关于kubernetes:二进制安装Kubernetesk8s-v1250-IPv4IPv6双栈

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二进制装置 Kubernetes(k8s)v1.25.0 IPv4/IPv6 双栈

Kubernetes 开源不易,帮忙点个 star,谢谢了

介绍

kubernetes(k8s)二进制高可用装置部署,反对 IPv4+IPv6 双栈。

我应用 IPV6 的目标是在公网进行拜访,所以我配置了 IPV6 动态地址。

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

不配置 IPV6,不影响后续,不过集群仍旧是反对 IPv6 的。为前期留有扩大可能性。

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

https://github.com/cby-chen/K…

手动我的项目地址:https://github.com/cby-chen/K…

脚本我的项目地址:https://github.com/cby-chen/B…

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工夫更新新版本文档。

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 和 1.25.0 文档以及安装包已生成。

1. 环境

主机名称 IP 地址 阐明 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 192.168.1.75 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 v1.25.0
etcd v3.5.4
containerd v1.6.8
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

安装包曾经整顿好:https://github.com/cby-chen/K…

1.1.k8s 根底零碎环境配置

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 192.168.1.1; 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 192.168.1.1; 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 192.168.1.1; 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 192.168.1.1; 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 192.168.1.1; 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 192.168.1.1; 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 192.168.1.1; 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 192.168.1.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns"8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.156 "nmcli con mod ens18 ipv4.addresses 192.168.1.70/24; nmcli con mod ens18 ipv4.gateway 192.168.1.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns"8.8.8.8"; nmcli con up ens18"
ssh root@192.168.1.160 "nmcli con mod ens18 ipv4.addresses 192.168.1.75/24; nmcli con mod ens18 ipv4.gateway 192.168.1.1; nmcli con mod ens18 ipv4.method manual; nmcli con mod ens18 ipv4.dns"8.8.8.8"; nmcli con up ens18"

# 没有 IPv6 抉择不配置即可
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@192.168.1.75 "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

# 对于公有仓库
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. 装置一些必备工具

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. 选择性下载须要工具

1. 下载 kubernetes1.25.+ 的二进制包
github 二进制包下载地址:https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md

wget https://dl.k8s.io/v1.25.0/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/v1.6.8/cri-containerd-cni-1.6.8-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. 敞开防火墙

systemctl disable --now firewalld

1.8. 敞开 SELinux

setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config

1.9. 敞开替换分区

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(俩种形式二选一)

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

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

1.11. 进行工夫同步 (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

#应用客户端进行验证
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="192.168.1.61 192.168.1.62 192.168.1.63 192.168.1.64 192.168.1.65 192.168.1.66 192.168.1.67 192.168.1.68 192.168.1.70 192.168.1.75"
export SSHPASS=123123
for HOST in $IP;do
     sshpass -e ssh-copy-id -o StrictHostKeyChecking=no $HOST
done

1.14. 增加启用源 (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 装置 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. 降级内核至 4.18 版本以上 (lb 除外)

# 装置最新的内核
# 我这里抉择的是稳定版 kernel-ml   如需更新长期保护版本 kernel-lt  
yum  --enablerepo=elrepo-kernel  install  kernel-ml

# 查看已装置那些内核
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

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

# 重启失效
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. 装置 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. 批改内核参数 (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

# 没有 IPv6 抉择不配置即可
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
192.168.1.75 lb02
192.168.1.69 lb-vip
EOF

2.k8s 根本组件装置

2.1. 所有 k8s 节点装置 Containerd 作为 Runtime

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

#创立 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-1.6.8-linux-amd64.tar.gz -C /

#创立服务启动文件
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 创立 Containerd 的配置文件

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

# 批改 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 客户端连贯的运行时地位

# 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 下载及装置(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 v1.25.0
[root@k8s-master01 ~]# etcdctl version
etcdctl version: 3.5.4
API version: 3.5
[root@k8s-master01 ~]# 

