kubernetes高可用集群安装（二进制安装、v1.20.2版）-优快云博客

一、1.kubernetes的五个组件

master节点的三个组件
kube-apiserver
整个集群的唯一入口，并提供认证、授权、访问控制、API注册和发现等机制。
kube-controller-manager (控制器管理器)
负责维护集群的状态，比如故障检测、自动扩展、滚动更新等。保证资源到达期望值。
kube-scheduler
调度器
经过策略调度POD到合适的节点上面运行。分别有预选策略和优选策略。
node节点的两个组件
kubelet
在集群节点上运行的代理，kubelet会通过各种机制来确保容器处于运行状态且健康。kubelet不会管理不是由kubernetes创建的容器。kubelet接收POD的期望状态(副本数、镜像、网络等)，并调用容器运行环境来实现预期状态。
kubelet会定时汇报节点的状态给apiserver，作为scheduler调度的基础。kubelet会对镜像和容器进行清理，避免不必要的文件资源占用。
kube-proxy
kube-proxy是集群中节点上运行的网络代理，是实现service资源功能组件之一。kube-proxy建立了POD网络和集群网络之间的关系。不同node上的service流量转发规则会通过kube-proxy来调用apiserver访问etcd进行规则更新。
service流量调度方式有三种方式：userspace(废弃，性能很差)、iptables(性能差，复杂，即将废弃)、ipvs(性能好，转发方式清晰)。

2.集群架构

虚拟机	主机名	IP地址	部署规划
虚拟机-1	km1	10.252.4.11	apiserver、controller-manager、scheduler、nginx、keepalived、docker、ca、harbor、etcd
虚拟机-2	km2	10.252.4.12	apiserver、controller-manager、scheduler、etcd、nginx、keepalived、docker
虚拟机-3	kn1	10.252.4.13	kubelet、proxy、docker、bind
虚拟机-4	kn2	10.252.4.14	kubelet、proxy、etcd、docker
VIP	负载均衡	10.252.4.10

3.操作系统环境配置

# 关闭防火墙
]# systemctl stop firewalld
]# systemctl disable firewalld

# 关闭selinux
]# sed -i 's/enforceing/disabled' /etc/selinux/config

# 清空iptalbes
]# iptables -F 
]# iptables-save

# 设置主机名
]# hostnamectl set-hostname 名字   

# 安装辅助工具
]# yum  -y install wget net-tools telnet tree nmap sysstat lrzsz dos2unix bind-utils

# 设置yum源
]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
]# yum makecache fast

# 安装epel-release
]# yum -y install epel-release

# 时间同步
]# yum -y install nptdate
]# nptdate time.windows.com
# 修改内核参数

cat > /etc/sysctl.d/k8s.conf << EOF
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system

#  加载ipvs模块

modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
lsmod | grep ip_vs
lsmod | grep nf_conntrack_ipv4
yum install -y ipvsadm

#  修改系统环境变量

# echo "export PATH=$PATH:/usr/local/bin/" >> /etc/profile
# . /etc/profile

二、部署bind服务

1.安装配置bind服务

# 安装bind9
]# yum -y install bind

# 修改配置文件
]# vim /etc/named.conf
options {
        listen-on port 53 { 10.252.4.13; };   #  修改IP地址位本机地址
        directory       "/var/named";
        dump-file       "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
        recursing-file  "/var/named/data/named.recursing";
        secroots-file   "/var/named/data/named.secroots";
        allow-query     { any; };     # 修改此处为any，表示任何人都可以通过我来解析dns
        forwarders      { 10.252.4.254; }; # 上一级解析地址
        recursion yes;                 # 改为yes，表示dns使用递归的算法进行dns查询
        dnssec-enable no;
        dnssec-validation no;
        
# 启动服务
]# systemctl start named

# 查看
 ]# netstat -anpt |grep 53
tcp        0      0 10.252.4.13:53        0.0.0.0:*                 LISTEN      27683/named
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN      27683/named

2.编辑区域配置文件

]# vim /etc/named.rfc1912.zones
# 在最后添加以下内容：
zone "zgq.com" IN {
		type  master;
		file  "zgq.com.zone";
		allow-update { 10.252.4.13; };
};
zone "zjh.com" IN {
		type  master;
		file  "zjh.com.zone";
		allow-update { 10.252.4.13; };
};

3.编辑区域数据文件

]# vim /var/named/zgq.com.zone
$ORIGIN zgq.com.
$TTL 600	; 10 minutes
@       IN SOA  dns.zgq.com. dnsadmin.zgq.com. (
                                        2021091801  ; serial
                                        10800       ; refresh
                                        900		    ; retry
                                        604800      ; expire
                                        86400 )     ; minimum
                        NS      dns.lxq.com.
dns                     A       10.252.4.13
harbor                  A       10.252.4.11
km1                     A       10.252.4.11
km2      		        A       10.252.4.12
kn1                     A       10.252.4.13
kn2                     A       10.252.4.14


]# vim /var/named/zjh.com.zone
$ORIGIN zjh.com.
$TTL 1D
@       IN SOA  dns.zjh.com. dnsadmin.zjh.com. (
                                        2021091801  ; serial
                                        10800       ; refresh
                                        900		    ; retry
                                        604800      ; expire
                                        86400 )     ; minimum
                        NS      dns.zjh.com.
dns                     A       10.252.4.13
harbor					A		10.252.4.11

