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社区首页 >专栏 >二进制安装Kubernetes（k8s） v1.24.3 IPv4/IPv6双栈 --- （上）

二进制安装Kubernetes（k8s） v1.24.3 IPv4/IPv6双栈 --- （上）

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小陈运维
发布于 2022-07-14 18:43:04
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发布于 2022-07-14 18:43:04
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文章被收录于专栏：小陈运维小陈运维小陈运维

二进制安装Kubernetes（k8s） v1.24.3 IPv4/IPv6双栈

Kubernetes 开源不易，帮忙点个star，谢谢了🌹

介绍

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

我使用IPV6的目的是在公网进行访问，所以我配置了IPV6静态地址。

若您没有IPV6环境，或者不想使用IPv6，不对主机进行配置IPv6地址即可。

不配置IPV6，不影响后续，不过集群依旧是支持IPv6的。为后期留有扩展可能性。

若不要IPv6 ，不给网卡配置IPv6即可，不要对IPv6相关配置删除或操作，否则会出问题。

https://github.com/cby-chen/Kubernetes/releases

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

脚本项目地址：https://github.com/cby-chen/Binary_installation_of_Kubernetes

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。

1.21.13 和 1.22.10 和 1.23.3 和 1.23.4 和 1.23.5 和 1.23.6 和 1.23.7 和 1.24.0 和 1.24.1 和 1.24.2 和 1.24.3 文档以及安装包已生成。

1.环境

主机名称

IP地址

说明

软件

Master01

192.168.1.61

master节点

kube-apiserver、kube-controller-manager、kube-scheduler、etcd、 kubelet、kube-proxy、nfs-client

Master02

192.168.1.62

master节点

kube-apiserver、kube-controller-manager、kube-scheduler、etcd、 kubelet、kube-proxy、nfs-client

Master03

192.168.1.63

master节点

kube-apiserver、kube-controller-manager、kube-scheduler、etcd、 kubelet、kube-proxy、nfs-client

Node01

192.168.1.64

node节点

kubelet、kube-proxy、nfs-client

Node02

192.168.1.65

node节点

kubelet、kube-proxy、nfs-client

Node03

192.168.1.66

node节点

kubelet、kube-proxy、nfs-client

Node04

192.168.1.67

node节点

kubelet、kube-proxy、nfs-client

Node05

192.168.1.68

node节点

kubelet、kube-proxy、nfs-client

Lb01

192.168.1.70

Lb01节点

haproxy、keepalived

Lb02

192.168.1.80

Lb02节点

haproxy、keepalived

192.168.1.69

VIP

软件

版本

kernel

5.18.0-1.el8

CentOS 8

v8 或者 v7

kube-apiserver、kube-controller-manager、kube-scheduler、kubelet、kube-proxy

v1.24.3

etcd

v3.5.4

containerd

v1.6.6

cfssl

v1.6.1

cni

v1.1.1

crictl

v1.24.2

haproxy

v1.8.27

keepalived

v2.1.5

网段

物理主机：192.168.1.0/24

service：10.96.0.0/12

pod：172.16.0.0/12

建议k8s集群与etcd集群分开安装

安装包已经整理好：https://github.com/cby-chen/Kubernetes/releases/download/v1.24.3/kubernetes-v1.24.3.tar

1.1.k8s基础系统环境配置

1.2.配置IP

ssh root@192.168.1.100 "nmcli con mod ens18 ipv4.addresses 192.168.1.61/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.106 "nmcli con mod ens18 ipv4.addresses 192.168.1.62/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.110 "nmcli con mod ens18 ipv4.addresses 192.168.1.63/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.114 "nmcli con mod ens18 ipv4.addresses 192.168.1.64/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.115 "nmcli con mod ens18 ipv4.addresses 192.168.1.65/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.116 "nmcli con mod ens18 ipv4.addresses 192.168.1.66/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.117 "nmcli con mod ens18 ipv4.addresses 192.168.1.67/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.118 "nmcli con mod ens18 ipv4.addresses 192.168.1.68/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.119 "nmcli con mod ens18 ipv4.addresses 192.168.1.70/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.120 "nmcli con mod ens18 ipv4.addresses 192.168.1.80/24; nmcli con mod ens18 ipv4.gateway 10.0.0.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns "8.8.8.8"; nmcli con up ens18"


