基于Docker的K8s(Kubernetes)集群部署方案

hostnamectl set-hostname master
hostnamectl set-hostname node1
hostnamectl set-hostname node2

vim /etc/hosts
xxx.xxx.xxx.xxx master
xxx.xxx.xxx.xxx node1
xxx.xxx.xxx.xxx node2

setenforce 0
sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux

cat /etc/selinux/config 

# 添加 k8s 安装源
cat <<EOF > kubernetes.repo
[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
mv kubernetes.repo /etc/yum.repos.d/

# 添加 Docker 安装源
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# 安装yum utils
yum -y install yum-utils

yum install -y kubelet-1.22.4 kubectl-1.22.4 kubeadm-1.22.4 docker-ce

systemctl enable kubelet
systemctl start kubelet
systemctl enable docker
systemctl start docker

cat <<EOF > daemon.json
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "registry-mirrors": ["https://1x7wn4wn.mirror.aliyuncs.com"]
}
EOF
mv daemon.json /etc/docker/

# 重启生效
systemctl daemon-reload
systemctl restart docker

kubeadm init --image-repository=registry.aliyuncs.com/google_containers
或
kubeadm init \
--apiserver-advertise-address=172.27.97.125 \  # 注 此处为master的ip地址
--image-repository registry.aliyuncs.com/google_containers \
--kubernetes-version v1.22.4 \
--service-cidr=10.96.0.0/16 \
--pod-network-cidr=10.244.0.0/16

kubeadm join 172.27.97.125:6443 --token 2m828h.b08b8u9hfidud7x1 \
	--discovery-token-ca-cert-hash sha256:5adda6ae447e121e192e5c45de91609280eb424bb308c06f7b4159511d0b4030

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

kubeadm join 172.24.218.55:6443 --token rzpzj2.cmjaqfk5dmt9dgyx  --discovery-token-ca-cert-hash sha256:65f35ea1c2b846ffa73b0c401cb8d4817f07c7fced5e27e7ae2098bd8271fb2c 

kubectl get node

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
# 如果使用的第一步的操作就需要配置yaml文件，使用第二种的话无视此步骤
vim /etc/kubernetes/manifests/kube-controller-manager.yaml

kubectl get node

kubectl get pods -A

# k8s的一些常用命令
# 获取当前运行的进程
kubectl get pod 
# 获取更详细信息
kubectl get pod -o wide
# 查看某一个pod的详细数据
kubectl describe pod pod名
# 查看日志
kubectl logs pod名 -f
# 进入容器
kubectl exec -it pod名 -- bash

 # 先进入对应文件
 cd /run/flannel/
 # 写入文件
cat << EOF > subnet.env 
FLANNEL_NETWORK=10.244.0.0/16
FLANNEL_SUBNET=10.244.0.1/24
FLANNEL_MTU=1450
FLANNEL_IPMASQ=true
EOF

docker run -d \
--restart=unless-stopped \
--name=kuboard \
-p 80:80/tcp \
-p 10081:10081/tcp \
-e KUBOARD_ENDPOINT="http://服务器IP:80" \
-e KUBOARD_AGENT_SERVER_TCP_PORT="10081" \
-v /root/kuboard-data:/data \
eipwork/kuboard:v3