序号	主机IP	主机名规划
1	192.168.10.101	master
2	192.168.10.102	node1
3	192.168.10.103	node2

1.基础环境准备

跨主机免密码认证

生成秘钥对 
ssh-keygen -t rsa 
跨主机免密码认证 
ssh-copy-id root@远程主机ip地址

Swap环境配置(所有主机操作)

临时禁用 
swapoff -a 
永久禁用 
sed -i 's/.*swap.*/#&/' /etc/fstab 
内核参数调整 cat >> /etc/sysctl.d/k8s.conf << EOF 
vm.swappiness=0
EOF 
sysctl -p /etc/sysctl.d/k8s.conf

网络参数调整(所有主机操作)

配置iptables参数，使得流经网桥的流量也经过iptables/netfilter防火墙
cat >> /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF

配置生效
modprobe br_netfilter
modprobe overlay
sysctl -p /etc/sysctl.d/k8s.conf

1.2容器环境操作

注意：所有主机操作

定制软件源
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装最新版docker
yum list docker-ce --showduplicates | sort -r
yum install -y docker-ce
systemctl enable docker
systemctl start docker

docker加速配置

配置加速器文件
# cat >> /etc/docker/daemon.json <<-EOF
{
  "registry-mirrors": [
    "http://74f21445.m.daocloud.io",
    "https://registry.docker-cn.com",
    "http://hub-mirror.c.163.com",
    "https://docker.mirrors.ustc.edu.cn"
  ], 
  "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

重启docker服务
systemctl restart docker

1.3cri环境操作

注意：所有主机操作

获取软件

下载软件
mkdir /data/softs && cd /data/softs
wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.2/cri-dockerd-0.3.2.amd64.tgz

解压软件
tar xf cri-dockerd-0.3.2.amd64.tgz
mv cri-dockerd/cri-dockerd /usr/local/bin/

检查效果
cri-dockerd --version

定制配置

定制配置文件
cat > /etc/systemd/system/cri-dockerd.service<<-EOF
[Unit]
Description=CRI Interface for Docker Application Container Engine
Documentation=https://docs.mirantis.com
After=network-online.target firewalld.service docker.service
Wants=network-online.target
[Service]
Type=notify
ExecStart=/usr/local/bin/cri-dockerd --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.9
 --network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin --container-runtime-endpoint=unix:///var/run/cri-dockerd.sock --cri-dockerd-root-directory=/var/lib/dockershim --docker-endpoint=unix:///var/run/docker.sock --cri-dockerd-root-directory=/var/lib/docker
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
StartLimitBurst=3
StartLimitInterval=60s
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TasksMax=infinity
Delegate=yes
KillMode=process
[Install]
WantedBy=multi-user.target
EOF

定制配置

定制配置
cat > /etc/systemd/system/cri-dockerd.socket <<-EOF
[Unit]
Description=CRI Docker Socket for the API
PartOf=cri-docker.service

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

[Install]
WantedBy=sockets.target
EOF

设置服务开机自启动
systemctl daemon-reload
systemctl enable cri-dockerd.service
systemctl restart cri-dockerd.service

2.k8s集群初始化

软件部署

定制阿里云的关于kubernetes的软件源
# cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

更新软件源
yum makecache fast


master环境软件部署
yum install kubeadm kubectl kubelet -y

node环境软件部署
yum install kubeadm kubectl kubelet -y
systemctl enable kubelet

检查镜像文件列表
kubeadm config images list

环境初始化命令
kubeadm init --kubernetes-version=1.28.2 \
--apiserver-advertise-address=192.168.10.101 \
--image-repository registry.aliyuncs.com/google_containerss \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16 \
--ignore-preflight-errors=Swap \
--cri-socket=unix:///var/run/cri-dockerd.sock

node节点加入集群
kubeadm join 192.168.10.101:6443 --token voczem.zmsa96d358ga62i7 --discovery-token-ca-cert-hash sha256:abd6a0a9aea11bb710eac7d5791f44f5b08e161d27ad8f9d91003c047c8621c5  --cri-socket=unix:///var/run/cri-dockerd.sock

3.网络环境

网络定制
mkdir /data/kubernetes/flannel -p
cd /data/kubernetes/flannel

获取配置文件
wget https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml

#应用配置文件
kubectl apply -f kube-flannel.yml


#检查效果 
kubectl get node