的配置：
cat <<EOF > /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
    router_id LVS_DEVEL
script_user root
    enable_script_security
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
 interval 5
    weight -5
    fall 2  
rise 1
}
vrrp_instance VI_1 {
    state BACKUP
    interface ens192
    mcast_src_ip 192.168.9.22
    virtual_router_id 51
    priority 100
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        192.168.9.33
    }
#    track_script {
#       chk_apiserver
#    }
}
EOF

健康检查先关闭，集群建立完成后再开启：

#    track_script {
#       chk_apiserver
#    }

配置KeepAlived健康检查文件：

cat <<EOF > /etc/keepalived/check_apiserver.sh
#!/bin/bash

err=0
for k in $(seq 1 3)
do
    check_code=$(pgrep haproxy)
    if [[ $check_code == "" ]]; then
        err=$(expr $err + 1)
        sleep 1
        continue
    else
        err=0
        break
    fi
done

if [[ $err != "0" ]]; then
    echo "systemctl stop keepalived"
    /usr/bin/systemctl stop keepalived
    exit 1
else
    exit 0
fi
EOF
chmod +x /etc/keepalived/check_apiserver.sh

#启动haproxy和keepalived
systemctl daemon-reload
systemctl enable --now haproxy
systemctl enable --now keepalived
#测试vip
ping 192.168.9.33 -c 4

9.Master节点部署
# master 节点部署 apiserver
# k8s01节点
vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \
      --v=2  \
      --logtostderr=true  \
      --allow-privileged=true  \
      --bind-address=0.0.0.0  \
      --secure-port=6443  \
      --insecure-port=0  \
      --advertise-address=192.168.9.20 \
      --service-cluster-ip-range=10.96.0.0/12  \
      --service-node-port-range=30000-32767  \
      --etcd-servers=https://192.168.9.20:2379,https://192.168.9.21:2379,https://192.168.9.22:2379 \
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \
      --authorization-mode=Node,RBAC  \
      --enable-bootstrap-token-auth=true  \
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \
      --requestheader-allowed-names=aggregator  \
      --requestheader-group-headers=X-Remote-Group  \
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \
      --requestheader-username-headers=X-Remote-User
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

# k8s02节点
vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \
      --v=2  \
      --logtostderr=true  \
      --allow-privileged=true  \
      --bind-address=0.0.0.0  \
      --secure-port=6443  \
      --insecure-port=0  \
      --advertise-address=192.168.9.21 \
      --service-cluster-ip-range=10.96.0.0/12  \
      --service-node-port-range=30000-32767  \
      --etcd-servers=https://192.168.9.20:2379,https://192.168.9.21:2379,https://192.168.9.22:2379 \
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \
      --authorization-mode=Node,RBAC  \
      --enable-bootstrap-token-auth=true  \
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \
      --requestheader-allowed-names=aggregator  \
      --requestheader-group-headers=X-Remote-Group  \
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \
      --requestheader-username-headers=X-Remote-User
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

# k8s03节点
vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \
      --v=2  \
      --logtostderr=true  \
      --allow-privileged=true  \
      --bind-address=0.0.0.0  \
      --secure-port=6443  \
      --insecure-port=0  \
      --advertise-address=192.168.9.22 \
      --service-cluster-ip-range=10.96.0.0/12  \
      --service-node-port-range=30000-32767  \
      --etcd-servers=https://192.168.9.20:2379,https://192.168.9.21:2379,https://192.168.9.22:2379 \
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \
      --authorization-mode=Node,RBAC  \
      --enable-bootstrap-token-auth=true  \
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \
      --requestheader-allowed-names=aggregator  \
      --requestheader-group-headers=X-Remote-Group  \
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \
      --requestheader-username-headers=X-Remote-User
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

