二进制安装Kubernetes（k8s）v1.36.0

介绍

https://github.com/cby-chen/Kubernetes 开源不易，帮忙点个star，谢谢了

kubernetes（k8s）二进制高可用安装部署，支持IPv4+IPv6双栈。

强烈建议在Github上查看文档 ！！！

Github出问题会更新文档，并且后续尽可能第一时间更新新版本文档 ！！！

手动项目地址：https://github.com/cby-chen/Kubernetes

1.环境

详细版本

网段

IPv4

物理主机：192.168.1.0/24

service：10.96.0.0/16

pod：172.16.0.0/16

IPv6

物理主机：fc00::/8

service：fd00:1111::/112

pod：fd00:2222::/112

安装包已经整理好：https://github.com/cby-chen/Kubernetes/releases/download/v1.36.0/kubernetes-v1.36.0.tar

1.1.k8s基础系统环境配置

1.2.配置IP

详见完整版 https://github.com/cby-chen/Kubernetes

1.3.设置主机名

hostnamectl set-hostname k8s-master01
hostnamectl set-hostname k8s-master02
hostnamectl set-hostname k8s-master03
hostnamectl set-hostname k8s-node01
hostnamectl set-hostname k8s-node02

# 参数解释
# 
# 参数: set-hostname
# 解释: 这是hostnamectl命令的一个参数，用于设置系统的主机名。
# 
# 参数: k8s-master01
# 解释: 这是要设置的主机名，将系统的主机名设置为"k8s-master01"。

1.4.配置yum源

详见完整版 https://github.com/cby-chen/Kubernetes

1.5.安装一些必备工具

# 对于 Ubuntu
apt update && apt upgrade -y && apt install -y wget psmisc vim net-tools nfs-kernel-server telnet lvm2 git tar curl

# 对于 CentOS 7 & CentOS 8 & CentOS 9 & CentOS 10
yum update -y && yum -y install wget psmisc vim net-tools nfs-utils telnet yum-utils device-mapper-persistent-data lvm2 git tar curl

1.5.1 下载离线所需文件(可选)

在互联网服务器上安装一个一模一样的系统进行下载所需包

CentOS7

详见完整版 https://github.com/cby-chen/Kubernetes

CentOS8

详见完整版 https://github.com/cby-chen/Kubernetes

CentOS9 & CentOS10

详见完整版 https://github.com/cby-chen/Kubernetes

Ubuntu 下载包和依赖

详见完整版 https://github.com/cby-chen/Kubernetes

1.6.选择性下载需要工具

#!/bin/bash

# 查看版本地址：
# 
# https://github.com/containernetworking/plugins/releases/
# https://github.com/containerd/containerd/releases/
# https://github.com/kubernetes-sigs/cri-tools/releases/
# https://github.com/Mirantis/cri-dockerd/releases/
# https://github.com/etcd-io/etcd/releases/
# https://github.com/cloudflare/cfssl/releases/
# https://github.com/kubernetes/kubernetes/tree/master/CHANGELOG
# https://download.docker.com/linux/static/stable/x86_64/
# https://github.com/opencontainers/runc/releases/
# https://github.com/helm/helm/tags
# http://nginx.org/download/

# Version numbers
cni_plugins_version='v1.9.1'
cri_containerd_cni_version='2.3.0'
crictl_version='v1.36.0'
cri_dockerd_version='0.4.3'
etcd_version='v3.6.11'
cfssl_version='1.6.5'
kubernetes_server_version='1.36.0'
docker_version='29.4.3'
runc_version='1.5.0'
kernel_version='5.4.278'
helm_version='4.1.4'
nginx_version='1.30.0'

# URLs 
base_url='https://github.com'
kernel_url="http://mirrors.tuna.tsinghua.edu.cn/elrepo/kernel/el7/x86_64/RPMS/kernel-lt-${kernel_version}-1.el7.elrepo.x86_64.rpm"
runc_url="${base_url}/opencontainers/runc/releases/download/v${runc_version}/runc.amd64"
docker_url="https://mirrors.ustc.edu.cn/docker-ce/linux/static/stable/x86_64/docker-${docker_version}.tgz"
cni_plugins_url="${base_url}/containernetworking/plugins/releases/download/${cni_plugins_version}/cni-plugins-linux-amd64-${cni_plugins_version}.tgz"
cri_containerd_cni_url="${base_url}/containerd/containerd/releases/download/v${cri_containerd_cni_version}/containerd-${cri_containerd_cni_version}-linux-amd64.tar.gz"
crictl_url="${base_url}/kubernetes-sigs/cri-tools/releases/download/${crictl_version}/crictl-${crictl_version}-linux-amd64.tar.gz"
cri_dockerd_url="${base_url}/Mirantis/cri-dockerd/releases/download/v${cri_dockerd_version}/cri-dockerd-${cri_dockerd_version}.amd64.tgz"
etcd_url="${base_url}/etcd-io/etcd/releases/download/${etcd_version}/etcd-${etcd_version}-linux-amd64.tar.gz"
cfssl_url="${base_url}/cloudflare/cfssl/releases/download/v${cfssl_version}/cfssl_${cfssl_version}_linux_amd64"
cfssljson_url="${base_url}/cloudflare/cfssl/releases/download/v${cfssl_version}/cfssljson_${cfssl_version}_linux_amd64"
helm_url="https://mirrors.huaweicloud.com/helm/v${helm_version}/helm-v${helm_version}-linux-amd64.tar.gz"
kubernetes_server_url="https://dl.k8s.io/v${kubernetes_server_version}/kubernetes-server-linux-amd64.tar.gz"
nginx_url="http://nginx.org/download/nginx-${nginx_version}.tar.gz"