#检查配置文件并重启
]# named-checkconf
]# systemctl restart named

4.验证DNS服务是否生效

]# dig -t A km1.zgq.com @10.252.4.13 +short
10.252.4.11

# 解析成功

5.修改网卡配置文件

# 修改所有主机里的网卡配置文件。使DNS解析都走自建DNS服务器
]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=10.252.4.13
NETMASK=255.255.255.0
GATEWAY=10.252.4.254
DNS1=10.252.4.13    #  修改为DNS服务部署主机地址

]# vim /etc/resolv.conf
nameserver 10.252.4.13

]# systemctl disable --now NetworkManager
]# systemctl restart network

三、部署harbor私有仓库

1 安装Docker

# 因为Master和Work节点都需要Docker，在这里就一块都先安装了
# 1.卸载旧版本
]# yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

# 2.安装相关软件包
]# yum install -y yum-utils

# 3.设置镜像仓库
]# yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo     #  默认是国外的，不建议使用
]# yum-config-manager \
    --add-repo \
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo  #   建议使用国内阿里云镜像

# 4.更新yum软件包索引
]# yum makecache fast

# 5.开始安装Docker
]# yum -y install docker-ce docker-ce-cli containerd.io

# 6.启动Dcoker
]# systemctl start docker
]# systemctl enable docker

# 7.使用Docker version是否安装成功
]# docker version


# 配置/etc/docker/daemon.json文件
]# vim /etc/docker/daemon.json
{
  "graph": "/var/lib/docker",
  "storage-driver": "overlay2",
  "insecure-registries": ["registry.access.redhat.com","quay.io","harbor.zjh.com"],
  "registry-mirrors": ["https://erbrwkgk.mirror.aliyuncs.com"],
  "bip": "172.7.100.1/24",
  "exec-opts": ["native.cgroupdriver=cgroupfs"],
  "live-restore": true
}

# 加载配置文件
]# systemctl daemon-reload

# 重启Docker
]# systemctl restart docker

2 安装Docker-Compose

# 安装harbor需要docker-compose的支撑
]# yum -y install docker-compose

3 下载部署Harbor

查看代码

# 下载harbor 
]# wget -O https://github.com/goharbor/harbor/releases/download/v2.0.6/harbor-offline-installer-v2.0.6.tgz   /opt/
]# ll
-rw-r--r--  1 root root 558003770 9月  18 13:48 harbor-offline-installer-v2.0.6.tgz

# 解压harbor软件包到/opt下
]# tar xf harbor-offline-installer-v2.0.6.tgz -C /opt

# 改名做个软链接
]# mv /opt/harbor  /opt/harbor-v2.0.6
]# ln -s /opt/harbor-v2.0.6 /opt/harbor

# 新建harbor数据存放目录
]# mkdir  -p /data/harbor

# 修改harbor配置文件harbor.yml，默认文件名是harbor.yml.tmpl，复制一份进行修改
]# vim harbor.yml
hostname: harbor.od.com    # 修改主机名
http:
  port: 800                # 修改端口
#https:                    # 注释掉https，因为没有证书，不注释会安装不成功
 # port: 443
  #certificate: /your/certificate/path
  #private_key: /your/private/key/path
# Remember Change the admin password from UI after launching Harbor.
harbor_admin_password: Harbor12345      # 管理员密码
# The default data volume
data_volume: /data/harbor               # 数据存放路径
location: /data/harbor/logs             # 日志存放路径

# 安装harbor
]# ./install.sh

# 报错1
ERROR:root:Error: The protocol is https but attribute ssl_cert is not set
## 这是因为配置文件中没有把https注释掉！！(滑稽老是忘...)
https:
  port: 443
  certificate: /your/certificate/path
  private_key: /your/private/key/path
  
  
  
Generated configuration file: /compose_location/docker-compose.yml
Clean up the input dir


Creating harbor-db ... done
Creating harbor-core ... done
Creating network "harborv206_harbor" with the default driver
Creating nginx ... done
Creating registry ...
Creating redis ...
Creating registryctl ...
Creating harbor-portal ...
Creating harbor-db ...
Creating harbor-core ...
Creating harbor-jobservice ...
Creating nginx ...
✔ ----Harbor has been installed and started successfully.----
# 安装完成

# 验证，服务都已经起来了
]# docker-compose ps
      Name                     Command               State                   Ports
---------------------------------------------------------------------------------------------------
harbor-core         /harbor/entrypoint.sh            Up
harbor-db           /docker-entrypoint.sh            Up      5432/tcp
harbor-jobservice   /harbor/entrypoint.sh            Up
harbor-log          /bin/sh -c /usr/local/bin/ ...   Up      127.0.0.1:1514->10514/tcp
harbor-portal       nginx -g daemon off;             Up      8080/tcp
nginx               nginx -g daemon off;             Up      0.0.0.0:800->8080/tcp,:::800->8080/tcp
redis               redis-server /etc/redis.conf     Up      6379/tcp
registry            /home/harbor/entrypoint.sh       Up      5000/tcp
registryctl         /home/harbor/start.sh            Up

# 启动停止命令
]# docker-compose stop
]# docker-compose up -d

四、部署Master服务

Etcd是一个分布式键值存储数据库，K8S使用Etcd进行存放数据，Etcd单点部署没有冗余性，所以我们采用集群的方式部署，Etcd集群部署最少3个节点，保证可以有一个节点故障！

1 准备cfssl证书生成工具

# 下载工具
]# wget -O https://pkg.cfssl.org/R1.2/cfssl_linux-amd64  
]# wget -O https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
]# wget -O https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
]# cp cfssl_linux-amd64 /usr/bin/cfssl
]# cp cfssljson_linux-amd64 /usr/bin/cfssljson
]# cp cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo
]# chmod +x /usr/bin/cfssl*