2.2.3 将组件发送至其余 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 创立证书相干文件

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. 相干证书生成

# 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

特地阐明除外,以下操作在所有 master 节点操作

3.1.1 所有 master 节点创立证书寄存目录

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(如果你感觉当前可能会扩容,能够在 ip 那多写几个预留进去)# 若没有 IPv6 可删除可保留 
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 将证书复制到其余节点

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 相干证书

特地阐明除外,以下操作在所有 master 节点操作

3.2.1 所有 k8s 节点创立证书寄存目录

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,为未来增加 node 做筹备
# 10.96.0.1 是 service 网段的第一个地址,须要计算,192.168.1.69 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=10.96.0.1,192.168.1.69,127.0.0.1,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,192.168.1.61,192.168.1.62,192.168.1.63,192.168.1.64,192.168.1.65,192.168.1.66,192.168.1.67,192.168.1.68,192.168.1.75,192.168.1.75,10.0.0.40,10.0.0.41,2408:8207:78cc: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 

# 有一个正告,能够疏忽

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 创立 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 创立 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 将证书发送到其余 master 节点

# 其余节点创立目录
# 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 零碎组件配置

4.1.etcd 配置

4.1.1master01 配置

# 如果要用 IPv6 那么把 IPv4 地址批改为 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 地址批改为 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 地址批改为 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. 创立 service(所有 master 节点操作)

4.2.1 创立 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 创立 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 地址批改为 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]# 

5. 高可用配置

5.1 在 lb01 和 lb02 两台服务器上操作

5.1.1 装置 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

5.1.2 批改 haproxy 配置文件(两台配置文件一样)

# 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 0.0.0.0:8443
 bind 127.0.0.1:8443
 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  192.168.1.61:6443 check
 server  k8s-master02  192.168.1.62:6443 check
 server  k8s-master03  192.168.1.63:6443 check
EOF

5.1.3lb01 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
    # 留神网卡名
    interface ens18 
    mcast_src_ip 192.168.1.70
    virtual_router_id 51
    priority 100
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {192.168.1.69}
    track_script {chk_apiserver} }

EOF

5.1.4lb02 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
    # 留神网卡名
    interface ens18
    mcast_src_ip 192.168.1.75
    virtual_router_id 51
    priority 50
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {192.168.1.69}
    track_script {chk_apiserver} }

EOF

5.1.5 健康检查脚本配置(两台 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

# 给脚本受权

chmod +x /etc/keepalived/check_apiserver.sh

5.1.6 启动服务

systemctl daemon-reload
systemctl enable --now haproxy
systemctl enable --now keepalived

5.1.7 测试高可用

# 能 ping 同

[root@k8s-node02 ~]# ping 192.168.1.69

# 能 telnet 拜访

[root@k8s-node02 ~]# telnet 192.168.1.69 8443

# 敞开主节点,看 vip 是否漂移到备节点 

6.k8s 组件配置(区别于第 4 点)

所有 k8s 节点创立以下目录

mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes

6.1. 创立 apiserver(所有 master 节点)

6.1.1master01 节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
      --v=2  \\
      --logtostderr=true  \\
      --allow-privileged=true  \\
      --bind-address=0.0.0.0  \\
      --secure-port=6443  \\
      --advertise-address=192.168.1.61 \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  \\
      --service-node-port-range=30000-32767  \\
      --etcd-servers=https://192.168.1.61:2379,https://192.168.1.62:2379,https://192.168.1.63:2379 \\
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \\
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \\
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \\
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \\
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \
      --authorization-mode=Node,RBAC  \\
      --enable-bootstrap-token-auth=true  \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\
      --requestheader-allowed-names=aggregator  \\
      --requestheader-group-headers=X-Remote-Group  \\
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \\
      --requestheader-username-headers=X-Remote-User \\
      --enable-aggregator-routing=true
      # --feature-gates=IPv6DualStack=true
      # --token-auth-file=/etc/kubernetes/token.csv