systemctl daemon-reload && systemctl enable --now kube-apiserver.service

# master节点 controller-manager 部署
vim /usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-controller-manager \
    --v=2 \
    --logtostderr=true \
    --address=127.0.0.1 \
    --root-ca-file=/etc/kubernetes/pki/ca.pem \
    --cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem \
    --cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem \
    --service-account-private-key-file=/etc/kubernetes/pki/sa.key \
    --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig \
    --leader-elect=true \
    --use-service-account-credentials=true \
    --node-monitor-grace-period=40s \
    --node-monitor-period=5s \
    --pod-eviction-timeout=2m0s \
    --controllers=*,bootstrapsigner,tokencleaner \
    --allocate-node-cidrs=true \
    --cluster-cidr=10.128.0.0/12 \
    --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem \
    --node-cidr-mask-size=24 \
    --cluster-signing-duration=87600h0m0s

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

systemctl daemon-reload && systemctl enable --now kube-controller-manager.service

# master节点 scheduler 部署 
vim /usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-scheduler \
    --v=2 \
    --logtostderr=true \
    --address=127.0.0.1 \
    --leader-elect=true \
    --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

systemctl daemon-reload && systemctl enable --now kube-scheduler.service

10.TLS Bootstrapping 配置
# k8s01节点操作即可
KUBE_APISERVER=https://192.168.9.33:16443

kubectl config set-cluster kubernetes \
  --certificate-authority=/etc/kubernetes/pki/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

wget https://v.vimll.com:9999/download/k8s/bootstrap.secret.yaml
## 修改 bootstrap.secret.yaml   token-id与token-secret与bootstrap-token-c8ad9c

##BOOTSTRAP_TOKEN=上述文件中token-id.token-secret
BOOTSTRAP_TOKEN=d8ec9b.8e5d61dcf3879d6e

kubectl config set-credentials tls-bootstrap-token-user \
  --token=${BOOTSTRAP_TOKEN} \
  --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
 
kubectl config set-context tls-bootstrap-token-user@kubernetes \
  --cluster=kubernetes \
  --user=tls-bootstrap-token-user \
  --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig
 
kubectl config use-context tls-bootstrap-token-user@kubernetes \
  --kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

## kubectl 配置
mkdir -p /root/.kube ;cp /etc/kubernetes/admin.kubeconfig /root/.kube/config

kubectl  create -f bootstrap.secret.yaml


11. NODE节点配置
## master节点兼worker节点证书与文件同步可排除admin.kubeconfig以外所有。
for i in k8s02 k8s03 ;do scp -r /etc/kubernetes/* $i:/etc/kubernetes/; done

## worker节点只需同步 pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig
for i in k8s02 k8s03 ;do scp /etc/kubernetes/bootstrap-kubelet.kubeconfig $i:/etc/kubernetes; done
for i in k8s02 k8s03 ;do scp /etc/kubernetes/pki/{ca.pem,ca-key.pem,front-proxy-ca.pem} $i:/etc/kubernetes/pki; done

#所有节点创建组件工作相关目录
mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes

# 所有节点创建 kubelet.service
vim /usr/lib/systemd/system/kubelet.service

[Unit]
Description=kubelet: The Kubernetes Node Agent
Documentation=https://kubernetes.io/docs/
Wants=network-online.target
After=network-online.target
##After=docer.service 高版本可选择其他容器服务
Requires=docker.service

[Service]
ExecStart=/usr/local/bin/kubelet
Restart=always
StartLimitInterval=0
RestartSec=10

[Install]
WantedBy=multi-user.target

#所有节点配置kubelet.service的配置文件
cat >  /etc/systemd/system/kubelet.service.d/10-kubelet.conf << EOF
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig --kubeconfig=/etc/kubernetes/kubelet.kubeconfig"
Environment="KUBELET_SYSTEM_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_CONFIG_ARGS=--config=/etc/kubernetes/kubelet-conf.yml --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.6"
Environment="KUBELET_EXTRA_ARGS=--node-labels=node.kubernetes.io/node='' --tls-cipher-suites=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 --image-pull-progress-deadline=30m"
ExecStart=
ExecStart=/usr/local/bin/kubelet \$KUBELET_KUBECONFIG_ARGS \$KUBELET_CONFIG_ARGS \$KUBELET_SYSTEM_ARGS \$KUBELET_EXTRA_ARGS
EOF

