03.安装手册

环境准备

角色	主机名	ip地址	配置
master	master01	192.168.173.100	2C4G60G
node01	node01	192.168.173.101	2C2G60G
node02	node2	192.168.173.102	2C2G60G

环境初始化

# 网卡配置
# cat /etc/NetworkManager/system-connections/ens160.nmconnection
[ipv4]
method=manual
address1=192.168.173.100/24,192.168.173.2
dns=114.114.114.114;114.114.115.115
# cat /etc/NetworkManager/system-connections/ens192.nmconnection
[connection]
autoconnect=false

# 调用 nmcli 重启设备和连接配置
nmcli d d ens192
nmcli d r ens160 
nmcli c r ens160

# Rocky 系统软件源更换
sed -e 's|^mirrorlist=|#mirrorlist=|g' \
    -e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.aliyun.com/rockylinux|g' \
    -i.bak \
    /etc/yum.repos.d/[Rr]ocky*.repo
    
dnf makecache
# 防火墙修改 firewalld 为 iptables
systemctl stop firewalld
systemctl disable firewalld

yum -y install iptables-services
systemctl start iptables
iptables -F
systemctl enable iptables
service iptables save
# 禁用 Selinux
setenforce 0
sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
grubby --update-kernel ALL --args selinux=0
# 查看是否禁用，grubby --info DEFAULT
# 回滚内核层禁用操作，grubby --update-kernel ALL --remove-args selinux
# 设置时区
timedatectl set-timezone Asia/Shanghai

# 关闭 swap 分区
swapoff -a
sed -i 's:/dev/mapper/rl-swap:#/dev/mapper/rl-swap:g' /etc/fstab

# 修改主机名
hostnamectl  set-hostname k8s-node01
# 安装 ipvs
yum install -y ipvsadm
# 开启路由转发
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
sysctl -p
# 加载 bridge
yum install -y epel-release
yum install -y bridge-utils

modprobe br_netfilter
echo 'br_netfilter' >> /etc/modules-load.d/bridge.conf
echo 'net.bridge.bridge-nf-call-iptables=1' >> /etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-ip6tables=1' >> /etc/sysctl.conf
sysctl -p

# 添加 docker-ce yum 源
# 中科大(ustc)
sudo dnf config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
cd /etc/yum.repos.d
# 切换中科大源
sed -i 's#download.docker.com#mirrors.ustc.edu.cn/docker-ce#g' docker-ce.repo

# 安装 docker-ce
yum -y install docker-ce

# 配置 daemon.
cat > /etc/docker/daemon.json <<EOF
{
  "data-root": "/data/docker",
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m",
    "max-file": "100"
  },
  "insecure-registries": ["iproute.cn:6443"],
  "registry-mirrors": ["https://iproute.cn:6443"]
}
EOF
mkdir -p /etc/systemd/system/docker.service.d

# 重启docker服务
systemctl daemon-reload && systemctl restart docker && systemctl enable docker

# 安装 cri-docker
wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.9/cri-dockerd-0.3.9.amd64.tgz
tar -xf cri-dockerd-0.3.9.amd64.tgz
cp cri-dockerd/cri-dockerd /usr/bin/
chmod +x /usr/bin/cri-dockerd

# 配置 cri-docker 服务
cat <<"EOF" > /usr/lib/systemd/system/cri-docker.service
[Unit]
Description=CRI Interface for Docker Application Container Engine
Documentation=https://docs.mirantis.com
After=network-online.target firewalld.service docker.service
Wants=network-online.target
Requires=cri-docker.socket
[Service]
Type=notify
ExecStart=/usr/bin/cri-dockerd --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.8
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

# 添加 cri-docker 套接字
cat <<"EOF" > /usr/lib/systemd/system/cri-docker.socket
[Unit]
Description=CRI Docker Socket for the API
PartOf=cri-docker.service
[Socket]
ListenStream=%t/cri-dockerd.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker
[Install]
WantedBy=sockets.target
EOF

# 启动 cri-docker 对应服务
systemctl daemon-reload
systemctl enable cri-docker
systemctl start cri-docker
systemctl is-active cri-docker

# 添加 kubeadm yum 源
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://pkgs.k8s.io/core:/stable:/v1.29/rpm/
enabled=1
gpgcheck=1
gpgkey=https://pkgs.k8s.io/core:/stable:/v1.29/rpm/repodata/repomd.xml.key
exclude=kubelet kubeadm kubectl cri-tools kubernetes-cni
EOF

# 安装 kubeadm 1.29 版本
yum install -y kubelet-1.29.0 kubectl-1.29.0 kubeadm-1.29.0
systemctl enable kubelet.service

# 初始化主节点
kubeadm init\
 --apiserver-advertise-address=192.168.173.100\
 --image-repository registry.aliyuncs.com/google_containers\
 --kubernetes-version 1.29.2\
 --service-cidr=10.10.0.0/12\
 --pod-network-cidr=10.244.0.0/16\
 --ignore-preflight-errors=all\
 --cri-socket unix:///var/run/cri-dockerd.sock

# node 加入
kubeadm join 192.168.173.100:6443 --token jghzcm.mz6js92jom1flry0 \
        --discovery-token-ca-cert-hash sha256:63253f3d82fa07022af61bb2ae799177d2b0b6fe8398d5273098f4288ce67793  --cri-socket unix:///var/run/cri-dockerd.sock
        
# work token 过期后，重新申请
kubeadm token create --print-join-command

部署网络插件

https://docs.tigera.io/calico/latest/getting-started/kubernetes/self-managed-onprem/onpremises#install-calico-with-kubernetes-api-datastore-more-than-50-nodes

curl https://raw.githubusercontent.com/projectcalico/calico/v3.26.3/manifests/calico-typha.yaml -o calico.yaml
	CALICO_IPV4POOL_CIDR	指定为 pod 地址
	
# 修改为 BGP 模式
# Enable IPIP
- name: CALICO_IPV4POOL_IPIP
  value: "Always"  #改成Off

kubectl apply -f calico-typha.yaml
kubectl get pod -A

固定网卡(可选)

# 目标 IP 或域名可达
        - name: calico-node
          image: registry.geoway.com/calico/node:v3.19.1
          env:
            # Auto-detect the BGP IP address.
            - name: IP
              value: "autodetect"
            - name: IP_AUTODETECTION_METHOD
              value: "can-reach=www.google.com"
kubectl set env daemonset/calico-node -n kube-system IP_AUTODETECTION_METHOD=can-reach=www.google.com

# 匹配目标网卡
- name: calico-node
  image: registry.geoway.com/calico/node:v3.19.1
  env:
    # Auto-detect the BGP IP address.
    - name: IP
      value: "autodetect"
    - name: IP_AUTODETECTION_METHOD
      value: "interface=eth.*"

# 排除匹配网卡
- name: calico-node
  image: registry.geoway.com/calico/node:v3.19.1
  env:
    # Auto-detect the BGP IP address.
    - name: IP
      value: "autodetect"
    - name: IP_AUTODETECTION_METHOD
      value: "skip-interface=eth.*"

# CIDR
- name: calico-node
  image: registry.geoway.com/calico/node:v3.19.1
  env:
    # Auto-detect the BGP IP address.
    - name: IP
      value: "autodetect"
    - name: IP_AUTODETECTION_METHOD
      value: "cidr=192.168.200.0/24,172.15.0.0/24"

修改kube-proxy 模式为 ipvs

# kubectl edit configmap kube-proxy -n kube-system
mode: ipvs

kubectl delete pod -n kube-system -l k8s-app=kube-proxy