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

[Install]
WantedBy=multi-user.target

EOF

6.1.2master02 节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
      --v=2  \\
      --logtostderr=true  \\
      --allow-privileged=true  \\
      --bind-address=0.0.0.0  \\
      --secure-port=6443  \\
      --advertise-address=192.168.1.62 \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  \\
      --service-node-port-range=30000-32767  \\
      --etcd-servers=https://192.168.1.61:2379,https://192.168.1.62:2379,https://192.168.1.63:2379 \\
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \\
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \\
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \\
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \\
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \\
      --authorization-mode=Node,RBAC  \\
      --enable-bootstrap-token-auth=true  \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\
      --requestheader-allowed-names=aggregator  \\
      --requestheader-group-headers=X-Remote-Group  \\
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \\
      --requestheader-username-headers=X-Remote-User \\
      --enable-aggregator-routing=true
      # --feature-gates=IPv6DualStack=true
      # --token-auth-file=/etc/kubernetes/token.csv

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

[Install]
WantedBy=multi-user.target

EOF

6.1.3master03 节点配置

cat > /usr/lib/systemd/system/kube-apiserver.service  << EOF

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
      --v=2  \\
      --logtostderr=true  \\
      --allow-privileged=true  \\
      --bind-address=0.0.0.0  \\
      --secure-port=6443  \\
      --advertise-address=192.168.1.63 \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  \\
      --service-node-port-range=30000-32767  \\
      --etcd-servers=https://192.168.1.61:2379,https://192.168.1.62:2379,https://192.168.1.63:2379 \\
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  \\
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  \\
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  \\
      --client-ca-file=/etc/kubernetes/pki/ca.pem  \\
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  \\
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  \\
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  \\
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  \\
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  \\
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  \\
      --service-account-issuer=https://kubernetes.default.svc.cluster.local \\
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  \\
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  \\
      --authorization-mode=Node,RBAC  \\
      --enable-bootstrap-token-auth=true  \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  \\
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  \\
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  \\
      --requestheader-allowed-names=aggregator  \\
      --requestheader-group-headers=X-Remote-Group  \\
      --requestheader-extra-headers-prefix=X-Remote-Extra-  \\
      --requestheader-username-headers=X-Remote-User \\
      --enable-aggregator-routing=true
      # --feature-gates=IPv6DualStack=true
      # --token-auth-file=/etc/kubernetes/token.csv

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

[Install]
WantedBy=multi-user.target

EOF

6.1.4 启动 apiserver(所有 master 节点)

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

# 留神查看状态是否启动失常
# systemctl status kube-apiserver

6.2. 配置 kube-controller-manager service

# 所有 master 节点配置,且配置雷同
# 172.16.0.0/12 为 pod 网段,按需要设置你本人的网段

cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF

[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-controller-manager \\
      --v=2 \\
      --logtostderr=true \\
      --bind-address=127.0.0.1 \\
      --root-ca-file=/etc/kubernetes/pki/ca.pem \\
      --cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem \\
      --cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem \\
      --service-account-private-key-file=/etc/kubernetes/pki/sa.key \\
      --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig \\
      --leader-elect=true \\
      --use-service-account-credentials=true \\
      --node-monitor-grace-period=40s \\
      --node-monitor-period=5s \\
      --pod-eviction-timeout=2m0s \\
      --controllers=*,bootstrapsigner,tokencleaner \\
      --allocate-node-cidrs=true \\
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108 \\
      --cluster-cidr=172.16.0.0/12,fc00::/48 \\
      --node-cidr-mask-size-ipv4=24 \\
      --node-cidr-mask-size-ipv6=64 \\
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem 
      # --feature-gates=IPv6DualStack=true

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

6.2.1 启动 kube-controller-manager,并查看状态

systemctl daemon-reload
systemctl enable --now kube-controller-manager
# systemctl  status kube-controller-manager