2 生成Etcd证书

2.1 构建自签证书颁发机构

配置etcd工作目录
]# mkdir -p /etc/etcd                     # 配置文件存放目录
]# mkdir -p /etc/etcd/ssl               # 证书文件存放目录

配置ca请求文件

]# cat ca-csr.json 
{
  "CN": "kubernetes",
  "key": {
      "algo": "rsa",
      "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "beijing",
      "O": "k8s",
      "OU": "system"
    }
  ],
  "ca": {
          "expiry": "175200h"
  }
}


注：
CN：Common Name，kube-apiserver 从证书中提取该字段作为请求的用户名 (User Name)；浏览器使用该字段验证网站是否合法；
O：Organization，kube-apiserver 从证书中提取该字段作为请求用户所属的组 (Group)

创建ca证书

[root@km1 work]# cfssl gencert -initca ca-csr.json  | cfssljson -bare ca -


配置ca证书策略

]# cat ca-config.json
{
  "signing": {
      "default": {
          "expiry": "175200h"
        },
      "profiles": {
          "kubernetes": {
              "usages": [
                  "signing",
                  "key encipherment",
                  "server auth",
                  "client auth"
              ],
              "expiry": "175200h"
          }
      }
  }
}


配置etcd请求csr文件

]# vim etcd-csr.json
{
  "CN": "etcd",
  "hosts": [
    "127.0.0.1",
    "10.252.4.11",
    "10.252.4.12",
    "10.252.4.14"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [{
    "C": "CN",
    "ST": "Beijing",
    "L": "Beijing",
    "O": "k8s",
    "OU": "system"
  }]
}


生成证书

]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes etcd-csr.json | cfssljson  -bare etcd
]# ls etcd*.pem

2.2 部署etcd集群

查看代码

[root@km1 work]# wget https://github.com/etcd-io/etcd/releases/download/v3.4.13/etcd-v3.4.13-linux-amd64.tar.gz
[root@km1 work]# tar -xf etcd-v3.4.13-linux-amd64.tar.gz 
[root@km1 work]# cp -p etcd-v3.4.13-linux-amd64/etcd* /usr/local/bin/
[root@km1 work]# rsync -vaz etcd-v3.4.13-linux-amd64/etcd* kn2:/usr/local/bin/


1>. 创建配置文件

[root@km1 work]# vim /etc/etcd/etcd.conf
#[Member]
ETCD_NAME="etcd1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.252.4.11:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.252.4.11:2379,http://127.0.0.1:2379"

#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.252.4.11:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.252.4.11:2379"
ETCD_INITIAL_CLUSTER="etcd1=https://10.252.4.11:2380,etcd2=https://10.252.4.12:2380,etcd3=https://10.252.4.14:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"


注：
ETCD_NAME：节点名称，集群中唯一
ETCD_DATA_DIR：数据目录
ETCD_LISTEN_PEER_URLS：集群通信监听地址
ETCD_LISTEN_CLIENT_URLS：客户端访问监听地址
ETCD_INITIAL_ADVERTISE_PEER_URLS：集群通告地址
ETCD_ADVERTISE_CLIENT_URLS：客户端通告地址
ETCD_INITIAL_CLUSTER：集群节点地址
ETCD_INITIAL_CLUSTER_TOKEN：集群Token
ETCD_INITIAL_CLUSTER_STATE：加入集群的当前状态，new是新集群，existing表示加入已有集群

2>. 创建启动服务文件

[root@km1 work]# vim /usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
EnvironmentFile=-/etc/etcd/etcd.conf
WorkingDirectory=/var/lib/etcd/
ExecStart=/usr/local/bin/etcd \
  --cert-file=/etc/etcd/ssl/etcd.pem \
  --key-file=/etc/etcd/ssl/etcd-key.pem \
  --trusted-ca-file=/etc/etcd/ssl/ca.pem \
  --peer-cert-file=/etc/etcd/ssl/etcd.pem \
  --peer-key-file=/etc/etcd/ssl/etcd-key.pem \
  --peer-trusted-ca-file=/etc/etcd/ssl/ca.pem \
  --peer-client-cert-auth \
  --client-cert-auth
Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target


3>. 同步相关文件到各个节点

[root@km1 work]# cp ca*.pem etcd*.pem /etc/etcd/ssl/
[root@km1 work]# cp etcd.conf /etc/etcd/
[root@km1 work]# cp etcd.service /usr/lib/systemd/system/
[root@km1 work]# scp ca*.pem etcd*.pem km2:/etc/etcd/ssl/
[root@km1 work]# scp etcd.conf km2:/etc/etcd/ 
[root@km1 work]# scp etcd.service km2:/usr/lib/systemd/system/
[root@km1 work]# scp ca*.pem etcd*.pem kn:/etc/etcd/ssl/
[root@km1 work]# scp etcd.conf kn:/etc/etcd/
[root@km1 work]# scp etcd.service kn:/usr/lib/systemd/system/


注：km2和kn分别修改配置文件中etcd名字和ip，并创建目录 /var/lib/etcd/default.etcd

启动etcd集群<km1、km2和kn分别执行以下命令>

[root@km1 work]# mkdir -p /var/lib/etcd/default.etcd
[root@km1 work]# systemctl daemon-reload
[root@km1 work]# systemctl enable --now etcd.service     注：同时启动三个节点
[root@km1 work]# systemctl status etcd.service