ssh root@192.168.1.61 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::10; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.62 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::20; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.63 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::30; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.64 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::40; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.65 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::50; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.66 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::60; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.67 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::70; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.68 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::80; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.70 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::90; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"
ssh root@192.168.1.80 "nmcli con mod ens18 ipv6.addresses 2408:8207:78cc:5cc1:181c::100; nmcli con mod ens18 ipv6.gateway fe80::2e2:69ff:fe3f:b198; nmcli con mod ens18 ipv6.method manual; nmcli con mod ens18 ipv6.dns "2001:4860:4860::8888"; nmcli con up ens18"

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
hostnamectl set-hostname k8s-node03
hostnamectl set-hostname k8s-node04
hostnamectl set-hostname k8s-node05
hostnamectl set-hostname lb01
hostnamectl set-hostname lb02

1.4.配置yum源

# 对于 CentOS 7
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' \
         -e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' \
         -i.bak \
         /etc/yum.repos.d/CentOS-*.repo

# 对于 CentOS 8
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' \
         -e 's|^#baseurl=http://mirror.centos.org/$contentdir|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos|g' \
         -i.bak \
         /etc/yum.repos.d/CentOS-*.repo

# 对于私有仓库
sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org/\$contentdir|baseurl=http://192.168.1.123/centos|g' -i.bak  /etc/yum.repos.d/CentOS-*.repo

1.5.安装一些必备工具

yum -y install wget jq psmisc vim net-tools nfs-utils telnet yum-utils device-mapper-persistent-data lvm2 git network-scripts tar curl -y

1.6.选择性下载需要工具

1.下载kubernetes1.24.+的二进制包
github二进制包下载地址：https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.24.md

wget https://dl.k8s.io/v1.24.2/kubernetes-server-linux-amd64.tar.gz

2.下载etcdctl二进制包
github二进制包下载地址：https://github.com/etcd-io/etcd/releases

wget https://github.com/etcd-io/etcd/releases/download/v3.5.4/etcd-v3.5.4-linux-amd64.tar.gz

3.containerd二进制包下载
github下载地址：https://github.com/containerd/containerd/releases

4.containerd下载时下载带cni插件的二进制包。
wget https://github.com/containerd/containerd/releases/download/v1.6.6/cri-containerd-cni-1.6.6-linux-amd64.tar.gz

5.下载cfssl二进制包
github二进制包下载地址：https://github.com/cloudflare/cfssl/releases

wget https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl_1.6.1_linux_amd64
wget https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssljson_1.6.1_linux_amd64
wget https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssl-certinfo_1.6.1_linux_amd64

6.cni插件下载
github下载地址：https://github.com/containernetworking/plugins/releases

wget https://github.com/containernetworking/plugins/releases/download/v1.1.1/cni-plugins-linux-amd64-v1.1.1.tgz

7.crictl客户端二进制下载
github下载：https://github.com/kubernetes-sigs/cri-tools/releases

wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.24.2/crictl-v1.24.2-linux-amd64.tar.gz

1.7.关闭防火墙

systemctl disable --now firewalld

1.8.关闭SELinux

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）

# 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*
EOF
systemctl restart NetworkManager

1.11.进行时间同步 (lb除外)

# 服务端

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 10.0.0.0/24
local stratum 10
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF

systemctl restart chronyd ; systemctl enable chronyd

# 客户端

yum install chrony -y
cat > /etc/chrony.conf << EOF 
pool 192.168.1.61 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

yum install -y sshpass
ssh-keygen -f /root/.ssh/id_rsa -P ''
export IP="192.168.1.61 192.168.1.62 192.168.1.63 192.168.1.64 192.168.1.65 192.168.1.66 192.168.1.67 192.168.1.68 192.168.1.70 192.168.1.80"
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 (lb除外)