# Download packages
packages=(
  # $kernel_url
  $runc_url
  $docker_url
  $cni_plugins_url
  $cri_containerd_cni_url
  $crictl_url
  $cri_dockerd_url
  $etcd_url
  $cfssl_url
  $cfssljson_url
  $helm_url
  $kubernetes_server_url
  $nginx_url
)

for package_url in "${packages[@]}"; do
  filename=$(basename "$package_url")
  if curl --parallel --parallel-immediate -k -L -C - -o "$filename" "$package_url"; then
    echo "Downloaded $filename"
  else
    echo "Failed to download $filename"
    exit 1
  fi
done

1.7.关闭防火墙

# Ubuntu忽略，CentOS执行
systemctl disable --now firewalld

1.8.关闭SELinux

# Ubuntu忽略，CentOS执行
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config

1.9.关闭交换分区

sed -ri 's/.*swap.*/#&/' /etc/fstab
swapoff -a && sysctl -w vm.swappiness=0

cat /etc/fstab
# /dev/mapper/centos-swap swap                    swap    defaults        0 0

1.10.网络配置（俩种方式二选一）

# Ubuntu忽略，CentOS执行，CentOS9不支持方式一

# 方式一
# systemctl disable --now NetworkManager
# systemctl start network && systemctl enable network

# 方式二
cat > /etc/NetworkManager/conf.d/calico.conf << EOF 
[keyfile]
unmanaged-devices=interface-name:cali*;interface-name:tunl*;interface-name:vxlan*;interface-name:kube*
EOF
systemctl restart NetworkManager

1.11.进行时间同步

# 服务端
# apt install chrony -y
yum install chrony -y
cat > /etc/chrony.conf << EOF 
pool ntp.aliyun.com iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow 192.168.1.0/24
local stratum 10
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF

systemctl restart chronyd ; systemctl enable chronyd

# 客户端
# apt install chrony -y
yum install chrony -y
cat > /etc/chrony.conf << EOF 
pool 192.168.1.31 iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF

systemctl restart chronyd ; systemctl enable chronyd

#使用客户端进行验证
chronyc sources -v

1.12.配置ulimit

ulimit -SHn 65535
cat >> /etc/security/limits.conf <<EOF
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* seft memlock unlimited
* hard memlock unlimitedd
EOF

1.13.配置免密登录

# apt install -y sshpass
yum install -y sshpass
ssh-keygen -f /root/.ssh/id_rsa -P ''
export IP="192.168.1.31 192.168.1.32 192.168.1.33 192.168.1.34 192.168.1.35"
export SSHPASS=123123
for HOST in $IP;do
     sshpass -e ssh-copy-id -o StrictHostKeyChecking=no $HOST
done

1.14.添加启用源

# Ubuntu忽略，CentOS执行

# 为 RHEL-10或 CentOS-10配置源
dnf install https://www.elrepo.org/elrepo-release-10.el10.elrepo.noarch.rpm -y 
sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo 
sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo 

# 为 RHEL-9或 CentOS-9配置源
dnf install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm -y 
sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo 
sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo 

# 为 RHEL-8或 CentOS-8配置源
dnf install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm -y 
sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo 
sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo 

# 为 RHEL-7 SL-7 或 CentOS-7 安装 ELRepo 
yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm -y 
sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo 
sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo 

# 查看可用安装包
yum  --disablerepo="*"  --enablerepo="elrepo-kernel"  list  available

1.15.升级内核至4.18版本以上（若内核版本不够执行升级）

# Ubuntu忽略，CentOS执行

# 安装最新的内核
# 我这里选择的是稳定版kernel-ml   如需更新长期维护版本kernel-lt  
yum -y --enablerepo=elrepo-kernel  install  kernel-ml

# 查看已安装那些内核
rpm -qa | grep kernel

# 查看默认内核
grubby --default-kernel

# 若不是最新的使用命令设置
grubby --set-default $(ls /boot/vmlinuz-* | grep elrepo)

# 重启生效
reboot

# v8 整合命令为：
yum install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm -y ; sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo ; sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo ; yum  --disablerepo="*"  --enablerepo="elrepo-kernel"  list  available -y ; yum  --enablerepo=elrepo-kernel  install kernel-lt -y ; grubby --default-kernel ; reboot 

# v8 整合命令为：
yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm -y ; sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo ; sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo ; yum  --disablerepo="*"  --enablerepo="elrepo-kernel"  list  available -y ; yum  --enablerepo=elrepo-kernel  install kernel-lt -y ; grubby --default-kernel ; reboot 

# v7 整合命令为：
yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm -y ; sed -i "s@mirrorlist@#mirrorlist@g" /etc/yum.repos.d/elrepo.repo ; sed -i "s@elrepo.org/linux@mirrors.tuna.tsinghua.edu.cn/elrepo@g" /etc/yum.repos.d/elrepo.repo ; yum  --disablerepo="*"  --enablerepo="elrepo-kernel"  list  available -y ; yum  --enablerepo=elrepo-kernel  install  kernel-lt -y ; grubby --set-default $(ls /boot/vmlinuz-* | grep elrepo) ; grubby --default-kernel ; reboot 

# 离线版本 
yum install -y /root/cby/kernel-lt-*-1.el7.elrepo.x86_64.rpm ; grubby --set-default $(ls /boot/vmlinuz-* | grep elrepo) ; grubby --default-kernel ; reboot 