6.3. 配置 kube-scheduler service

6.3.1 所有 master 节点配置,且配置雷同

cat > /usr/lib/systemd/system/kube-scheduler.service << EOF

[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

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

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

6.3.2 启动并查看服务状态

systemctl daemon-reload
systemctl enable --now kube-scheduler
# systemctl status kube-scheduler

7.TLS Bootstrapping 配置

7.1 在 master01 上配置

cd bootstrap

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/bootstrap-kubelet.kubeconfig

kubectl config set-credentials tls-bootstrap-token-user     \
--token=c8ad9c.2e4d610cf3e7426e \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config set-context tls-bootstrap-token-user@kubernetes     \
--cluster=kubernetes     \
--user=tls-bootstrap-token-user     \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config use-context tls-bootstrap-token-user@kubernetes     \
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

# token 的地位在 bootstrap.secret.yaml,如果批改的话到这个文件批改
mkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config

7.2 查看集群状态,没问题的话持续后续操作

kubectl get cs
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME                 STATUS    MESSAGE                         ERROR
scheduler            Healthy   ok                              
controller-manager   Healthy   ok                              
etcd-0               Healthy   {"health":"true","reason":""}   
etcd-2               Healthy   {"health":"true","reason":""}   
etcd-1               Healthy   {"health":"true","reason":""} 

# 切记执行,别忘记!!!kubectl create -f bootstrap.secret.yaml

8.node 节点配置

8.1. 在 master01 上将证书复制到 node 节点

cd /etc/kubernetes/
 
for NODE in k8s-master02 k8s-master03 k8s-node01 k8s-node02 k8s-node03 k8s-node04 k8s-node05; do ssh $NODE mkdir -p /etc/kubernetes/pki; for FILE in pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig kube-proxy.kubeconfig; do scp /etc/kubernetes/$FILE $NODE:/etc/kubernetes/${FILE}; done; done

8.2.kubelet 配置

8.2.1 所有 k8s 节点创立相干目录

mkdir -p /var/lib/kubelet /var/log/kubernetes /etc/systemd/system/kubelet.service.d /etc/kubernetes/manifests/

# 所有 k8s 节点配置 kubelet service
cat > /usr/lib/systemd/system/kubelet.service << EOF

[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=containerd.service
Requires=containerd.service

[Service]
ExecStart=/usr/local/bin/kubelet \\
    --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig  \\
    --kubeconfig=/etc/kubernetes/kubelet.kubeconfig \\
    --config=/etc/kubernetes/kubelet-conf.yml \\
    --container-runtime-endpoint=unix:///run/containerd/containerd.sock  \\
    --node-labels=node.kubernetes.io/node=
    # --feature-gates=IPv6DualStack=true
    # --container-runtime=remote
    # --runtime-request-timeout=15m
    # --cgroup-driver=systemd

[Install]
WantedBy=multi-user.target
EOF

8.2.2 所有 k8s 节点创立 kubelet 的配置文件

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

8.2.3 启动 kubelet

systemctl daemon-reload
systemctl restart kubelet
systemctl enable --now kubelet

8.2.4 查看集群

[root@k8s-master01 ~]# kubectl  get node
NAME           STATUS     ROLES    AGE   VERSION
k8s-master01   Ready    <none>   18s   v1.24.3
k8s-master02   Ready    <none>   16s   v1.24.3
k8s-master03   Ready    <none>   16s   v1.24.3
k8s-node01     Ready    <none>   14s   v1.24.3
k8s-node02     Ready    <none>   14s   v1.24.3
k8s-node03     Ready    <none>   14s   v1.24.3
k8s-node04     Ready    <none>   14s   v1.24.3
k8s-node05     Ready    <none>   14s   v1.24.3
[root@k8s-master01 ~]#

8.3.kube-proxy 配置

8.3.1 将 kubeconfig 发送至其余节点

for NODE in k8s-master02 k8s-master03; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig; done

for NODE in k8s-node01 k8s-node02 k8s-node03 k8s-node04 k8s-node05; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig;  done

