修改k8s的镜像源为国内镜像源

#由于kubernetes的镜像源在国外，速度比较慢，这里切换成国内的镜像源#编辑/etc/yum.repos.d/kubernetes.repo,添加下面的配置

kubernetes

name=Kubernetes

baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-e17-x86_64

enabled=1

gpgcheck=0

repo_gpgcheck=0

gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg

http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

#安装kubeadm、kubelet和kubect1

root@master \~# yum install --setopt=obsoletes=0 kubeadm-1.17.4-0 kubelet-1.17.4-0 kubectl.1.17.4-0 -y

#配罟kubelet的cgroup

#编辑/etc/sysconfig/kubelet，添加下面的配置

KUBELET_CGROUP_ARGS="--cgroup-driver=systemd"

KUBE_PROXY_MODE="ipvs"

#4 设置kubelet开机自启

root@master \~#systemctl enable kubelet