1.16.安装ipvsadm

# 对于CentOS7离线安装
# yum install /root/centos7/ipset-*.el7.x86_64.rpm /root/centos7/lm_sensors-libs-*.el7.x86_64.rpm  /root/centos7/ipset-libs-*.el7.x86_64.rpm /root/centos7/sysstat-*.el7_9.x86_64.rpm  /root/centos7/ipvsadm-*.el7.x86_64.rpm  -y

# 对于 Ubuntu
# apt install ipvsadm ipset sysstat conntrack -y

# 对于 CentOS
yum install ipvsadm ipset sysstat conntrack libseccomp -y
cat >> /etc/modules-load.d/ipvs.conf <<EOF 
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF

systemctl restart systemd-modules-load.service

lsmod | grep -e ip_vs -e nf_conntrack
ip_vs_sh               16384  0
ip_vs_wrr              16384  0
ip_vs_rr               16384  0
ip_vs                 237568  6 ip_vs_rr,ip_vs_sh,ip_vs_wrr
nf_conntrack          217088  3 nf_nat,nft_ct,ip_vs
nf_defrag_ipv6         24576  2 nf_conntrack,ip_vs
nf_defrag_ipv4         16384  1 nf_conntrack
libcrc32c              16384  5 nf_conntrack,nf_nat,nf_tables,xfs,ip_vs

1.17.修改内核参数

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

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.all.forwarding = 1
EOF

sysctl --system

1.18.所有节点配置hosts本地解析

cat > /etc/hosts <<EOF
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.1.31 k8s-master01
192.168.1.32 k8s-master02
192.168.1.33 k8s-master03
192.168.1.34 k8s-node01
192.168.1.35 k8s-node02
192.168.1.36 lb-vip

fc00::31 k8s-master01
fc00::32 k8s-master02
fc00::33 k8s-master03
fc00::34 k8s-node01
fc00::35 k8s-node02
EOF

2.k8s基本组件安装

注意 ： 2.1 和 2.2 二选其一即可

说明：使用docker作为Runtime会出现报错，无法进入容器内部，该问题的是cri-dockerd不兼容导致的，同时官方已经弃用docker，建议使用Containerd作为Runtime，例如：

# docker作为Runtime

[root@k8s-master01 ~]# kubectl exec -ti busybox -- sh
Defaulted container "busybox" out of: busybox, debugger-8sq56 (ephem)
error: Internal error occurred: error sending request: Post "//[::]:39823/cri/exec/JBk5X7Cx": http: server gave HTTP response to HTTPS client
[root@k8s-master01 ~]# 

# Containerd作为Runtime

[root@k8s-master01 ~]# kubectl exec -ti busybox -- sh
Defaulted container "busybox" out of: busybox, debugger-8sq56 (ephem)
/ # 
/ # 
[root@k8s-master01 ~]# 

2.1.安装Containerd作为Runtime

# https://github.com/containernetworking/plugins/releases/
# wget https://github.com/containernetworking/plugins/releases/download/v1.7.1/cni-plugins-linux-amd64-v1.7.1.tgz

cd cby/

#创建cni插件所需目录
mkdir -p /etc/cni/net.d /opt/cni/bin 
#解压cni二进制包
tar xf cni-plugins-linux-amd64-v*.tgz -C /opt/cni/bin/

# https://github.com/containerd/containerd/releases/
# wget https://github.com/containerd/containerd/releases/download/v2.0.5/containerd-2.0.5-linux-amd64.tar.gz

#解压
tar -xzf containerd-*-linux-amd64.tar.gz -C /usr/local/

#创建服务启动文件
cat > /etc/systemd/system/containerd.service <<EOF
[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target

[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd
Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=infinity
TasksMax=infinity
OOMScoreAdjust=-999

[Install]
WantedBy=multi-user.target
EOF

2.1.1配置Containerd所需的模块

cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF

2.1.2加载模块

systemctl restart systemd-modules-load.service

2.1.3配置Containerd所需的内核

cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
net.bridge.bridge-nf-call-iptables  = 1
net.ipv4.ip_forward                 = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF

# 加载内核
sysctl --system

2.1.4创建Containerd的配置文件

# 创建默认配置文件
mkdir -p /etc/containerd
containerd config default | tee /etc/containerd/config.toml

# 修改Containerd的配置文件

# sed -i "s#SystemdCgroup\ \=\ false#SystemdCgroup\ \=\ true#g" /etc/containerd/config.toml
# cat /etc/containerd/config.toml | grep SystemdCgroup

# 沙箱pause镜像
sed -i "s#registry.k8s.io#registry.aliyuncs.com/chenby#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep sandbox

# 配置加速器
[root@k8s-master01 ~]# vim /etc/containerd/config.toml
[root@k8s-master01 ~]# cat /etc/containerd/config.toml | grep certs.d -C 5

    [plugins.'io.containerd.cri.v1.images'.pinned_images]
      sandbox = 'registry.aliyuncs.com/chenby/pause:3.10'

    [plugins.'io.containerd.cri.v1.images'.registry]
      config_path = '/etc/containerd/certs.d'

    [plugins.'io.containerd.cri.v1.images'.image_decryption]
      key_model = 'node'

  [plugins.'io.containerd.cri.v1.runtime']
[root@k8s-master01 ~]# 


mkdir /etc/containerd/certs.d/docker.io -pv
cat > /etc/containerd/certs.d/docker.io/hosts.toml << EOF
server = "https://docker.io"
[host."https://jockerhub.com"]
  capabilities = ["pull", "resolve"]
EOF