# 为 RHEL-8或 CentOS-8配置源
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 

# 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 (lb除外)

# 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  --enablerepo=elrepo-kernel  install  kernel-ml

# 查看已安装那些内核
rpm -qa | grep kernel
kernel-core-4.18.0-358.el8.x86_64
kernel-tools-4.18.0-358.el8.x86_64
kernel-ml-core-5.16.7-1.el8.elrepo.x86_64
kernel-ml-5.16.7-1.el8.elrepo.x86_64
kernel-modules-4.18.0-358.el8.x86_64
kernel-4.18.0-358.el8.x86_64
kernel-tools-libs-4.18.0-358.el8.x86_64
kernel-ml-modules-5.16.7-1.el8.elrepo.x86_64

# 查看默认内核
grubby --default-kernel
/boot/vmlinuz-5.16.7-1.el8.elrepo.x86_64

# 若不是最新的使用命令设置
grubby --set-default /boot/vmlinuz-「您的内核版本」.x86_64

# 重启生效
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-ml -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-ml -y ; grubby --set-default $(ls /boot/vmlinuz-* | grep elrepo) ; grubby --default-kernel ; reboot

1.16.安装ipvsadm (lb除外)

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                 180224  6 ip_vs_rr,ip_vs_sh,ip_vs_wrr
nf_conntrack          176128  1 ip_vs
nf_defrag_ipv6         24576  2 nf_conntrack,ip_vs
nf_defrag_ipv4         16384  1 nf_conntrack
libcrc32c              16384  3 nf_conntrack,xfs,ip_vs

1.17.修改内核参数 (lb除外)

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

2408:8207:78cc:5cc1:181c::10 k8s-master01
2408:8207:78cc:5cc1:181c::20 k8s-master02
2408:8207:78cc:5cc1:181c::30 k8s-master03
2408:8207:78cc:5cc1:181c::40 k8s-node01
2408:8207:78cc:5cc1:181c::50 k8s-node02
2408:8207:78cc:5cc1:181c::60 k8s-node03
2408:8207:78cc:5cc1:181c::70 k8s-node04
2408:8207:78cc:5cc1:181c::80 k8s-node05
2408:8207:78cc:5cc1:181c::90 lb01
2408:8207:78cc:5cc1:181c::100 lb02

192.168.1.61 k8s-master01
192.168.1.62 k8s-master02
192.168.1.63 k8s-master03
192.168.1.64 k8s-node01
192.168.1.65 k8s-node02
192.168.1.66 k8s-node03
192.168.1.67 k8s-node04
192.168.1.68 k8s-node05
192.168.1.70 lb01
192.168.1.80 lb02
192.168.1.69 lb-vip
EOF

2.k8s基本组件安装

2.1.所有k8s节点安装Containerd作为Runtime

# wget https://github.com/containernetworking/plugins/releases/download/v1.1.1/cni-plugins-linux-amd64-v1.1.1.tgz

#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-v1.1.1.tgz -C /opt/cni/bin/

# wget https://github.com/containerd/containerd/releases/download/v1.6.6/cri-containerd-cni-1.6.6-linux-amd64.tar.gz

#解压
tar -xzf cri-containerd-cni-1.6.6-linux-amd64.tar.gz -C /

#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

sed -i "s#k8s.gcr.io#registry.cn-hangzhou.aliyuncs.com/chenby#g" /etc/containerd/config.toml
cat /etc/containerd/config.toml | grep sandbox_image

2.1.5启动并设置为开机启动

systemctl daemon-reload
systemctl enable --now containerd

2.1.6配置crictl客户端连接的运行时位置

# wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.24.2/crictl-v1.24.2-linux-amd64.tar.gz

#解压
tar xf crictl-v1.24.2-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.k8s与etcd下载及安装（仅在master01操作）

2.2.1解压k8s安装包

# 下载安装包
# wget https://dl.k8s.io/v1.24.2/kubernetes-server-linux-amd64.tar.gz
# wget https://github.com/etcd-io/etcd/releases/download/v3.5.4/etcd-v3.5.4-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

ls /usr/local/bin/
containerd  containerd-shim-runc-v1  containerd-stress  critest  ctr   etcdctl  kube-controller-manager  kubelet  kube-scheduler  containerd-shim  containerd-shim-runc-v2  crictl  ctd-decoder  etcd  kube-apiserver  kubectl  kube-proxy

2.2.2查看版本

[root@k8s-master01 ~]#  kubelet --version
Kubernetes v1.24.3
[root@k8s-master01 ~]# etcdctl version
etcdctl version: 3.5.4
API version: 3.5
[root@k8s-master01 ~]#