8.3.2 所有 k8s 节点增加 kube-proxy 的 service 文件

cat >  /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

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

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

8.3.3 所有 k8s 节点增加 kube-proxy 的配置

cat > /etc/kubernetes/kube-proxy.yaml << EOF
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:
  acceptContentTypes: ""
  burst: 10
  contentType: application/vnd.kubernetes.protobuf
  kubeconfig: /etc/kubernetes/kube-proxy.kubeconfig
  qps: 5
clusterCIDR: 172.16.0.0/12,fc00::/48 
configSyncPeriod: 15m0s
conntrack:
  max: null
  maxPerCore: 32768
  min: 131072
  tcpCloseWaitTimeout: 1h0m0s
  tcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: ""
iptables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 0s
  syncPeriod: 30s
ipvs:
  masqueradeAll: true
  minSyncPeriod: 5s
  scheduler: "rr"
  syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: "ipvs"
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
udpIdleTimeout: 250ms

EOF

8.3.4 启动 kube-proxy

 systemctl daemon-reload
 systemctl restart kube-proxy
 systemctl enable --now kube-proxy

9. 装置 Calico

9.1 以下步骤只在 master01 操作

9.1.1 更改 calico 网段

# vim calico.yaml
vim calico-ipv6.yaml
# calico-config ConfigMap 处
    "ipam": {
        "type": "calico-ipam",
        "assign_ipv4": "true",
        "assign_ipv6": "true"
    },
    - name: IP
      value: "autodetect"

    - name: IP6
      value: "autodetect"

    - name: CALICO_IPV4POOL_CIDR
      value: "172.16.0.0/12"

    - name: CALICO_IPV6POOL_CIDR
      value: "fc00::/48"

    - name: FELIX_IPV6SUPPORT
      value: "true"

# 本地没有 IPv6 应用 calico.yaml
# kubectl apply -f calico.yaml

# 本地有 IPv6 应用 calico-ipv6.yaml 
kubectl apply -f calico-ipv6.yaml 

9.1.2 查看容器状态

# calico 初始化会很慢 须要急躁期待一下,大概十分钟左右
[root@k8s-master01 ~]# kubectl  get pod -A
NAMESPACE     NAME                                       READY   STATUS    RESTARTS   AGE
kube-system   calico-kube-controllers-56cdb7c587-bq6rn   1/1     Running   0          10m
kube-system   calico-node-2vt27                          1/1     Running   0          10m
kube-system   calico-node-7bg82                          1/1     Running   0          10m
kube-system   calico-node-gg9tv                          1/1     Running   0          10m
kube-system   calico-node-lkdhr                          1/1     Running   0          10m
kube-system   calico-node-msl6j                          1/1     Running   0          10m
kube-system   calico-node-qqrx9                          1/1     Running   0          10m
kube-system   calico-node-tgzxk                          1/1     Running   0          10m
kube-system   calico-node-z59jx                          1/1     Running   0          10m
kube-system   calico-typha-6775694657-xzmcs              1/1     Running   0          10m
[root@k8s-master01 ~]# 

10. 装置 CoreDNS

10.1 以下步骤只在 master01 操作

10.1.1 批改文件

cd coredns/
cat coredns.yaml | grep clusterIP:
  clusterIP: 10.96.0.10 

10.1.2 装置

kubectl  create -f coredns.yaml 
serviceaccount/coredns created
clusterrole.rbac.authorization.k8s.io/system:coredns created
clusterrolebinding.rbac.authorization.k8s.io/system:coredns created
configmap/coredns created
deployment.apps/coredns created
service/kube-dns created

11. 装置 Metrics Server

11.1 以下步骤只在 master01 操作

11.1.1 装置 Metrics-server

在新版的 Kubernetes 中系统资源的采集均应用 Metrics-server,能够通过 Metrics 采集节点和 Pod 的内存、磁盘、CPU 和网络的使用率

