290 lines
7.4 KiB
Markdown
290 lines
7.4 KiB
Markdown
# 环境准备
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| 角色 | 主机名 | ip地址 | 配置 |
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| :----- | -------- | --------------- | ------- |
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| master | master01 | 192.168.173.100 | 2C4G60G |
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| node01 | node01 | 192.168.173.101 | 2C2G60G |
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| node02 | node2 | 192.168.173.102 | 2C2G60G |
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# 环境初始化
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```bash
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# 网卡配置
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# cat /etc/NetworkManager/system-connections/ens160.nmconnection
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[ipv4]
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method=manual
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address1=192.168.173.100/24,192.168.173.2
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dns=114.114.114.114;114.114.115.115
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# cat /etc/NetworkManager/system-connections/ens192.nmconnection
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[connection]
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autoconnect=false
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# 调用 nmcli 重启设备和连接配置
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nmcli d d ens192
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nmcli d r ens160
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nmcli c r ens160
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```
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```bash
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# Rocky 系统软件源更换
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sed -e 's|^mirrorlist=|#mirrorlist=|g' \
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-e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.aliyun.com/rockylinux|g' \
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-i.bak \
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/etc/yum.repos.d/[Rr]ocky*.repo
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dnf makecache
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# 防火墙修改 firewalld 为 iptables
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systemctl stop firewalld
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systemctl disable firewalld
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yum -y install iptables-services
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systemctl start iptables
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iptables -F
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systemctl enable iptables
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service iptables save
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# 禁用 Selinux
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setenforce 0
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sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
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grubby --update-kernel ALL --args selinux=0
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# 查看是否禁用，grubby --info DEFAULT
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# 回滚内核层禁用操作，grubby --update-kernel ALL --remove-args selinux
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# 设置时区
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timedatectl set-timezone Asia/Shanghai
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```
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```bash
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# 关闭 swap 分区
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swapoff -a
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sed -i 's:/dev/mapper/rl-swap:#/dev/mapper/rl-swap:g' /etc/fstab
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# 修改主机名
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hostnamectl set-hostname k8s-node01
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# 安装 ipvs
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yum install -y ipvsadm
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# 开启路由转发
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echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
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sysctl -p
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# 加载 bridge
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yum install -y epel-release
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yum install -y bridge-utils
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modprobe br_netfilter
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echo 'br_netfilter' >> /etc/modules-load.d/bridge.conf
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echo 'net.bridge.bridge-nf-call-iptables=1' >> /etc/sysctl.conf
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echo 'net.bridge.bridge-nf-call-ip6tables=1' >> /etc/sysctl.conf
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sysctl -p
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```
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```bash
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# 添加 docker-ce yum 源
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# 中科大(ustc)
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sudo dnf config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
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cd /etc/yum.repos.d
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# 切换中科大源
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sed -i 's#download.docker.com#mirrors.ustc.edu.cn/docker-ce#g' docker-ce.repo
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# 安装 docker-ce
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yum -y install docker-ce
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# 配置 daemon.
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cat > /etc/docker/daemon.json <<EOF
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{
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"data-root": "/data/docker",
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"exec-opts": ["native.cgroupdriver=systemd"],
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"log-driver": "json-file",
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"log-opts": {
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"max-size": "100m",
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"max-file": "100"
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},
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"registry-mirrors": [
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"https://docker.1ms.run",
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"https://docker.1panel.live",
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"https://docker.xuanyuan.me",
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"https://dockerproxy.net",
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"https://docker.fast360.cn",
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"https://cloudlayer.icu",
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"https://docker-registry.nmqu.com",
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"https://hub.amingg.com",
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"https://docker.amingg.com",
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"https://docker.hlmirror.com"
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]
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}
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EOF
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mkdir -p /etc/systemd/system/docker.service.d
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# 重启docker服务
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systemctl daemon-reload && systemctl restart docker && systemctl enable docker
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```
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```bash
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# 安装 cri-docker
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wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.9/cri-dockerd-0.3.9.amd64.tgz
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tar -xf cri-dockerd-0.3.9.amd64.tgz
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cp cri-dockerd/cri-dockerd /usr/bin/
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chmod +x /usr/bin/cri-dockerd
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# 配置 cri-docker 服务
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cat <<"EOF" > /usr/lib/systemd/system/cri-docker.service
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[Unit]
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Description=CRI Interface for Docker Application Container Engine
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Documentation=https://docs.mirantis.com
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After=network-online.target firewalld.service docker.service
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Wants=network-online.target
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Requires=cri-docker.socket
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[Service]
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Type=notify
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ExecStart=/usr/bin/cri-dockerd --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.8
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ExecReload=/bin/kill -s HUP $MAINPID
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TimeoutSec=0
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RestartSec=2
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Restart=always