# 配置 GFW 代理
mkdir -p /etc/systemd/system/containerd.service.d
touch /etc/systemd/system/containerd.service.d/http-proxy.conf
tee /etc/systemd/system/containerd.service.d/http-proxy.conf << EOF
[Service]
Environment="HTTP_PROXY=http://192.168.1.100:7890"
Environment="HTTPS_PROXY=http://192.168.1.100:7890"
Environment="NO_PROXY=localhost,127.0.0.1,containerd"
EOF

2.1.5启动并设置为开机启动

systemctl daemon-reload
systemctl enable --now containerd.service
systemctl stop containerd.service
systemctl start containerd.service
systemctl restart containerd.service
systemctl status containerd.service

2.1.6配置crictl客户端连接的运行时位置

# https://github.com/kubernetes-sigs/cri-tools/releases/
# wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.36.0/crictl-v1.36.0-linux-amd64.tar.gz

#解压
tar xf crictl-v*-linux-amd64.tar.gz -C /usr/bin/
#生成配置文件
cat > /etc/crictl.yaml <<EOF
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
timeout: 10
debug: false
EOF

#测试
systemctl restart  containerd
crictl info

2.2 安装docker作为Runtime

2.2.1 解压docker程序

# 二进制包下载地址：https://download.docker.com/linux/static/stable/x86_64/
# wget https://mirrors.ustc.edu.cn/docker-ce/linux/static/stable/x86_64/docker-27.4.0.tgz

#解压
tar xf docker-*.tgz 
#拷贝二进制文件
cp docker/* /usr/bin/

2.2.2 创建containerd的service文件

#创建containerd的service文件,并且启动
cat >/etc/systemd/system/containerd.service <<EOF
[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target

[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/bin/containerd
Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=1048576
TasksMax=infinity
OOMScoreAdjust=-999

[Install]
WantedBy=multi-user.target
EOF

# 设置开机自启
systemctl enable --now containerd.service

2.2.3 准备docker的service文件

#准备docker的service文件
cat > /etc/systemd/system/docker.service <<EOF
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=containerd.service

[Service]
Type=notify
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process
OOMScoreAdjust=-500

[Install]
WantedBy=multi-user.target
EOF

2.2.4 准备docker的socket文件

#准备docker的socket文件
cat > /etc/systemd/system/docker.socket <<EOF
[Unit]
Description=Docker Socket for the API

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker

[Install]
WantedBy=sockets.target
EOF

2.2.5 配置加速器

# 配置加速器
mkdir /etc/docker/ -pv
cat >/etc/docker/daemon.json <<EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "registry-mirrors": [
    "https://jockerhub.com"
  ],
  "max-concurrent-downloads": 10,
  "log-driver": "json-file",
  "log-level": "warn",
  "log-opts": {
    "max-size": "10m",
    "max-file": "3"
    },
  "data-root": "/var/lib/docker",
  "proxies": {
    "http-proxy": "http://192.168.1.100:7890",
    "https-proxy": "http://192.168.1.100:7890",
    "no-proxy": "localhost"
  }
}
EOF

2.2.6 启动docker

groupadd docker
systemctl daemon-reload
systemctl enable --now docker.service
systemctl enable --now docker.socket
systemctl stop docker.service
systemctl start docker.service
systemctl restart docker.service
systemctl status docker.service
docker info

2.2.7 解压cri-docker

# 由于1.24以及更高版本不支持docker所以安装cri-docker
# 下载cri-docker 
# https://github.com/Mirantis/cri-dockerd/releases/
# wget  https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.16/cri-dockerd-0.3.16.amd64.tgz

# 解压cri-docker
tar xvf cri-dockerd-*.amd64.tgz 
cp -r cri-dockerd/  /usr/bin/
chmod +x /usr/bin/cri-dockerd/cri-dockerd

2.2.8 写入启动cri-docker配置文件

# 写入启动配置文件
cat >  /usr/lib/systemd/system/cri-docker.service <<EOF
[Unit]
Description=CRI Interface for Docker Application Container Engine
Documentation=https://docs.mirantis.com
After=network-online.target firewalld.service docker.service
Wants=network-online.target
Requires=cri-docker.socket

[Service]
Type=notify
ExecStart=/usr/bin/cri-dockerd/cri-dockerd --ipv6-dual-stack --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.10
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# 关键配置：允许 Socket 激活
StartLimitBurst=3

# 资源限制
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process

[Install]
WantedBy=multi-user.target
EOF

2.2.9 写入cri-docker的socket配置文件

# 写入socket配置文件
cat > /usr/lib/systemd/system/cri-docker.socket <<EOF
[Unit]
Description=CRI Docker Socket for the API
PartOf=cri-docker.service

[Socket]
ListenStream=/var/run/cri-dockerd.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker

[Install]
WantedBy=sockets.target
EOF

2.2.10 启动cri-docker

systemctl daemon-reload
systemctl enable --now cri-docker.socket
systemctl restart cri-docker.socket
systemctl restart cri-docker.service
systemctl status cri-docker.socket
systemctl status cri-docker.service
systemctl stop cri-docker.socket
systemctl stop cri-docker.service

2.3.k8s与etcd下载及安装（仅在master01操作）

2.3.1解压k8s安装包

# 下载安装包
# https://github.com/etcd-io/etcd/releases/
# https://github.com/kubernetes/kubernetes/tree/master/CHANGELOG
# 
# wget https://github.com/etcd-io/etcd/releases/download/v3.5.21/etcd-v3.5.21-linux-amd64.tar.gz
# wget https://cdn.dl.k8s.io/release/v1.36.0/kubernetes-server-linux-amd64.tar.gz

