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K8S安裝及配置教程

更新時間：2025年03月28日 09:26:07 作者：qq_42799562

這篇文章主要介紹了K8S安裝及配置教程,本文給大家介紹的非常詳細,對大家的學(xué)習(xí)或工作具有一定的參考借鑒價值,需要的朋友參考下吧

一、安裝Docker

# 安裝yum-utils包（提供yum-config-manager 實用程序）并設(shè)置穩(wěn)定存儲庫
sudo yum install -y yum-utils 
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
# 安裝Docker
sudo yum install  --allowerasing docker-ce docker-ce-cli containerd.io
# 啟動Docker
sudo systemctl start docker
# 允許開機啟動Docker
sudo systemctl enable docker

二、添加Docker鏡像加速

# /etc/docker創(chuàng)建daemon.json并添加
{
    "registry-mirrors":[
          "https://f1z25q5p.mirror.aliyuncs.com",
          "https://hub-mirror.c.163.com",
          "https://reg-mirror.qiniu.com",
          "https://docker.mirrors.ustc.edu.cn"
        ],
    "exec-opts": ["native.cgroupdriver=systemd"]  
}
# 控制臺執(zhí)行
sudo systemctl daemon-reload
sudo systemctl restart docker

三、安裝 kubeadm、kubelet 和 kubectl

cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
exclude=kubelet kubeadm kubectl
EOF
# 將 SELinux 設(shè)置為 permissive 模式（相當于將其禁用）
sudo setenforce 0
sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
sudo yum install -y kubelet-1.23.8 kubeadm-1.23.8 kubectl-1.23.8 --disableexcludes=kubernetes
sudo systemctl enable --now kubelet

四、禁用swap分區(qū)

swapoff -a # 關(guān)閉swapoff
sed -ri 's/.*swap.*/#&/' /etc/fstab # 永久關(guān)閉
cat > /etc/containerd/config.toml <<EOF
[plugins."io.containerd.grpc.v1.cri"]
  systemd_cgroup = true
EOF
systemctl restart containerd

# 創(chuàng)建/etc/sysctl.d/k8s.conf文件，并添加以下內(nèi)容：
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1

# 應(yīng)用這些設(shè)置而不重啟系統(tǒng)
modprobe br_netfilter
sysctl --system

# 創(chuàng)建開機啟動服務(wù) /etc/systemd/system/ load-br_netfilter.service
[Unit]
Description=Load br_netfilter kernel module
[Service]
Type=oneshot
ExecStart=/sbin/modprobe br_netfilter
[Install]
WantedBy=multi-user.target

sudo systemctl enable load-br_netfilter.service
sudo systemctl start load-br_netfilter.service

五、初始化主節(jié)點

kubeadm init --image-repository registry.cn-hangzhou.aliyuncs.com/google_containers --kubernetes-version=v1.23.8 --v=6

六、啟動集群

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

七、子節(jié)點加入集群

kubeadm join 192.168.157.145:6443 --token gr2zor.rzccoywhm3hx2s1i \
        --discovery-token-ca-cert-hash sha256:d1583128f52c101bd9a851f4f0f789634b2463bf3f9f72987beae44248e5f966
# 創(chuàng)建新令牌
kubeadm token create --print-join-command