## 所有节点增加配置文件 /etc/kubernetes/kubelet-conf.yml
cat > /etc/kubernetes/kubelet-conf.yml <<EOF
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
authentication:
  anonymous:
    enabled: false
  webhook:
    cacheTTL: 2m0s
    enabled: true
  x509:
    clientCAFile: /etc/kubernetes/pki/ca.pem
authorization:
  mode: Webhook
  webhook:
    cacheAuthorizedTTL: 5m0s
    cacheUnauthorizedTTL: 30s
cgroupDriver: systemd
cgroupsPerQOS: true
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
containerLogMaxFiles: 5
containerLogMaxSize: 10Mi
contentType: application/vnd.kubernetes.protobuf
cpuCFSQuota: true
cpuManagerPolicy: none
cpuManagerReconcilePeriod: 10s
enableControllerAttachDetach: true
enableDebuggingHandlers: true
enforceNodeAllocatable:
- pods
eventBurst: 10
eventRecordQPS: 5
evictionHard:
  imagefs.available: 15%
  memory.available: 100Mi
  nodefs.available: 10%
  nodefs.inodesFree: 5%
evictionPressureTransitionPeriod: 5m0s
failSwapOn: true
fileCheckFrequency: 20s
hairpinMode: promiscuous-bridge
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 20s
imageGCHighThresholdPercent: 85
imageGCLowThresholdPercent: 80
imageMinimumGCAge: 2m0s
iptablesDropBit: 15
iptablesMasqueradeBit: 14
kubeAPIBurst: 10
kubeAPIQPS: 5
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
nodeStatusUpdateFrequency: 10s
oomScoreAdj: -999
podPidsLimit: -1
registryBurst: 10
registryPullQPS: 5
resolvConf: /etc/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 2m0s
serializeImagePulls: true
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 4h0m0s
syncFrequency: 1m0s
volumeStatsAggPeriod: 1m0s
EOF

systemctl daemon-reload && systemctl enable --now kubelet.service

## kube-proxy配置
# k8s01节点操作

kubectl -n kube-system create serviceaccount kube-proxy

kubectl create clusterrolebinding system:kube-proxy \
--clusterrole system:node-proxier \
--serviceaccount kube-system:kube-proxy

SECRET=$(kubectl -n kube-system get sa/kube-proxy \
    --output=jsonpath='{.secrets[0].name}')

JWT_TOKEN=$(kubectl -n kube-system get secret/$SECRET \
--output=jsonpath='{.data.token}' | base64 -d)

kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/pki/ca.pem \
--embed-certs=true \
--server=https://192.168.9.33:16443 \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

kubectl config set-credentials kubernetes \
--token=${JWT_TOKEN} \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

kubectl config set-context kubernetes \
--cluster=kubernetes \
--user=kubernetes \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

kubectl config use-context kubernetes \
--kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig

# 将kube-proxy.kubeconfig发送至其他节点
for i in k8s02 k8s03 ;do scp /etc/kubernetes/kube-proxy.kubeconfig $i:/etc/kubernetes; done

##所有k8s节点添加kube-proxy的service文件和kube-proxy.yaml配置文件
cat >  /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-proxy \
  --config=/etc/kubernetes/kube-proxy.yaml \
  --v=2

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target
EOF

## kube-proxy.yaml配置文件
cat > /etc/kubernetes/kube-proxy.yaml << EOF
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:
  acceptContentTypes: ""
  burst: 10
  contentType: application/vnd.kubernetes.protobuf
  kubeconfig: /etc/kubernetes/kube-proxy.kubeconfig
  qps: 5
clusterCIDR: 10.128.0.0/12
configSyncPeriod: 15m0s
conntrack:
  max: null
  maxPerCore: 32768
  min: 131072
  tcpCloseWaitTimeout: 1h0m0s
  tcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: ""
iptables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 0s
  syncPeriod: 30s
ipvs:
  masqueradeAll: true
  minSyncPeriod: 5s
  scheduler: "rr"
  syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: "ipvs"
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
udpIdleTimeout: 250ms
EOF