# 解压k8s安装文件
cd cby
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}

# 解压etcd安装文件
tar -xf etcd*.tar.gz && mv etcd-*/etcd /usr/local/bin/ && mv etcd-*/etcdctl /usr/local/bin/

# 查看/usr/local/bin下内容
[root@localhost cby]# ll /usr/local/bin/
总计 510444
-rwxr-xr-x. 1 root root 48051624  4月15日 01:36 containerd
-rwxr-xr-x. 1 root root  8339640  4月15日 01:36 containerd-shim-runc-v2
-rwxr-xr-x. 1 root root 21758305  4月15日 01:36 containerd-stress
-rwxr-xr-x. 1 root root 24961377  4月15日 01:36 ctr
-rwxr-xr-x. 1 1000 1000 26607800  4月 2日 02:30 etcd
-rwxr-xr-x. 1 1000 1000 17469624  4月 2日 02:30 etcdctl
-rwxr-xr-x. 1 root root 88309922  4月22日 21:59 kube-apiserver
-rwxr-xr-x. 1 root root 74285218  4月22日 21:59 kube-controller-manager
-rwxr-xr-x. 1 root root 59502754  4月22日 21:59 kubectl
-rwxr-xr-x. 1 root root 60064009  4月22日 21:59 kubelet
-rwxr-xr-x. 1 root root 44200098  4月22日 21:59 kube-proxy
-rwxr-xr-x. 1 root root 49098914  4月22日 21:59 kube-scheduler
[root@localhost cby]# 

2.3.2查看版本

[root@k8s-master01 ~]#  kubelet --version
Kubernetes v1.36.0
[root@k8s-master01 ~]# etcdctl version
etcdctl version: 3.6.11
API version: 3.6
[root@k8s-master01 ~]# 

2.3.3将组件发送至其他k8s节点

Master='k8s-master02 k8s-master03'
Work='k8s-node01 k8s-node02'

# 拷贝master组件
for NODE in $Master; 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

# 拷贝work组件
for NODE in $Work; do echo $NODE; scp /usr/local/bin/kube{let,-proxy} $NODE:/usr/local/bin/ ; done

# 所有节点执行
mkdir -p /opt/cni/bin

2.3创建证书相关文件

# 请查看Github仓库 或者进行获取已经打好的包
# 可以根据下文3.x进行手动部署操作 
https://github.com/cby-chen/Kubernetes/
https://github.com/cby-chen/Kubernetes/tags
https://github.com/cby-chen/Kubernetes/releases/download/v1.36.0/kubernetes-v1.36.0.tar

3.相关证书生成

# master01节点下载证书生成工具
# wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.5/cfssl_1.6.5_linux_amd64" -O /usr/local/bin/cfssl
# wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.5/cfssljson_1.6.5_linux_amd64" -O /usr/local/bin/cfssljson

# 软件包内有
cp cfssl_*_linux_amd64 /usr/local/bin/cfssl
cp cfssljson_*_linux_amd64 /usr/local/bin/cfssljson

# 添加执行权限
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson

3.1.生成etcd证书

特别说明除外，以下操作在所有master节点操作

3.1.1所有master节点创建证书存放目录

mkdir /etc/etcd/ssl -p

3.1.2master01节点生成etcd证书

# 写入生成证书所需的配置文件
cat > ca-config.json << EOF 
{
  "signing": {
    "default": {
      "expiry": "876000h"
    },
    "profiles": {
      "kubernetes": {
        "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ],
        "expiry": "876000h"
      }
    }
  }
}
EOF

cat > etcd-ca-csr.json  << EOF 
{
  "CN": "etcd",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "etcd",
      "OU": "Etcd Security"
    }
  ],
  "ca": {
    "expiry": "876000h"
  }
}
EOF
# 生成etcd证书和etcd证书的key（如果你觉得以后可能会扩容，可以在ip那多写几个预留出来）
# 若没有IPv6 可删除可保留 

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

cat > etcd-csr.json << EOF 
{
  "CN": "etcd",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "etcd",
      "OU": "Etcd Security"
    }
  ]
}
EOF


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-master03,192.168.1.31,192.168.1.32,192.168.1.33,::1 \
   -profile=kubernetes \
   etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd

3.1.3将证书复制到其他节点

Master='k8s-master02 k8s-master03'
for NODE in $Master; 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

3.2.生成k8s相关证书

特别说明除外，以下操作在所有master节点操作

3.2.1 所有k8s节点创建证书存放目录

mkdir -p /etc/kubernetes/pki

3.2.2 master01节点生成k8s证书

# 写入生成证书所需的配置文件
cat > ca-csr.json   << EOF 
{
  "CN": "kubernetes",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "Kubernetes",
      "OU": "Kubernetes-manual"
    }
  ],
  "ca": {
    "expiry": "876000h"
  }
}
EOF


cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca

cat > apiserver-csr.json << EOF 
{
  "CN": "kube-apiserver",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "Kubernetes",
      "OU": "Kubernetes-manual"
    }
  ]
}
EOF

# 生成一个根证书 ，多写了一些IP作为预留IP，为将来添加node做准备
# 10.96.0.1是service网段的第一个地址，需要计算，192.168.1.36为高可用vip地址
# 若没有IPv6 可删除可保留 

cfssl gencert   \
-ca=/etc/kubernetes/pki/ca.pem   \
-ca-key=/etc/kubernetes/pki/ca-key.pem   \
-config=ca-config.json   \
-hostname=10.96.0.1,192.168.1.36,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,x.oiox.cn,z.oiox.cn,192.168.1.31,192.168.1.32,192.168.1.33,192.168.1.34,192.168.1.35,192.168.1.36,192.168.1.37,192.168.1.38,192.168.1.39,192.168.1.40,::1   \
-profile=kubernetes   apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver

3.2.3 生成apiserver聚合证书

cat > front-proxy-ca-csr.json  << EOF 
{
  "CN": "kubernetes",
  "key": {
     "algo": "rsa",
     "size": 2048
  },
  "ca": {
    "expiry": "876000h"
  }
}
EOF

cfssl gencert   -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca 

cat > front-proxy-client-csr.json  << EOF 
{
  "CN": "front-proxy-client",
  "key": {
     "algo": "rsa",
     "size": 2048
  }
}
EOF

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

3.2.4 生成controller-manage的证书

在《5.高可用配置》选择使用那种高可用方案
若使用 haproxy、keepalived 那么为 --server=https://192.168.1.36:9443
若使用 nginx方案，那么为 --server=https://127.0.0.1:8443

cat > manager-csr.json << EOF 
{
  "CN": "system:kube-controller-manager",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "system:kube-controller-manager",
      "OU": "Kubernetes-manual"
    }
  ]
}
EOF


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


# 设置一个集群项
# 在《5.高可用配置》选择使用那种高可用方案
# 若使用 haproxy、keepalived 那么为 `--server=https://192.168.1.36:9443`
# 若使用 nginx方案，那么为 `--server=https://127.0.0.1:8443`
kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://127.0.0.1:8443 \
     --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

  # 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

# 设置默认环境
kubectl config use-context system:kube-controller-manager@kubernetes \
     --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig

3.2.5 生成kube-scheduler的证书

cat > scheduler-csr.json << EOF 
{
  "CN": "system:kube-scheduler",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "system:kube-scheduler",
      "OU": "Kubernetes-manual"
    }
  ]
}
EOF


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


# 在《5.高可用配置》选择使用那种高可用方案
# 若使用 haproxy、keepalived 那么为 `--server=https://192.168.1.36:9443`
# 若使用 nginx方案，那么为 `--server=https://127.0.0.1:8443`

kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://127.0.0.1:8443 \
     --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

3.2.6 生成admin的证书配置

cat > admin-csr.json << EOF 
{
  "CN": "admin",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "system:masters",
      "OU": "Kubernetes-manual"
    }
  ]
}
EOF


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

# 在《5.高可用配置》选择使用那种高可用方案
# 若使用 haproxy、keepalived 那么为 `--server=https://192.168.1.36:9443`
# 若使用 nginx方案，那么为 `--server=https://127.0.0.1:8443`

kubectl config set-cluster kubernetes     \
  --certificate-authority=/etc/kubernetes/pki/ca.pem     \
  --embed-certs=true     \
  --server=https://127.0.0.1:8443     \
  --kubeconfig=/etc/kubernetes/admin.kubeconfig
# 该命令用于配置一个名为"kubernetes"的集群，并将其应用到/etc/kubernetes/scheduler.kubeconfig文件中。
# 
# 该命令的解释如下：
# - `kubectl config set-cluster kubernetes`: 设置一个集群并命名为"kubernetes"。
# - `--certificate-authority=/etc/kubernetes/pki/ca.pem`: 指定集群使用的证书授权机构的路径。
# - `--embed-certs=true`: 该标志指示将证书嵌入到生成的kubeconfig文件中。
# - `--server=https://127.0.0.1:8443`: 指定集群的 API server 位置。
# - `--kubeconfig=/etc/kubernetes/admin.kubeconfig`: 指定要保存 kubeconfig 文件的路径和名称。

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
# 上述命令是使用`kubectl`命令来配置Kubernetes集群中的调度器组件。
# 
# `kubectl config use-context`命令用于切换`kubectl`当前使用的上下文。上下文是Kubernetes集群、用户和命名空间的组合，用于确定`kubectl`的连接目标。下面解释这个命令的不同部分：
# 
# - `kubernetes-admin@kubernetes`是一个上下文名称。它指定了使用`kubernetes-admin`用户和`kubernetes`命名空间的系统级别上下文。系统级别上下文用于操作Kubernetes核心组件。
# 
# - `--kubeconfig=/etc/kubernetes/admin.kubeconfig`用于指定Kubernetes配置文件的路径。Kubernetes配置文件包含连接到Kubernetes集群所需的身份验证和连接信息。
# 
# 通过运行以上命令，`kubectl`将使用指定的上下文和配置文件，以便在以后的命令中能正确地与Kubernetes集群中的调度器组件进行交互。

3.2.7 创建kube-proxy证书

在《5.高可用配置》选择使用那种高可用方案
若使用 haproxy、keepalived 那么为 --server=https://192.168.1.36:9443
若使用 nginx方案，那么为 --server=https://127.0.0.1:8443

cat > kube-proxy-csr.json  << EOF 
{
  "CN": "system:kube-proxy",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "Beijing",
      "L": "Beijing",
      "O": "system:kube-proxy",
      "OU": "Kubernetes-manual"
    }
  ]
}
EOF

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

# 在《5.高可用配置》选择使用那种高可用方案
# 若使用 haproxy、keepalived 那么为 `--server=https://192.168.1.36:9443`
# 若使用 nginx方案，那么为 `--server=https://127.0.0.1:8443`

kubectl config set-cluster kubernetes     \
  --certificate-authority=/etc/kubernetes/pki/ca.pem     \
  --embed-certs=true     \
  --server=https://127.0.0.1:8443     \
  --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig


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

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

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

3.2.8 创建ServiceAccount Key ——secret

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

3.2.9 将证书发送到其他master节点

#其他节点创建目录
# mkdir  /etc/kubernetes/pki/ -p

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

3.2.10 查看证书

[root@k8s-master01 cby]# ll /etc/kubernetes/pki/
总计 104
-rw-r--r--. 1 root root 1025  4月26日 19:22 admin.csr
-rw-------. 1 root root 1679  4月26日 19:22 admin-key.pem
-rw-r--r--. 1 root root 1444  4月26日 19:22 admin.pem
-rw-r--r--. 1 root root 1415  4月26日 19:22 apiserver.csr
-rw-------. 1 root root 1679  4月26日 19:22 apiserver-key.pem
-rw-r--r--. 1 root root 1805  4月26日 19:22 apiserver.pem
-rw-r--r--. 1 root root 1070  4月26日 19:22 ca.csr
-rw-------. 1 root root 1675  4月26日 19:22 ca-key.pem
-rw-r--r--. 1 root root 1363  4月26日 19:22 ca.pem
-rw-r--r--. 1 root root 1082  4月26日 19:22 controller-manager.csr
-rw-------. 1 root root 1679  4月26日 19:22 controller-manager-key.pem
-rw-r--r--. 1 root root 1501  4月26日 19:22 controller-manager.pem
-rw-r--r--. 1 root root  940  4月26日 19:22 front-proxy-ca.csr
-rw-------. 1 root root 1675  4月26日 19:22 front-proxy-ca-key.pem
-rw-r--r--. 1 root root 1094  4月26日 19:22 front-proxy-ca.pem
-rw-r--r--. 1 root root  903  4月26日 19:22 front-proxy-client.csr
-rw-------. 1 root root 1675  4月26日 19:22 front-proxy-client-key.pem
-rw-r--r--. 1 root root 1188  4月26日 19:22 front-proxy-client.pem
-rw-r--r--. 1 root root 1045  4月26日 19:22 kube-proxy.csr
-rw-------. 1 root root 1679  4月26日 19:22 kube-proxy-key.pem
-rw-r--r--. 1 root root 1464  4月26日 19:22 kube-proxy.pem
-rw-------. 1 root root 1704  4月26日 19:23 sa.key
-rw-r--r--. 1 root root  451  4月26日 19:23 sa.pub
-rw-r--r--. 1 root root 1058  4月26日 19:22 scheduler.csr
-rw-------. 1 root root 1675  4月26日 19:22 scheduler-key.pem
-rw-r--r--. 1 root root 1476  4月26日 19:22 scheduler.pem
[root@k8s-master01 cby]# 

[root@k8s-master01 cby]# ll /etc/kubernetes/pki/ | wc -l
27
[root@k8s-master01 cby]# 

4.k8s系统组件配置

4.1.etcd配置

详见完整版 https://github.com/cby-chen/Kubernetes

4.1.1master01配置

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://192.168.1.31:2380'
listen-client-urls: 'https://192.168.1.31:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.1.31:2380'
advertise-client-urls: 'https://192.168.1.31:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://192.168.1.31:2380,k8s-master02=https://192.168.1.32:2380,k8s-master03=https://192.168.1.33:2380'
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

4.1.2master02配置

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://192.168.1.32:2380'
listen-client-urls: 'https://192.168.1.32:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.1.32:2380'
advertise-client-urls: 'https://192.168.1.32:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://192.168.1.31:2380,k8s-master02=https://192.168.1.32:2380,k8s-master03=https://192.168.1.33:2380'
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

4.1.3master03配置

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://192.168.1.33:2380'
listen-client-urls: 'https://192.168.1.33:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.1.33:2380'
advertise-client-urls: 'https://192.168.1.33:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://192.168.1.31:2380,k8s-master02=https://192.168.1.32:2380,k8s-master03=https://192.168.1.33:2380'
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

4.2.创建service（所有master节点操作）

4.2.1创建etcd.service并启动

cat > /usr/lib/systemd/system/etcd.service << EOF

[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
TimeoutSec=0
RestartSec=60
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity

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

EOF

4.2.2创建etcd证书目录

mkdir /etc/kubernetes/pki/etcd
ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/

systemctl daemon-reload
systemctl enable --now etcd.service
systemctl restart etcd.service
systemctl status etcd.service

4.2.3查看etcd状态

etcdctl --endpoints="192.168.1.33:2379,192.168.1.32:2379,192.168.1.31:2379" --cacert=/etc/kubernetes/pki/etcd/etcd-ca.pem --cert=/etc/kubernetes/pki/etcd/etcd.pem --key=/etc/kubernetes/pki/etcd/etcd-key.pem  endpoint status --write-out=table

+-------------------+------------------+---------+-----------------+---------+--------+-----------------------+--------+-----------+------------+-----------+------------+--------------------+--------+--------------------------+-------------------+
|     ENDPOINT      |        ID        | VERSION | STORAGE VERSION | DB SIZE | IN USE | PERCENTAGE NOT IN USE | QUOTA  | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS | DOWNGRADE TARGET VERSION | DOWNGRADE ENABLED |
+-------------------+------------------+---------+-----------------+---------+--------+-----------------------+--------+-----------+------------+-----------+------------+--------------------+--------+--------------------------+-------------------+
| 192.168.1.33:2379 |  8065f2e59c8d68c |  3.6.11 |           3.6.0 |   20 kB |  16 kB |                   20% | 2.1 GB |     false |      false |         3 |         13 |                 13 |        |                          |             false |
| 192.168.1.32:2379 | b7b7ad6bf4db3f28 |  3.6.11 |           3.6.0 |   20 kB |  16 kB |                   20% | 2.1 GB |     false |      false |         3 |         13 |                 13 |        |                          |             false |
| 192.168.1.31:2379 | bf047bcfe3b9bf27 |  3.6.11 |           3.6.0 |   20 kB |  16 kB |                   20% | 2.1 GB |      true |      false |         3 |         13 |                 13 |        |                          |             false |
+-------------------+------------------+---------+-----------------+---------+--------+-----------------------+--------+-----------+------------+-----------+------------+--------------------+--------+--------------------------+-------------------+