4>. 查看集群状态
查看集群的详细状态
# etcdctl endpoint status --endpoints https://10.252.4.11:2379,https://10.252.4.12:2379,https://10.252.4.14:2379 --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --cacert=/etc/etcd/ssl/ca.pem  --write-out=table

+--------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
|         ENDPOINT         |        ID        | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+--------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| https://10.252.4.11:2379 | f4c68a292dca8ac7 |  3.4.13 |   20 kB |     false |      false |         2 |         10 |                 10 |        |
| https://10.252.4.12:2379 |  ce919ece5ff69db |  3.4.13 |   20 kB |      true |      false |         2 |         10 |                 10 |        |
| https://10.252.4.14:2379 | 78a593c0570aa8df |  3.4.13 |   20 kB |     false |      false |         2 |         10 |                 10 |        |
+--------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+

# 注意！！不加--endpoint参数时。默认访问的时127.0.0.1:2379
# 如果加上--endpoint参数就必须指定证书！！！

5>. 查看集群健康状态
# etcdctl endpoint health --endpoints https://10.252.4.11:2379,https://10.252.4.12:2379,https://10.252.4.14:2379 --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --cacert=/etc/etcd/ssl/ca.pem  --write-out=table

+--------------------------+--------+-------------+-------+
|         ENDPOINT         | HEALTH |    TOOK     | ERROR |
+--------------------------+--------+-------------+-------+
| https://10.252.4.12:2379 |   true | 19.613474ms |       |
| https://10.252.4.11:2379 |   true | 23.006774ms |       |
| https://10.252.4.14:2379 |   true | 23.908505ms |       |
+--------------------------+--------+-------------+-------+


6>. 查看节点信息
# etcdctl member list --endpoints https://10.252.4.11:2379,https://10.252.4.12:2379,https://10.252.4.14:2379 --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --cacert=/etc/etcd/ssl/ca.pem  --write-out=table

+------------------+---------+-------+--------------------------+--------------------------+------------+
|        ID        | STATUS  | NAME  |        PEER ADDRS        |       CLIENT ADDRS       | IS LEARNER |
+------------------+---------+-------+--------------------------+--------------------------+------------+
|  ce919ece5ff69db | started | etcd2 | https://10.252.4.12:2380 | https://10.252.4.12:2379 |      false |
| 78a593c0570aa8df | started | etcd3 | https://10.252.4.14:2380 | https://10.252.4.14:2379 |      false |
| f4c68a292dca8ac7 | started | etcd1 | https://10.252.4.11:2380 | https://10.252.4.11:2379 |      false |
+------------------+---------+-------+--------------------------+--------------------------+------------+

2.3 apiserver部署 (master节点)
2.3.1 下载安装包

[root@km1 work]# wget https://dl.k8s.io/v1.20.1/kubernetes-server-linux-amd64.tar.gz
[root@km1 work]# tar -xf kubernetes-server-linux-amd64.tar
[root@km1 work]# cd kubernetes/server/bin/
[root@km1 bin]# cp kube-apiserver kube-controller-manager kube-scheduler /usr/local/bin/
[root@km1 bin]# scp kube-apiserver kube-controller-manager kube-scheduler km2:/usr/local/bin/
[root@km1 bin]# scp kubelet kube-proxy kn:/usr/local/bin/
[root@km1 bin]# cd /data/work/

2.3.2 创建工作目录<km1\km2>

[root@km1 work]# mkdir -p /etc/kubernetes/ # kubernetes组件配置文件存放目录
[root@km1 work]# mkdir -p /etc/kubernetes/ssl # kubernetes组件证书文件存放目录
[root@km1 work]# mkdir /var/log/kubernetes # kubernetes组件日志文件存放目录

2.3.3 部署api-server
创建csr请求文件

[root@km1 work]# vim kube-apiserver-csr.json
{
"CN": "kubernetes",
"hosts": [
"127.0.0.1",
"10.252.4.11",
"10.252.4.12",
"10.252.4.10",
"10.255.0.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "k8s",
"OU": "system"
}
]
}

注：
如果 hosts 字段不为空则需要指定授权使用该证书的 IP 或域名列表。
由于该证书后续被 kubernetes master 集群使用，需要将master节点的IP都填上，同时还需要填写 service 网络的首个IP。(一般是 kube-apiserver 指定的 service-cluster-ip-range 网段的第一个IP，如 10.255.0.1)

2.3.4 生成证书和token文件

[root@km1 work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-apiserver-csr.json | cfssljson -bare kube-apiserver
[root@km1 work]# cat > token.csv << EOF
$(head -c 16 /dev/urandom | od -An -t x | tr -d ' '),kubelet-bootstrap,10001,"system:kubelet-bootstrap"
EOF