# 装置 metrics server
cd metrics-server/

kubectl  apply -f metrics-server.yaml 

11.1.2 稍等片刻查看状态

kubectl  top node
NAME           CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   
k8s-master01   154m         1%     1715Mi          21%       
k8s-master02   151m         1%     1274Mi          16%       
k8s-master03   523m         6%     1345Mi          17%       
k8s-node01     84m          1%     671Mi           8%        
k8s-node02     73m          0%     727Mi           9%        
k8s-node03     96m          1%     769Mi           9%        
k8s-node04     68m          0%     673Mi           8%        
k8s-node05     82m          1%     679Mi           8% 

12. 集群验证

12.1 部署 pod 资源

cat<<EOF | kubectl apply -f -
apiVersion: v1
kind: Pod
metadata:
  name: busybox
  namespace: default
spec:
  containers:
  - name: busybox
    image: busybox:1.28
    command:
      - sleep
      - "3600"
    imagePullPolicy: IfNotPresent
  restartPolicy: Always
EOF

# 查看
kubectl  get pod
NAME      READY   STATUS    RESTARTS   AGE
busybox   1/1     Running   0          17s

12.2 用 pod 解析默认命名空间中的 kubernetes

kubectl get svc
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   17h

kubectl exec  busybox -n default -- nslookup kubernetes
3Server:    10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local

Name:      kubernetes
Address 1: 10.96.0.1 kubernetes.default.svc.cluster.local

12.3 测试跨命名空间是否能够解析

kubectl exec  busybox -n default -- nslookup kube-dns.kube-system
Server:    10.96.0.10
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local

Name:      kube-dns.kube-system
Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local

12.4 每个节点都必须要能拜访 Kubernetes 的 kubernetes svc 443 和 kube-dns 的 service 53

telnet 10.96.0.1 443
Trying 10.96.0.1...
Connected to 10.96.0.1.
Escape character is '^]'.

 telnet 10.96.0.10 53
Trying 10.96.0.10...
Connected to 10.96.0.10.
Escape character is '^]'.

curl 10.96.0.10:53
curl: (52) Empty reply from server

12.5Pod 和 Pod 之前要能通

kubectl get po -owide
NAME      READY   STATUS    RESTARTS   AGE   IP              NODE         NOMINATED NODE   READINESS GATES
busybox   1/1     Running   0          17m   172.27.14.193   k8s-node02   <none>           <none>

 kubectl get po -n kube-system -owide
NAME                                       READY   STATUS    RESTARTS      AGE   IP               NODE           NOMINATED NODE   READINESS GATES
calico-kube-controllers-5dffd5886b-4blh6   1/1     Running   0             77m   172.25.244.193   k8s-master01   <none>           <none>
calico-node-fvbdq                          1/1     Running   1 (75m ago)   77m   192.168.1.61     k8s-master01   <none>           <none>
calico-node-g8nqd                          1/1     Running   0             77m   192.168.1.64     k8s-node01     <none>           <none>
calico-node-mdps8                          1/1     Running   0             77m   192.168.1.65     k8s-node02     <none>           <none>
calico-node-nf4nt                          1/1     Running   0             77m   192.168.1.63     k8s-master03   <none>           <none>
calico-node-sq2ml                          1/1     Running   0             77m   192.168.1.62     k8s-master02   <none>           <none>
calico-typha-8445487f56-mg6p8              1/1     Running   0             77m   192.168.1.65     k8s-node02     <none>           <none>
calico-typha-8445487f56-pxbpj              1/1     Running   0             77m   192.168.1.61     k8s-master01   <none>           <none>
calico-typha-8445487f56-tnssl              1/1     Running   0             77m   192.168.1.64     k8s-node01     <none>           <none>
coredns-5db5696c7-67h79                    1/1     Running   0             63m   172.25.92.65     k8s-master02   <none>           <none>
metrics-server-6bf7dcd649-5fhrw            1/1     Running   0             61m   172.18.195.1     k8s-master03   <none>           <none>