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StartLimitBurst=3
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StartLimitInterval=60s
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LimitNOFILE=infinity
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LimitNPROC=infinity
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LimitCORE=infinity
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TasksMax=infinity
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Delegate=yes
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KillMode=process
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[Install]
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WantedBy=multi-user.target
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EOF
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# 添加 cri-docker 套接字
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cat <<"EOF" > /usr/lib/systemd/system/cri-docker.socket
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[Unit]
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Description=CRI Docker Socket for the API
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PartOf=cri-docker.service
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[Socket]
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ListenStream=%t/cri-dockerd.sock
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SocketMode=0660
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SocketUser=root
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SocketGroup=docker
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[Install]
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WantedBy=sockets.target
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EOF
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# 启动 cri-docker 对应服务
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systemctl daemon-reload
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systemctl enable cri-docker
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systemctl start cri-docker
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systemctl is-active cri-docker
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```
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```bash
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# 添加 kubeadm yum 源
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cat <<EOF > /etc/yum.repos.d/kubernetes.repo
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[kubernetes]
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name=Kubernetes
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baseurl=https://pkgs.k8s.io/core:/stable:/v1.29/rpm/
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enabled=1
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gpgcheck=1
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gpgkey=https://pkgs.k8s.io/core:/stable:/v1.29/rpm/repodata/repomd.xml.key
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exclude=kubelet kubeadm kubectl cri-tools kubernetes-cni
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EOF
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# 安装 kubeadm 1.29 版本
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yum install -y kubelet-1.29.0 kubectl-1.29.0 kubeadm-1.29.0
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systemctl enable kubelet.service
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```
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```bash
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# 初始化主节点
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kubeadm init\
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--apiserver-advertise-address=192.168.173.100\
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--image-repository registry.aliyuncs.com/google_containers\
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--kubernetes-version 1.29.2\
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--service-cidr=10.10.0.0/12\
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--pod-network-cidr=10.244.0.0/16\
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--ignore-preflight-errors=all\
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--cri-socket unix:///var/run/cri-dockerd.sock
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```
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```bash
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# node 加入
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kubeadm join 192.168.173.100:6443 --token jghzcm.mz6js92jom1flry0 \
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--discovery-token-ca-cert-hash sha256:63253f3d82fa07022af61bb2ae799177d2b0b6fe8398d5273098f4288ce67793 --cri-socket unix:///var/run/cri-dockerd.sock
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# work token 过期后，重新申请
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kubeadm token create --print-join-command
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```
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# 部署网络插件
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```bash
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https://docs.tigera.io/calico/latest/getting-started/kubernetes/self-managed-onprem/onpremises#install-calico-with-kubernetes-api-datastore-more-than-50-nodes
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curl https://raw.githubusercontent.com/projectcalico/calico/v3.26.3/manifests/calico-typha.yaml -o calico.yaml
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CALICO_IPV4POOL_CIDR 指定为 pod 地址
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# 修改为 BGP 模式
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# Enable IPIP
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- name: CALICO_IPV4POOL_IPIP
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value: "Always" #改成Off
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kubectl apply -f calico-typha.yaml
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kubectl get pod -A
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```
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## 固定网卡(可选)
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```bash
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# 目标 IP 或域名可达
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- name: calico-node
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image: registry.geoway.com/calico/node:v3.19.1
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env:
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# Auto-detect the BGP IP address.
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- name: IP
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value: "autodetect"
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- name: IP_AUTODETECTION_METHOD
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value: "can-reach=www.google.com"
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kubectl set env daemonset/calico-node -n kube-system IP_AUTODETECTION_METHOD=can-reach=www.google.com
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```
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```bash
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# 匹配目标网卡
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- name: calico-node
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image: registry.geoway.com/calico/node:v3.19.1
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env:
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# Auto-detect the BGP IP address.
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- name: IP
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value: "autodetect"
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- name: IP_AUTODETECTION_METHOD
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value: "interface=eth.*"
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```
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```bash
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# 排除匹配网卡
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- name: calico-node
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image: registry.geoway.com/calico/node:v3.19.1
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env:
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# Auto-detect the BGP IP address.
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- name: IP
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value: "autodetect"
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- name: IP_AUTODETECTION_METHOD
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value: "skip-interface=eth.*"
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```
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```bash
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# CIDR
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- name: calico-node
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image: registry.geoway.com/calico/node:v3.19.1
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env:
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# Auto-detect the BGP IP address.
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- name: IP
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value: "autodetect"
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- name: IP_AUTODETECTION_METHOD
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value: "cidr=192.168.200.0/24,172.15.0.0/24"
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```
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# 修改kube-proxy 模式为 ipvs
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```bash
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# kubectl edit configmap kube-proxy -n kube-system
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mode: ipvs
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kubectl delete pod -n kube-system -l k8s-app=kube-proxy
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```
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