实验

三台一起

systemctl stop firewalld

systemctl disable firewalld

setenforce 0

swapoff -a

vim /etc/hosts

192.168.10.40 master

192.168.10.60 node1

192.168.10.70 node2

hostnamectl set-hostname （改主机名）

桥接的 IPv4 流量传递到 iptables 的链

modprobe overlay

modprobe br_netfilter

vim /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

sysctl --system

安装Docker

yum install -y yum-utils device-mapper-persistent-data lvm2

sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum install docker-ce docker-ce-cli containerd.io

systemctl start docker

systemctl enable docker

配置 Docker

设置驱动

vim /etc/docker/daemon.json

{

 "exec-opts": ["native.cgroupdriver=systemd"]

}

systemctl daemon-reload

systemctl restart docker

安装 Kubeadm 工具

配置 yum 源

vim /etc/yum.repos.d/kubernetes.repo

[kubernetes]

name=Kubernetes

baseurl=kubernetes-yum-repos-kubernetes-el7-x86_64安装包下载_开源镜像站-阿里云

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

安装 Kubeadm 工具

yum install -y kubelet-1.23.0 kubeadm-1.23.0 kubectl-1.23.0

systemctl enable kubelet

systemctl start kubelet

mkdir k8s

cd k8s

导入镜像

托包 kubernetes_images_1.23.tar.gz

docker load -i kubernetes_images_1.23.tar.gz

在Master节点上

初始化Mster节点

kubeadm init --apiserver-advertise-address=192.168.10.30 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.23.0 --service-cidr=10.1.0.0/16 --pod-network-cidr=10.244.0.0/16

没成功就用 kubeadm reset 初始化在重复上一步操作

配置 Master 节点

mkdir -p $HOME/.kube

sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

sudo chown $(id -u):$(id -g) $HOME/.kube/config

在后两个node节点上

操作在Master上提示的命令

kubeadm join 192.168.10.30:6443 --token ........(具体的Master上提示的有)

在Mster节点上

托文件 kube-flannel.yaml

kubectl apply -f kube-flannel.yaml

kubectl get node

kubectl get cs