2.3.5 创建配置文件

[root@km1 work]# vim kube-apiserver.conf
KUBE_APISERVER_OPTS="--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction \
--anonymous-auth=false \
--bind-address=10.252.4.11 \
--secure-port=6443 \
--advertise-address=10.252.4.11 \
--authorization-mode=Node,RBAC \
--runtime-config=api/all=true \
--enable-bootstrap-token-auth \
--service-cluster-ip-range=10.255.0.0/16 \
--token-auth-file=/etc/kubernetes/token.csv \
--service-node-port-range=30000-50000 \
--tls-cert-file=/etc/kubernetes/ssl/kube-apiserver.pem \
--tls-private-key-file=/etc/kubernetes/ssl/kube-apiserver-key.pem \
--client-ca-file=/etc/kubernetes/ssl/ca.pem \
--kubelet-client-certificate=/etc/kubernetes/ssl/kube-apiserver.pem \
--kubelet-client-key=/etc/kubernetes/ssl/kube-apiserver-key.pem \
--service-account-key-file=/etc/kubernetes/ssl/ca-key.pem \
--service-account-signing-key-file=/etc/kubernetes/ssl/ca-key.pem \
--service-account-issuer=https://kubernetes.default.svc.cluster.local \
--etcd-cafile=/etc/etcd/ssl/ca.pem \
--etcd-certfile=/etc/etcd/ssl/etcd.pem \
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \
--etcd-servers=https://10.252.4.11:2379,https://10.252.4.12:2379,https://10.252.4.14:2379 \
--enable-swagger-ui=true \
--allow-privileged=true \
--apiserver-count=2 \
--audit-log-maxage=30 \
--audit-log-maxbackup=3 \
--audit-log-maxsize=100 \
--audit-log-path=/var/log/kube-apiserver-audit.log \
--event-ttl=1h \
--alsologtostderr=true \
--logtostderr=false \
--log-dir=/var/log/kubernetes \
--v=4"

注：
--logtostderr：启用日志
--v：日志等级
--log-dir：日志目录
--etcd-servers：etcd集群地址
--bind-address：监听地址
--secure-port：https安全端口
--advertise-address：集群通告地址
--allow-privileged：启用授权
--service-cluster-ip-range：Service虚拟IP地址段
--enable-admission-plugins：准入控制模块
--authorization-mode：认证授权，启用RBAC授权和节点自管理
--enable-bootstrap-token-auth：启用TLS bootstrap机制
--token-auth-file：bootstrap token文件
--service-node-port-range：Service nodeport类型默认分配端口范围
--kubelet-client-xxx：apiserver访问kubelet客户端证书
--tls-xxx-file：apiserver https证书
--etcd-xxxfile：连接Etcd集群证书
--audit-log-xxx：审计日志

2.3.6创建服务启动文件

[root@km1 work]# vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=etcd.service
Wants=etcd.service

[Service]
EnvironmentFile=-/etc/kubernetes/kube-apiserver.conf
ExecStart=/usr/local/bin/kube-apiserver $KUBE_APISERVER_OPTS
Restart=on-failure
RestartSec=5
Type=notify
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

2.3.7 同步相关文件到各个节点

[root@km1 work]# cp ca*.pem kube-apiserver*.pem /etc/kubernetes/ssl/
[root@km1 work]# cp token.csv kube-apiserver.conf /etc/kubernetes/
[root@km1 work]# cp kube-apiserver.service /usr/lib/systemd/system/
[root@km1 work]# scp ca*.pem kube-apiserver*.pem km2:/etc/kubernetes/ssl/
[root@km1 work]# scp token.csv kube-apiserver.conf km2:/etc/kubernetes/
[root@km1 work]# scp kube-apiserver.service km2:/usr/lib/systemd/system/

注：km1\km2配置文件的IP地址修改为实际的本机IP

2.3.8 启动服务

[root@km1 work]# systemctl daemon-reload
[root@km1 work]# systemctl enable --now kube-apiserver
[root@km1 work]# systemctl status kube-apiserver
[root@km1 work]# netstat -nltup|grep kube-api
测试 : curl --cert ./kube-apiserver.pem --key ./kube-apiserver-key.pem --cacert ./ca.pem https://10.252.4.11:6443/version

2.3.9 部署四层反向代理
分别在km节点安装NGINX和keepalived

[root@km1 work]# yum install nginx* keepalived -y
[root@km1 work]# vi /etc/nginx/nginx.conf
# 在文件最后加上以下内容，不能写在http模块中！！
stream {

upstream kube-apiserver {
server 10.252.4.11:6443 max_fails=3 fail_timeout=30s;
server 10.252.4.12:6443 max_fails=3 fail_timeout=30s;
}
server {
listen 7443;
proxy_connect_timeout 2s;
proxy_timeout 900s;
proxy_pass kube-apiserver;
}
}
[root@km1 work]# nginx -t
检查端口脚本
[root@km1 work]#vi /etc/keepalived/check_port.sh
#!/bin/bash
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
PORT_PROCESS=`ss -lnt|grep $CHK_PORT|wc -l`
if [ $PORT_PROCESS -eq 0 ];then
echo "Port $CHK_PORT Is Not Used,End."
exit 1
fi
else
echo "Check Port Cant Be Empty!"
fi
[root@km1 work]# chmod +x /etc/keepalived/check_port.sh
##########

2.3.10 配置文件
keepalived 主
[root@km1 work]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
router_id 10.252.4.11

}

vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}

vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 251
priority 100
advert_int 1
mcast_src_ip 10.252.4.11
nopreempt

authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.252.4.10
}
}

keepalived 从:

! Configuration File for keepalived
global_defs {
router_id 10.252.4.12
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 251
mcast_src_ip 10.252.4.12
priority 90
advert_int 1
nopreempt
authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.252.4.10
}
}
nopreempt：非抢占式
启动代理并检查
systemctl enable --now nginx keepalived
netstat -lntup|grep nginx
ip add
curl --cert ./kube-apiserver.pem --key ./kube-apiserver-key.pem --cacert ./ca.pem https://10.252.4.10:7443/version

2.4 部署kube-controller-manager ---(master机器)