2.2.3将组件发送至其他k8s节点

Master='k8s-master02 k8s-master03'
Work='k8s-node01 k8s-node02 k8s-node03 k8s-node04 k8s-node05'

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

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

mkdir -p /opt/cni/bin

2.3创建证书相关文件

mkdir pki
cd pki
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

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

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

cat > kubelet-csr.json  << EOF 
{
  "CN": "system:node:\$NODE",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "Beijing",
      "ST": "Beijing",
      "O": "system:nodes",
      "OU": "Kubernetes-manual"
    }
  ]
}
EOF

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

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


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

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


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


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


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

cd ..
mkdir bootstrap
cd bootstrap
cat > bootstrap.secret.yaml << EOF 
apiVersion: v1
kind: Secret
metadata:
  name: bootstrap-token-c8ad9c
  namespace: kube-system
type: bootstrap.kubernetes.io/token
stringData:
  description: "The default bootstrap token generated by 'kubelet '."
  token-id: c8ad9c
  token-secret: 2e4d610cf3e7426e
  usage-bootstrap-authentication: "true"
  usage-bootstrap-signing: "true"
  auth-extra-groups:  system:bootstrappers:default-node-token,system:bootstrappers:worker,system:bootstrappers:ingress
 
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubelet-bootstrap
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:node-bootstrapper
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: node-autoapprove-bootstrap
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:certificates.k8s.io:certificatesigningrequests:nodeclient
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:bootstrappers:default-node-token
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: node-autoapprove-certificate-rotation
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:certificates.k8s.io:certificatesigningrequests:selfnodeclient
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: Group
  name: system:nodes
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:kube-apiserver-to-kubelet
rules:
  - apiGroups:
      - ""
    resources:
      - nodes/proxy
      - nodes/stats
      - nodes/log
      - nodes/spec
      - nodes/metrics
    verbs:
      - "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: system:kube-apiserver
  namespace: ""
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:kube-apiserver-to-kubelet
subjects:
  - apiGroup: rbac.authorization.k8s.io
    kind: User
    name: kube-apiserver
EOF


cd ..
mkdir coredns
cd coredns
cat > coredns.yaml << EOF 
apiVersion: v1
kind: ServiceAccount
metadata:
  name: coredns
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:coredns
rules:
  - apiGroups:
    - ""
    resources:
    - endpoints
    - services
    - pods
    - namespaces
    verbs:
    - list
    - watch
  - apiGroups:
    - discovery.k8s.io
    resources:
    - endpointslices
    verbs:
    - list
    - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:coredns
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:coredns
subjects:
- kind: ServiceAccount
  name: coredns
  namespace: kube-system
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: coredns
  namespace: kube-system
data:
  Corefile: |
    .:53 {
        errors
        health {
          lameduck 5s
        }
        ready
        kubernetes cluster.local in-addr.arpa ip6.arpa {
          fallthrough in-addr.arpa ip6.arpa
        }
        prometheus :9153
        forward . /etc/resolv.conf {
          max_concurrent 1000
        }
        cache 30
        loop
        reload
        loadbalance
    }
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: coredns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
    kubernetes.io/name: "CoreDNS"
spec:
  # replicas: not specified here:
  # 1. Default is 1.
  # 2. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  selector:
    matchLabels:
      k8s-app: kube-dns
  template:
    metadata:
      labels:
        k8s-app: kube-dns
    spec:
      priorityClassName: system-cluster-critical
      serviceAccountName: coredns
      tolerations:
        - key: "CriticalAddonsOnly"
          operator: "Exists"
      nodeSelector:
        kubernetes.io/os: linux
      affinity:
         podAntiAffinity:
           preferredDuringSchedulingIgnoredDuringExecution:
           - weight: 100
             podAffinityTerm:
               labelSelector:
                 matchExpressions:
                   - key: k8s-app
                     operator: In
                     values: ["kube-dns"]
               topologyKey: kubernetes.io/hostname
      containers:
      - name: coredns
        image: registry.cn-beijing.aliyuncs.com/dotbalo/coredns:1.8.6 
        imagePullPolicy: IfNotPresent
        resources:
          limits:
            memory: 170Mi
          requests:
            cpu: 100m
            memory: 70Mi
        args: [ "-conf", "/etc/coredns/Corefile" ]
        volumeMounts:
        - name: config-volume
          mountPath: /etc/coredns
          readOnly: true
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        - containerPort: 9153
          name: metrics
          protocol: TCP
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            add:
            - NET_BIND_SERVICE
            drop:
            - all
          readOnlyRootFilesystem: true
        livenessProbe:
          httpGet:
            path: /health
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        readinessProbe:
          httpGet:
            path: /ready
            port: 8181
            scheme: HTTP
      dnsPolicy: Default
      volumes:
        - name: config-volume
          configMap:
            name: coredns
            items:
            - key: Corefile
              path: Corefile
---
apiVersion: v1
kind: Service
metadata:
  name: kube-dns
  namespace: kube-system
  annotations:
    prometheus.io/port: "9153"
    prometheus.io/scrape: "true"
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    kubernetes.io/name: "CoreDNS"
spec:
  selector:
    k8s-app: kube-dns
  clusterIP: 10.96.0.10 
  ports:
  - name: dns
    port: 53
    protocol: UDP
  - name: dns-tcp
    port: 53
    protocol: TCP
  - name: metrics
    port: 9153
    protocol: TCP
EOF