# 进入 busybox ping 其余节点上的 pod

kubectl exec -ti busybox -- sh
/ # ping 192.168.1.64
PING 192.168.1.64 (192.168.1.64): 56 data bytes
64 bytes from 192.168.1.64: seq=0 ttl=63 time=0.358 ms
64 bytes from 192.168.1.64: seq=1 ttl=63 time=0.668 ms
64 bytes from 192.168.1.64: seq=2 ttl=63 time=0.637 ms
64 bytes from 192.168.1.64: seq=3 ttl=63 time=0.624 ms
64 bytes from 192.168.1.64: seq=4 ttl=63 time=0.907 ms

# 能够连通证实这个 pod 是能够跨命名空间和跨主机通信的 

12.6 创立三个正本,能够看到 3 个正本散布在不同的节点上(用完能够删了)

cat > deployments.yaml << EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

EOF

kubectl  apply -f deployments.yaml 
deployment.apps/nginx-deployment created

kubectl  get pod 
NAME                               READY   STATUS    RESTARTS   AGE
busybox                            1/1     Running   0          6m25s
nginx-deployment-9456bbbf9-4bmvk   1/1     Running   0          8s
nginx-deployment-9456bbbf9-9rcdk   1/1     Running   0          8s
nginx-deployment-9456bbbf9-dqv8s   1/1     Running   0          8s

# 删除 nginx

[root@k8s-master01 ~]# kubectl delete -f deployments.yaml 

13. 装置 dashboard

wget https://raw.githubusercontent.com/cby-chen/Kubernetes/main/yaml/dashboard.yaml
wget https://raw.githubusercontent.com/cby-chen/Kubernetes/main/yaml/dashboard-user.yaml

kubectl  apply -f dashboard.yaml
kubectl  apply -f dashboard-user.yaml

13.1 更改 dashboard 的 svc 为 NodePort,如果已是请疏忽

kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
  type: NodePort

13.2 查看端口号

kubectl get svc kubernetes-dashboard -n kubernetes-dashboard
NAME                   TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)         AGE
kubernetes-dashboard   NodePort   10.108.120.110   <none>        443:30034/TCP   34s

13.3 创立 token

kubectl -n kubernetes-dashboard create token admin-user
eyJhbGciOiJSUzI1NiIsImtpZCI6Inlkd0RKV2lQeUpvNmRxb2hENDlRM3llWU55T2I4dC0wVW5KOU5PZGRSdWsifQ.eyJhdWQiOlsiaHR0cHM6Ly9rdWJlcm5ldGVzLmRlZmF1bHQuc3ZjLmNsdXN0ZXIubG9jYWwiXSwiZXhwIjoxNjU1NzA2MTQwLCJpYXQiOjE2NTU3MDI1NDAsImlzcyI6Imh0dHBzOi8va3ViZXJuZXRlcy5kZWZhdWx0LnN2Yy5jbHVzdGVyLmxvY2FsIiwia3ViZXJuZXRlcy5pbyI6eyJuYW1lc3BhY2UiOiJrdWJlcm5ldGVzLWRhc2hib2FyZCIsInNlcnZpY2VhY2NvdW50Ijp7Im5hbWUiOiJhZG1pbi11c2VyIiwidWlkIjoiZGVhYjdiY2MtNDczZS00N2E0LThlYTUtZmE4Yjc2NGY2NGJjIn19LCJuYmYiOjE2NTU3MDI1NDAsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDprdWJlcm5ldGVzLWRhc2hib2FyZDphZG1pbi11c2VyIn0.YzVrnSq3IuWn3qqY_td7SPqHisT40Gk1neMx7Ok9PsTxd6RASWxv9Y_1-T4wpE3ljaCiXxMBETzvYDgf-y9FOxm6drkQWWLk9UUuvOdjexxkdTXztB5X_0BiUGcMlvD3CA0qFbnzcg1cLpokypkuOnlSB8GBTleNyhQvHQnoXU3fSUCNRR_zHu2bRNgJZwABPMdj2D42EQndD56ZDP4g4IK8iMVJbaM-6DdNjdpfQx2358n8syPDjznu_1W1fUvwxY3eoEyeuIEjDbEeYEwh5uW2k4NOjW8m54W2YgmipDuqpvIB_-cnAo_KzF2q1Qb4WpIAItGkkpgwQFMFagKRTg