5.高可用配置（在Master服务器上操作）

注意 5.1.1 和5.1.2 二选一即可*

选择使用那种高可用方案，同时可以俩种都选用，实现内外兼顾的效果，比如：
5.1 的 NGINX方案实现集群内的高可用
5.2 的 haproxy、keepalived 方案实现集群外访问

在《3.2.生成k8s相关证书》

若使用 nginx方案，那么为 --server=https://127.0.0.1:8443
若使用 haproxy、keepalived 那么为 --server=https://192.168.1.36:9443

5.1 NGINX高可用方案

5.1.1 进行编译

# 安装编译环境
yum install gcc -y

# 下载解压nginx二进制文件
# wget http://nginx.org/download/nginx-1.25.3.tar.gz
tar xvf nginx-*.tar.gz
cd nginx-*

# 进行编译
./configure --with-stream --without-http --without-http_uwsgi_module --without-http_scgi_module --without-http_fastcgi_module
make && make install 

# 拷贝编译好的nginx
node='k8s-master02 k8s-master03 k8s-node01 k8s-node02'
for NODE in $node; do scp -r /usr/local/nginx/ $NODE:/usr/local/nginx/; done

5.1.2 写入启动配置

在所有主机上执行

# 写入nginx配置文件
cat > /usr/local/nginx/conf/kube-nginx.conf <<EOF
worker_processes 1;
events {
    worker_connections  1024;
}
stream {
    upstream backend {
        least_conn;
        hash $remote_addr consistent;
        server 192.168.1.31:6443        max_fails=3 fail_timeout=30s;
        server 192.168.1.32:6443        max_fails=3 fail_timeout=30s;
        server 192.168.1.33:6443        max_fails=3 fail_timeout=30s;
    }
    server {
        listen 127.0.0.1:8443;
        proxy_connect_timeout 1s;
        proxy_pass backend;
    }
}
EOF

# 写入启动配置文件
cat > /etc/systemd/system/kube-nginx.service <<EOF
[Unit]
Description=kube-apiserver nginx proxy
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=forking
ExecStartPre=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/kube-nginx.conf -p /usr/local/nginx -t
ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/kube-nginx.conf -p /usr/local/nginx
ExecReload=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/kube-nginx.conf -p /usr/local/nginx -s reload
PrivateTmp=true
Restart=always
RestartSec=5
StartLimitInterval=0
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

# 设置开机自启
systemctl daemon-reload
systemctl enable --now kube-nginx.service
systemctl restart kube-nginx.service
systemctl status kube-nginx.service

5.2 keepalived和haproxy 高可用方案

5.2.1安装keepalived和haproxy服务

systemctl disable --now firewalld
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config
yum -y install keepalived haproxy

5.2.2修改haproxy配置文件（配置文件一样）

cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak
cat >/etc/haproxy/haproxy.cfg<<"EOF"
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 0.0.0.0:9443
 bind 127.0.0.1:9443
 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  k8s-master01  192.168.1.31:6443 check
 server  k8s-master02  192.168.1.32:6443 check
 server  k8s-master03  192.168.1.33:6443 check
EOF

参数

详见完整版 https://github.com/cby-chen/Kubernetes

5.2.3Master01配置keepalived master节点

cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
    interval 5 
    weight -5
    fall 2
    rise 1
}
vrrp_instance VI_1 {
    state MASTER
    # 注意网卡名
    interface ens32 
    mcast_src_ip 192.168.1.31
    virtual_router_id 51
    priority 100
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        192.168.1.36
    }
    track_script {
      chk_apiserver 
} }

EOF

5.2.4Master02配置keepalived backup节点

cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
    interval 5 
    weight -5
    fall 2
    rise 1

}
vrrp_instance VI_1 {
    state BACKUP
    # 注意网卡名
    interface ens32
    mcast_src_ip 192.168.1.32
    virtual_router_id 51
    priority 80
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        192.168.1.36
    }
    track_script {
      chk_apiserver 
} }

EOF

5.2.5Master03配置keepalived backup节点

cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
    interval 5 
    weight -5
    fall 2
    rise 1

}
vrrp_instance VI_1 {
    state BACKUP
    # 注意网卡名
    interface ens32
    mcast_src_ip 192.168.1.33
    virtual_router_id 51
    priority 50
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        192.168.1.36
    }
    track_script {
      chk_apiserver 
} }

EOF

参数

详见完整版 https://github.com/cby-chen/Kubernetes

5.2.6健康检查脚本配置（lb主机）

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

# 给脚本授权

chmod +x /etc/keepalived/check_apiserver.sh

5.2.7启动服务

systemctl daemon-reload
systemctl enable --now haproxy.service
systemctl enable --now keepalived.service
systemctl status haproxy.service
systemctl status keepalived.service

5.2.8测试高可用

# 能ping同
[root@k8s-node02 ~]# ping 192.168.1.36

# 能telnet访问
[root@k8s-node02 ~]# telnet 192.168.1.36 9443

# 关闭主节点，看vip是否漂移到备节点

6.k8s组件配置

详见完整版 https://github.com/cby-chen/Kubernetes