cd ..
mkdir metrics-server
cd metrics-server
cat > metrics-server.yaml << EOF 
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-app: metrics-server
    rbac.authorization.k8s.io/aggregate-to-admin: "true"
    rbac.authorization.k8s.io/aggregate-to-edit: "true"
    rbac.authorization.k8s.io/aggregate-to-view: "true"
  name: system:aggregated-metrics-reader
rules:
- apiGroups:
  - metrics.k8s.io
  resources:
  - pods
  - nodes
  verbs:
  - get
  - list
  - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-app: metrics-server
  name: system:metrics-server
rules:
- apiGroups:
  - ""
  resources:
  - pods
  - nodes
  - nodes/stats
  - namespaces
  - configmaps
  verbs:
  - get
  - list
  - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server-auth-reader
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server:system:auth-delegator
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:auth-delegator
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: system:metrics-server
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:metrics-server
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  ports:
  - name: https
    port: 443
    protocol: TCP
    targetPort: https
  selector:
    k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  selector:
    matchLabels:
      k8s-app: metrics-server
  strategy:
    rollingUpdate:
      maxUnavailable: 0
  template:
    metadata:
      labels:
        k8s-app: metrics-server
    spec:
      containers:
      - args:
        - --cert-dir=/tmp
        - --secure-port=4443
        - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
        - --kubelet-use-node-status-port
        - --metric-resolution=15s
        - --kubelet-insecure-tls
        - --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem # change to front-proxy-ca.crt for kubeadm
        - --requestheader-username-headers=X-Remote-User
        - --requestheader-group-headers=X-Remote-Group
        - --requestheader-extra-headers-prefix=X-Remote-Extra-
        image: registry.cn-beijing.aliyuncs.com/dotbalo/metrics-server:0.5.0
        imagePullPolicy: IfNotPresent
        livenessProbe:
          failureThreshold: 3
          httpGet:
            path: /livez
            port: https
            scheme: HTTPS
          periodSeconds: 10
        name: metrics-server
        ports:
        - containerPort: 4443
          name: https
          protocol: TCP
        readinessProbe:
          failureThreshold: 3
          httpGet:
            path: /readyz
            port: https
            scheme: HTTPS
          initialDelaySeconds: 20
          periodSeconds: 10
        resources:
          requests:
            cpu: 100m
            memory: 200Mi
        securityContext:
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1000
        volumeMounts:
        - mountPath: /tmp
          name: tmp-dir
        - name: ca-ssl
          mountPath: /etc/kubernetes/pki
      nodeSelector:
        kubernetes.io/os: linux
      priorityClassName: system-cluster-critical
      serviceAccountName: metrics-server
      volumes:
      - emptyDir: {}
        name: tmp-dir
      - name: ca-ssl
        hostPath:
          path: /etc/kubernetes/pki