systemctl daemon-reload && systemctl enable --now kube-proxy.service


12.calico 安装
## k8s01节点操作
wget https://v.vimll.com:9999/download/k8s/calico-etcd.yaml

sed -i 's#etcd_endpoints: "http://<ETCD_IP>:<ETCD_PORT>"#etcd_endpoints: "https://192.168.9.20:2379,https://192.168.9.21:2379,https://192.168.9.22:2379"#g' calico-etcd.yaml

ETCD_CA=`cat /etc/etcd/ssl/etcd-ca.pem | base64 | tr -d '\n'`
ETCD_CERT=`cat /etc/etcd/ssl/etcd.pem | base64 | tr -d '\n'`
ETCD_KEY=`cat /etc/etcd/ssl/etcd-key.pem | base64 | tr -d '\n'`

sed -i "s@# etcd-key: null@etcd-key: ${ETCD_KEY}@g; s@# etcd-cert: null@etcd-cert: ${ETCD_CERT}@g; s@# etcd-ca: null@etcd-ca: ${ETCD_CA}@g" calico-etcd.yaml

sed -i 's#etcd_ca: ""#etcd_ca: "/calico-secrets/etcd-ca"#g; s#etcd_cert: ""#etcd_cert: "/calico-secrets/etcd-cert"#g; s#etcd_key: "" #etcd_key: "/calico-secrets/etcd-key" #g' calico-etcd.yaml

POD_SUBNET=`cat /usr/lib/systemd/system/kube-controller-manager.service | grep cluster-cidr= | awk -F= '{print $NF}'|awk '{print $1}'`

sed -i 's@# - name: CALICO_IPV4POOL_CIDR@- name: CALICO_IPV4POOL_CIDR@g; s@#   value: "192.168.0.0/16"@  value: '"${POD_SUBNET}"'@g' calico-etcd.yaml

## 创建calico
kubectl apply -f calico-etcd.yaml

13.coredns、Metrics Server、Dashboard 部署
## k8s01节点操作
## coredns部署
wget https://v.vimll.com:9999/download/k8s/coredns.yaml
## 修改 coredns.yaml  clusterIP为集群设置的IP. 例： clusterIP: 10.96.0.10
#创建coredns服务
kubectl apply -f coredns.yaml

## Metrics Server部署
Metrics采集节点和Pod的内存、磁盘、CPU和网络的使用率,将k8s01节点的front-proxy-ca.crt复制到所有Node节点
for i in k8s02 k8s03 ;do scp /etc/kubernetes/pki/front-proxy-ca.crt $i:/etc/kubernetes/pki; done

## metrics server部署
kubectl  create -f https://v.vimll.com:9999/download/k8s/metrics-server-comp.yaml 
#验证
kubectl  top node
NAME    CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%
k8s01   134m         6%     2212Mi          57%
k8s02   114m         5%     1447Mi          37%
k8s03   115m         5%     1454Mi          37%

## Dashboard部署
kubectl  create -f https://v.vimll.com:9999/download/k8s/dashboard-user.yaml
kubectl  create -f https://v.vimll.com:9999/download/k8s/dashboard.yaml
#在谷歌浏览器（Chrome）启动文件中加入启动参数，用于解决无法访问Dashboard的问题: --test-type --ignore-certificate-errors
#更改dashboard的svc为NodePort 可使用主机IP加端口来访问dashboard,将type: ClusterIP更改为type: NodePort
kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
kubectl get svc kubernetes-dashboard -n kubernetes-dashboard
NAME                   TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)         AGE
kubernetes-dashboard   NodePort   10.102.250.85   <none>        443:30804/TCP   6m25s
## https://192.168.9.20:30804 浏览器直接访问
##获取dashboard登录token
kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')
#将token值输入Kubernetes仪表盘中的Token项，单击登录即可.