2.4.1 创建csr请求文件

[root@km1 work]# vim kube-controller-manager-csr.json
{
"CN": "system:kube-controller-manager",
"key": {
"algo": "rsa",
"size": 2048
},
"hosts": [
"127.0.0.1",
"10.252.4.11",
"10.252.4.12"
],
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:kube-controller-manager",
"OU": "system"
}
]
}

注：
hosts 列表包含所有 kube-controller-manager 节点 IP；
CN 为 system:kube-controller-manager、O 为 system:kube-controller-manager，kubernetes 内置的 ClusterRoleBindings system:kube-controller-manager 赋予 kube-controller-manager 工作所需的权限

2.4.2 生成证书

[root@km1 work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager
[root@km1 work]# ls kube-controller-manager*.pem

2.4.3 创建kube-controller-manager的kubeconfig

1>. 设置集群参数
[root@km1 work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://10.252.4.10:7443 --kubeconfig=kube-controller-manager.kubeconfig

2>. 设置客户端认证参数
[root@km1 work]# kubectl config set-credentials system:kube-controller-manager --client-certificate=kube-controller-manager.pem --client-key=kube-controller-manager-key.pem --embed-certs=true --kubeconfig=kube-controller-manager.kubeconfig

3>. 设置上下文参数
[root@km1 work]# kubectl config set-context system:kube-controller-manager --cluster=kubernetes --user=system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig

4>. 设置默认上下文
[root@km1 work]# kubectl config use-context system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig

2.4.4 创建配置文件

[root@km1 work]# vim /etc/kubernetes/kube-controller-manager.conf
KUBE_CONTROLLER_MANAGER_OPTS="--bind-address=10.252.4.11 \ //修改ip地址
--kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \
--service-cluster-ip-range=10.255.0.0/16 \
--cluster-name=kubernetes \
--cluster-signing-cert-file=/etc/kubernetes/ssl/ca.pem \
--cluster-signing-key-file=/etc/kubernetes/ssl/ca-key.pem \
--allocate-node-cidrs=true \
--cluster-cidr=10.0.0.0/16 \
--experimental-cluster-signing-duration=175200h \
--root-ca-file=/etc/kubernetes/ssl/ca.pem \
--service-account-private-key-file=/etc/kubernetes/ssl/ca-key.pem \
--leader-elect=true \
--feature-gates=RotateKubeletServerCertificate=true \
--controllers=*,bootstrapsigner,tokencleaner \
--horizontal-pod-autoscaler-use-rest-clients=true \
--horizontal-pod-autoscaler-sync-period=10s \
--tls-cert-file=/etc/kubernetes/ssl/kube-controller-manager.pem \
--tls-private-key-file=/etc/kubernetes/ssl/kube-controller-manager-key.pem \
--use-service-account-credentials=true \
--alsologtostderr=true \
--logtostderr=false \
--log-dir=/var/log/kubernetes \
--v=2"

2.4.5 创建启动文件

[root@km1 work]# vim /usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/etc/kubernetes/kube-controller-manager.conf
ExecStart=/usr/local/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

2.4.6 同步相关文件到各个节点

[root@km1 work]# cp kube-controller-manager*.pem /etc/kubernetes/ssl/
[root@km1 work]# cp kube-controller-manager.conf kube-controller-manager.kubeconfig /etc/kubernetes/
[root@km1 work]# cp kube-controller-manager.service /usr/lib/systemd/system/

2.4.7 启动服务
]# systemctl daemon-reload
]# systemctl enable --now kube-controller-manager
]# systemctl status kube-controller-manager

2.5 部署kube-scheduler
2.5.1 创建csr请求文件

[root@km1 work]# vim kube-scheduler-csr.json
{
"CN": "system:kube-scheduler",
"hosts": [
"127.0.0.1",
"10.252.4.11",
"10.252.4.12"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:kube-scheduler",
"OU": "system"
}
]
}

注：
hosts 列表包含所有 kube-scheduler 节点 IP；
CN 为 system:kube-scheduler、O 为 system:kube-scheduler，kubernetes 内置的 ClusterRoleBindings system:kube-scheduler 将赋予 kube-scheduler 工作所需的权限。

2.5.2 生成证书

[root@km1 work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-scheduler-csr.json | cfssljson -bare kube-scheduler
[root@km1 work]# ls kube-scheduler*.pem

2.5.3 创建kube-scheduler的kubeconfig

1>. 设置集群参数
[root@master1 work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://10.252.4.10:7443 --kubeconfig=kube-scheduler.kubeconfig

2>. 设置客户端认证参数
[root@master1 work]# kubectl config set-credentials system:kube-scheduler --client-certificate=kube-scheduler.pem --client-key=kube-scheduler-key.pem --embed-certs=true --kubeconfig=kube-scheduler.kubeconfig

3>. 设置上下文参数
[root@master1 work]# kubectl config set-context system:kube-scheduler --cluster=kubernetes --user=system:kube-scheduler --kubeconfig=kube-scheduler.kubeconfig

4>. 设置默认上下文
[root@master1 work]# kubectl config use-context system:kube-scheduler --kubeconfig=kube-scheduler.kubeconfig

2.5.4 创建配置文件

[root@km1 work]# vim /etc/kubernetes/kube-scheduler.conf
KUBE_SCHEDULER_OPTS="--bind-address=10.252.4.11 \ //注意修改IP地址
--kubeconfig=/etc/kubernetes/kube-scheduler.kubeconfig \
--leader-elect=true \
--alsologtostderr=true \
--logtostderr=false \
--log-dir=/var/log/kubernetes \
--v=2"