---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
  labels:
    k8s-app: metrics-server
  name: v1beta1.metrics.k8s.io
spec:
  group: metrics.k8s.io
  groupPriorityMinimum: 100
  insecureSkipTLSVerify: true
  service:
    name: metrics-server
    namespace: kube-system
  version: v1beta1
  versionPriority: 100
EOF

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/v1.6.1/cfssl_1.6.1_linux_amd64" -O /usr/local/bin/cfssl
# wget "https://github.com/cloudflare/cfssl/releases/download/v1.6.1/cfssljson_1.6.1_linux_amd64" -O /usr/local/bin/cfssljson

# 软件包内有
cp cfssl_1.6.1_linux_amd64 /usr/local/bin/cfssl
cp cfssljson_1.6.1_linux_amd64 /usr/local/bin/cfssljson

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

cd pki
# 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）
cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca
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-master03,192.168.1.61,192.168.1.62,192.168.1.63,2408:8207:78cc:5cc1:181c::10,2408:8207:78cc:5cc1:181c::20,2408:8207:78cc:5cc1:181c::30 \
   -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

3.2.2master01节点生成k8s证书

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

# 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，192.168.1.69为高可用vip地址

cfssl gencert   \
-ca=/etc/kubernetes/pki/ca.pem   \
-ca-key=/etc/kubernetes/pki/ca-key.pem   \
-config=ca-config.json   \
-hostname=10.96.0.1,192.168.1.69,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,x.oiox.cn,k.oiox.cn,l.oiox.cn,o.oiox.cn,192.168.1.61,192.168.1.62,192.168.1.63,192.168.1.64,192.168.1.65,192.168.1.66,192.168.1.67,192.168.1.68,192.168.1.80,192.168.1.80,10.0.0.40,10.0.0.41,2408:8207:78cc:5cc1:181c::10,2408:8207:78cc:5cc1:181c::20,2408:8207:78cc:5cc1:181c::30,2408:8207:78cc:5cc1:181c::40,2408:8207:78cc:5cc1:181c::50,2408:8207:78cc:5cc1:181c::60,2408:8207:78cc:5cc1:181c::70,2408:8207:78cc:5cc1:181c::80,2408:8207:78cc:5cc1:181c::90,2408:8207:78cc:5cc1:181c::100   \
-profile=kubernetes   apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver

3.2.3生成apiserver聚合证书

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

# 有一个警告，可以忽略

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

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

kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://192.168.1.69:8443 \
     --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

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

kubectl config set-cluster kubernetes \
     --certificate-authority=/etc/kubernetes/pki/ca.pem \
     --embed-certs=true \
     --server=https://192.168.1.69:8443 \
     --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

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

kubectl config set-cluster kubernetes     \
  --certificate-authority=/etc/kubernetes/pki/ca.pem     \
  --embed-certs=true     \
  --server=https://192.168.1.69:8443     \
  --kubeconfig=/etc/kubernetes/admin.kubeconfig

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

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

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

3.2.5创建kube-proxy证书

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
   
kubectl config set-cluster kubernetes     \
  --certificate-authority=/etc/kubernetes/pki/ca.pem     \
  --embed-certs=true     \
  --server=https://192.168.1.69:8443     \
  --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

3.2.5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

3.2.6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

3.2.7查看证书

ls /etc/kubernetes/pki/
admin.csr          ca.csr                      front-proxy-ca.csr          kube-proxy.csr      scheduler-key.pem
admin-key.pem      ca-key.pem                  front-proxy-ca-key.pem      kube-proxy-key.pem  scheduler.pem
admin.pem          ca.pem                      front-proxy-ca.pem          kube-proxy.pem
apiserver.csr      controller-manager.csr      front-proxy-client.csr      sa.key
apiserver-key.pem  controller-manager-key.pem  front-proxy-client-key.pem  sa.pub
apiserver.pem      controller-manager.pem      front-proxy-client.pem      scheduler.csr

# 一共26个就对了
ls /etc/kubernetes/pki/ |wc -l
26

4.k8s系统组件配置

4.1.etcd配置

4.1.1master01配置

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
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://192.168.1.61:2380'
listen-client-urls: 'https://192.168.1.61:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.1.61:2380'
advertise-client-urls: 'https://192.168.1.61:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://192.168.1.61:2380,k8s-master02=https://192.168.1.62:2380,k8s-master03=https://192.168.1.63:2380'
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