13.3 登录 dashboard

https://192.168.1.61:30034/

14.ingress 装置

14.1 执行部署

cd ingress/

kubectl  apply -f deploy.yaml 
kubectl  apply -f backend.yaml 

# 等创立实现后在执行:kubectl  apply -f ingress-demo-app.yaml 

kubectl  get ingress
NAME               CLASS   HOSTS                            ADDRESS     PORTS   AGE
ingress-host-bar   nginx   hello.chenby.cn,demo.chenby.cn   192.168.1.62   80      7s

14.2 过滤查看 ingress 端口

[root@hello ~/yaml]# kubectl  get svc -A | grep ingress
ingress-nginx          ingress-nginx-controller             NodePort    10.104.231.36    <none>        80:32636/TCP,443:30579/TCP   104s
ingress-nginx          ingress-nginx-controller-admission   ClusterIP   10.101.85.88     <none>        443/TCP                      105s
[root@hello ~/yaml]#

15.IPv6 测试

# 部署利用
[root@k8s-master01 ~]# vim cby.yaml 
[root@k8s-master01 ~]# cat cby.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: chenby
spec:
  replicas: 3
  selector:
    matchLabels:
      app: chenby
  template:
    metadata:
      labels:
        app: chenby
    spec:
      containers:
      - name: chenby
        image: nginx
        resources:
          limits:
            memory: "128Mi"
            cpu: "500m"
        ports:
        - containerPort: 80

---
apiVersion: v1
kind: Service
metadata:
  name: chenby
spec:
  ipFamilyPolicy: PreferDualStack
  ipFamilies:
  - IPv6
  - IPv4
  type: NodePort
  selector:
    app: chenby
  ports:
  - port: 80
    targetPort: 80
[root@k8s-master01 ~]# kubectl  apply -f cby.yaml

#查看端口
[root@k8s-master01 ~]# kubectl  get svc
NAME           TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
chenby         NodePort    fd00::a29c       <none>        80:30779/TCP   5s
[root@k8s-master01 ~]# 

#应用内网拜访
[root@localhost yaml]# curl -I http://[fd00::a29c]
HTTP/1.1 200 OK
Server: nginx/1.21.6
Date: Thu, 05 May 2022 10:20:35 GMT
Content-Type: text/html
Content-Length: 615
Last-Modified: Tue, 25 Jan 2022 15:03:52 GMT
Connection: keep-alive
ETag: "61f01158-267"
Accept-Ranges: bytes

[root@localhost yaml]# curl -I http://192.168.1.61:30779
HTTP/1.1 200 OK
Server: nginx/1.21.6
Date: Thu, 05 May 2022 10:20:59 GMT
Content-Type: text/html
Content-Length: 615
Last-Modified: Tue, 25 Jan 2022 15:03:52 GMT
Connection: keep-alive
ETag: "61f01158-267"
Accept-Ranges: bytes

[root@localhost yaml]# 

#应用公网拜访
[root@localhost yaml]# curl -I http://[2408:8207:78cc:5cc1:181c::10]:30779
HTTP/1.1 200 OK
Server: nginx/1.21.6
Date: Thu, 05 May 2022 10:20:54 GMT
Content-Type: text/html
Content-Length: 615
Last-Modified: Tue, 25 Jan 2022 15:03:52 GMT
Connection: keep-alive
ETag: "61f01158-267"
Accept-Ranges: bytes

16. 装置命令行主动补全性能

yum install bash-completion -y
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> ~/.bashrc

对于

https://www.oiox.cn/

https://www.oiox.cn/index.php…

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