2.5.5 创建服务启动文件

[root@km1 work]# vim /usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/etc/kubernetes/kube-scheduler.conf
ExecStart=/usr/local/bin/kube-scheduler $KUBE_SCHEDULER_OPTS
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

2.5.6 同步相关文件到各个节点

[root@km1 work]# cp kube-scheduler.service /usr/lib/systemd/system/
[root@km1 work]# cp kube-scheduler.conf kube-scheduler.kubeconfig /etc/kubernetes/
[root@km1 work]# cp kube-scheduler*.pem /etc/kubernetes/ssl/

2.5.7 启动服务

[root@km2 ~]# systemctl daemon-reload
[root@km2 ~]# systemctl enable --now kube-scheduler
[root@km2 ~]# systemctl status kube-scheduler

2.6 部署kubectl (master)
2.6.1 创建csr请求文件

[root@km1 work]# vim admin-csr.json
{
"CN": "admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "system:masters",
"OU": "system"
}
]
}

说明：
kube-apiserver 使用 RBAC 对客户端(如 kubelet、kube-proxy、Pod)请求进行授权；
kube-apiserver 预定义了一些 RBAC 使用的 RoleBindings，如 cluster-admin 将 Group system:masters 与 Role cluster-admin 绑定，该 Role 授予了调用kube-apiserver 的所有 API的权限；O指定该证书的 Group 为 system:masters，kubelet 使用该证书访问 kube-apiserver 时，由于证书被 CA 签名，所以认证通过，同时由于证书用户组为经过预授权的
system:masters，所以被授予访问所有 API 的权限；
注：
这个admin 证书，是将来生成管理员用的kube config 配置文件用的，现在我们一般建议使用RBAC 来对kubernetes 进行角色权限控制， kubernetes 将证书中的CN 字段作为User， O 字段作为 Group；"O": "system:masters", 必须是system:masters，否则后面kubectl create clusterrolebinding报错。

2.6.2 生成证书

[root@km1 work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin

2.6.3 创建kubeconfig配置文件
kubeconfig 为 kubectl 的配置文件，包含访问 apiserver 的所有信息，如 apiserver 地址、CA 证书和自身使用的证书

1>. 设置集群参数
[root@km1 work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://10.252.4.10:7443 --kubeconfig=kube.config

2>. 设置客户端认证参数
[root@km1 work]# kubectl config set-credentials admin --client-certificate=admin.pem --client-key=admin-key.pem --embed-certs=true --kubeconfig=kube.config

3>. 设置上下文参数
[root@km1 work]# kubectl config set-context kubernetes --cluster=kubernetes --user=admin --kubeconfig=kube.config

4>. 设置默认上下文
[root@km1 work]# kubectl config use-context kubernetes --kubeconfig=kube.config

[root@km1 work]# mkdir ~/.kube
[root@km1 work]# cp kube.config ~/.kube/config
[root@km1 work]# cp admin*.pem /etc/kubernetes/ssl/

2.6.4 授权kubernetes证书访问kubelet api权限
[root@km1 work]# kubectl create clusterrolebinding kube-apiserver:kubelet-apis --clusterrole=system:kubelet-api-admin --user kubernetes

2.6.5 查看集群组件状态
上面步骤完成后，kubectl就可以与kube-apiserver通信了

[root@km1 work]# kubectl cluster-info
[root@km1 work]# kubectl get componentstatuses
[root@km1 work]# kubectl get all --all-namespaces

2.6.6 同步kubectl配置文件到其他节点

[root@km1 work]# scp -rp /root/.kube/ km2:/root/

2.6.7 配置kubectl子命令补全

[root@km1 work]# yum install -y bash-completion
[root@km1 work]# source /usr/share/bash-completion/bash_completion
[root@km1 work]# source <(kubectl completion bash)
[root@km1 work]# kubectl completion bash > ~/.kube/completion.bash.inc
[root@km1 work]# source '/root/.kube/completion.bash.inc'
[root@km1 work]# source $HOME/.bash_profile

五、部署Work节点

1.1 部署kubelet 以下操作在master1上操作

1.1.1 创建kubelet-bootstrap.kubeconfig
[root@km1 work]# BOOTSTRAP_TOKEN=$(awk -F "," '{print $1}' /etc/kubernetes/token.csv)
1>. 设置集群参数
[root@km1 work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://10.252.4.10:7443 --kubeconfig=kubelet-bootstrap.kubeconfig

2>. 设置客户端认证参数
[root@km1 work]# kubectl config set-credentials kubelet-bootstrap --token=${BOOTSTRAP_TOKEN} --kubeconfig=kubelet-bootstrap.kubeconfig

3>. 设置上下文参数
[root@km1 work]# kubectl config set-context default --cluster=kubernetes --user=kubelet-bootstrap --kubeconfig=kubelet-bootstrap.kubeconfig

4>. 设置默认上下文
[root@km1 work]# kubectl config use-context default --kubeconfig=kubelet-bootstrap.kubeconfig

5>. 创建角色绑定
[root@km1 work]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap

1.1.2 创建配置文件(所有节点)

[root@km1 work]# vim /etc/kubernetes/kubelet.json
{
"kind": "KubeletConfiguration",
"apiVersion": "kubelet.config.k8s.io/v1beta1",
"authentication": {
"x509": {
"clientCAFile": "/etc/kubernetes/ssl/ca.pem"
},
"webhook": {
"enabled": true,
"cacheTTL": "2m0s"
},
"anonymous": {
"enabled": false
}
},
"authorization": {
"mode": "Webhook",
"webhook": {
"cacheAuthorizedTTL": "5m0s",
"cacheUnauthorizedTTL": "30s"
}
},
"address": "10.252.4.11",
"port": 10250,
"readOnlyPort": 10255,
"cgroupDriver": "systemd",
"hairpinMode": "promiscuous-bridge",
"serializeImagePulls": false,
"featureGates": {
"RotateKubeletClientCertificate": true,
"RotateKubeletServerCertificate": true
},
"clusterDomain": "cluster.local.",
"clusterDNS": ["10.255.0.2"]
}