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
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://192.168.1.62:2380'
listen-client-urls: 'https://192.168.1.62:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.1.62:2380'
advertise-client-urls: 'https://192.168.1.62:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://192.168.1.61:2380,k8s-master02=https://192.168.1.62:2380,k8s-master03=https://192.168.1.63:2380'
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

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
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://192.168.1.63:2380'
listen-client-urls: 'https://192.168.1.63:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://192.168.1.63:2380'
advertise-client-urls: 'https://192.168.1.63:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://192.168.1.61:2380,k8s-master02=https://192.168.1.62:2380,k8s-master03=https://192.168.1.63:2380'
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
Restart=on-failure
RestartSec=10
LimitNOFILE=65536

[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

4.2.3查看etcd状态

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
export ETCDCTL_API=3
etcdctl --endpoints="192.168.1.63:2379,192.168.1.62:2379,192.168.1.61:2379" --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 | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+----------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| 192.168.1.63:2379 | c0c8142615b9523f |   3.5.4 |   20 kB |     false |      false |         2 |          9 |                  9 |        |
| 192.168.1.62:2379 | de8396604d2c160d |   3.5.4 |   20 kB |     false |      false |         2 |          9 |                  9 |        |
| 192.168.1.61:2379 | 33c9d6df0037ab97 |   3.5.4 |   20 kB |      true |      false |         2 |          9 |                  9 |        |
+----------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+

[root@k8s-master01 pki]#

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kubernetes
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原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。

如有侵权，请联系 cloudcommunity@tencent.com 删除。

kubernetes
容器服务
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ipv6
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目录
  • 二进制安装Kubernetes（k8s） v1.24.3 IPv4/IPv6双栈
  • 介绍
  • 1.环境
    • 1.1.k8s基础系统环境配置
      • 1.2.配置IP
      • 1.3.设置主机名
      • 1.4.配置yum源
      • 1.5.安装一些必备工具
      • 1.6.选择性下载需要工具
      • 1.7.关闭防火墙
      • 1.8.关闭SELinux
      • 1.9.关闭交换分区
      • 1.10.网络配置（俩种方式二选一）
      • 1.11.进行时间同步 (lb除外)
      • 1.12.配置ulimit
      • 1.13.配置免密登录
      • 1.14.添加启用源 (lb除外)
      • 1.15.升级内核至4.18版本以上 (lb除外)
      • 1.16.安装ipvsadm (lb除外)
      • 1.17.修改内核参数 (lb除外)
      • 1.18.所有节点配置hosts本地解析
  • 2.k8s基本组件安装
    • 2.1.所有k8s节点安装Containerd作为Runtime
      • 2.1.1配置Containerd所需的模块
      • 2.1.2加载模块
      • 2.1.3配置Containerd所需的内核
      • 2.1.4创建Containerd的配置文件
      • 2.1.5启动并设置为开机启动
      • 2.1.6配置crictl客户端连接的运行时位置
    • 2.2.k8s与etcd下载及安装（仅在master01操作）
      • 2.2.1解压k8s安装包
      • 2.2.2查看版本
      • 2.2.3将组件发送至其他k8s节点
    • 2.3创建证书相关文件
    • 3.相关证书生成
      • 3.1.生成etcd证书
        • 3.1.1所有master节点创建证书存放目录
        • 3.1.2master01节点生成etcd证书
        • 3.1.3将证书复制到其他节点
      • 3.2.生成k8s相关证书
        • 3.2.1所有k8s节点创建证书存放目录
        • 3.2.2master01节点生成k8s证书
        • 3.2.3生成apiserver聚合证书
        • 3.2.4生成controller-manage的证书
        • 3.2.5创建kube-proxy证书
        • 3.2.5创建ServiceAccount Key ——secret
        • 3.2.6将证书发送到其他master节点
        • 3.2.7查看证书
    • 4.k8s系统组件配置
      • 4.1.etcd配置
        • 4.1.1master01配置
        • 4.1.2master02配置
        • 4.1.3master03配置
      • 4.2.创建service（所有master节点操作）
        • 4.2.1创建etcd.service并启动
        • 4.2.2创建etcd证书目录
        • 4.2.3查看etcd状态
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