K8S的搭建

一。关闭防火墙和SELinux

1.1systemctl stop firewalld

1.2setenfoce 0

二。配置内核转发以及网桥过滤

2.1vi /etc/sysctl.d/k8s.conf

2.2sysctl -p /etc/sysctl.d/k8s.conf ：让文件生效

2.3modprobe br_netfilter：加载模块

三。启动ipvs：

3.1vi /etc/sysconfig/modules/ipvs.modules

3.2chmod +x /etc/sysconfig/modules/ipvs.modules

3.3bash /etc/sysconfig/modules/ipvs.modules

四。关闭swap分区

临时关闭：swapoff  -a 

永久关闭：sed -i 's/.*swap.*/#&/' /etc/fstab

五。安装docker

5.1cd /etc/yum.repos.d/

5.2wget  https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

注释：openEuler 系统在跟换源后需要将/etc/yum.repos.d/kubernetes.repo 中的$release 跟换成 8

5.3yum makecache

5.4yum install docker-ce

5.5vi /etc/docker/daemon.json

5.6systemctl restart docker

六。配置cri-dockerd

6.1wget -c http://github.com/Mirantis/cri-dockerd/releases/doenload/v0.3.4/cri-dockerd-0.3.14-3.fc36.x86_64.rpm 

6.2 yum install cri-dockerd-0.3.14-3.fc36.x86_64.rpm 

6.3vi /usr/lib/systemd/system/cri-docker.service 

6.4systemctl start cri-docker.socket cri-docker.service

6.5systemctl daemon-reload && systemctl enable cri-docker.socket && systemctl status cri-docker.socket cri-docker docker

七。master配置K8s

7.1vi /etc/yum.repo.d/kubernets.repo

7.2yum install  kubeadm-1.30.2 kubelet-1.30.2 kubectl-1.30.2 -y
如果没有此版本：yum list kubeadm --showduplicates | sort -r 进行选择合适版本

7.3kubeadm config print init-defaults > kubeadm-init.yaml：设置初始化文件

7.4vi  /var/lib/kubelet/kubeadm-init.yaml

7.5systemctl restart containerd
7.6systemctl restart kubelet

7.7kubeadm init --config=kubeadm-init.yaml --upload-certs --v=6

7.8mkdir -p $HOME/.kube
7.9sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
7.10sudo chown $(id -u):$(id -g) $HOME/.kube/config

进行检测：

八。其他节点加入master：

8.1kubeadm join 192.168.142.133:6443 --token abcdef.0123456789abcdef    --discovery-token-ca-cert-hash sha256:2401632cc943e003df8a840986f340e68b3be20acaf1fdda658049d160c580f3 --cri-socket unix:///var/run/cri-dockerd.sock

最后验证：

九。master加入网络插件：

9.1curl -O https://docs.projectcalico.org/archive/v3.27/manifests/calico.yaml

9.2vi /root/calico.yaml 

9.3kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.25.1/manifests/calico.yaml

注释：查看是否出现文件calico.yaml

9.4kubectl create -f  calico.yaml