1.1.3 创建启动文件(所有节点)

[root@km1 work]# vim /usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=docker.service
Requires=docker.service

[Service]
WorkingDirectory=/var/lib/kubelet
ExecStart=/usr/local/bin/kubelet \
--bootstrap-kubeconfig=/etc/kubernetes/kubelet-bootstrap.kubeconfig \
--cert-dir=/etc/kubernetes/ssl \
--kubeconfig=/etc/kubernetes/kubelet.kubeconfig \
--config=/etc/kubernetes/kubelet.json \
--network-plugin=cni \
--pod-infra-container-image=harbor.zjh.com:5000/maxzhu/pause:v1 \
--alsologtostderr=true \
--logtostderr=false \
--log-dir=/var/log/kubernetes \
--v=2
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

注：
–hostname-override：显示名称，集群中唯一
–network-plugin：启用CNI
–kubeconfig：空路径，会自动生成，后面用于连接apiserver
–bootstrap-kubeconfig：首次启动向apiserver申请证书
–config：配置参数文件
–cert-dir：kubelet证书生成目录
–pod-infra-container-image：管理Pod网络容器的镜像

1.1.3 同步相关文件到所有节点

[root@km1 work]# scp kubelet-bootstrap.kubeconfig kn:/etc/kubernetes/
[root@km1 work]# scp ca*.pem kn:/etc/kubernetes/ssl/
注：kubelete.json配置文件address改为各个节点的ip地址

1.1.4 启动服务(所有节点)

[root@kn1 ~]# mkdir -p /etc/kubernetes/ssl/
[root@kn1 ~]# mkdir /var/lib/kubelet
[root@kn1 ~]# mkdir /var/log/kubernetes
[root@kn1 ~]# systemctl daemon-reload
[root@kn1 ~]# systemctl enable --now kubelet
[root@kn1 ~]# systemctl status kubelet

1.1.5 确认kubelet服务启动成功后，接着到master上Approve一下bootstrap请求。执行如下命令可以看到四个worker节点分别发送了四个 CSR 请求：

[root@km1 work]# kubectl get csr
[root@km1 work]# kubectl certificate approve node-csr-HlX3cExsZohWsu8Dd6Rp_ztFejmMdpzvti_qgxo4SAQ
[root@km1 work]# kubectl get csr
[root@km1 work]# kubectl get nodes

1.2 部署kube-proxy
1.2.1 创建csr请求文件

[root@km1 work]# vim kube-proxy-csr.json
{
"CN": "system:kube-proxy",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Beijing",
"L": "Beijing",
"O": "k8s",
"OU": "system"
}
]
}

1.2.2 生成证书

[root@km1 work]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy
[root@km1 work]# ls kube-proxy*.pem

1.2.3 创建kubeconfig文件

[root@master1 work]# kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=https://10.252.4.10:7443 --kubeconfig=kube-proxy.kubeconfig
[root@master1 work]# kubectl config set-credentials kube-proxy --client-certificate=kube-proxy.pem --client-key=kube-proxy-key.pem --embed-certs=true --kubeconfig=kube-proxy.kubeconfig
[root@master1 work]# kubectl config set-context default --cluster=kubernetes --user=kube-proxy --kubeconfig=kube-proxy.kubeconfig
[root@master1 work]# kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig

1.2.4 创建kube-proxy配置文件

[root@km1 work]# vim /etc/kubernetes/kube-proxy.yaml
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 10.252.4.13
clientConnection:
kubeconfig: /etc/kubernetes/kube-proxy.kubeconfig
clusterCIDR: 192.168.0.0/16
healthzBindAddress: 10.252.4.13:10256
kind: KubeProxyConfiguration
metricsBindAddress: 10.252.4.13:10249
mode: "ipvs"

1.2.5 创建服务启动文件

[root@km1 work]# vim /usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Kube-Proxy Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
WorkingDirectory=/var/lib/kube-proxy
ExecStart=/usr/local/bin/kube-proxy \
--config=/etc/kubernetes/kube-proxy.yaml \
--alsologtostderr=true \
--logtostderr=false \
--log-dir=/var/log/kubernetes \
--v=2
Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

1.2.6 同步文件到各个node节点

[root@km1 work]# scp kube-proxy.kubeconfig kn:/etc/kubernetes/

注：配置文件kube-proxy.yaml中address修改为各节点的实际IP
启动服务

[root@kn ~]# mkdir -p /var/lib/kube-proxy
[root@kn ~]# systemctl daemon-reload
[root@kn ~]# systemctl enable --now kube-proxy
[root@kn ~]# systemctl status kube-proxy

1.3 配置网络组件

[root@km1 work]# wget https://docs.projectcalico.org/manifests/calico-etcd.yaml
修改calico-etcd.yaml文件内容：https://blog.youkuaiyun.com/kanganrui/article/details/107140619

[root@km1 work]# kubectl apply -f calico.yaml

此时再来查看各个节点，均为Ready状态
[root@km1 work]# kubectl get pods -A
[root@km1 work]# kubectl get nodes