{ "exec-opts": ["native.cgroupdriver=cgroupfs"]}
#systemctl enable docker && systemctl start docker
#/etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
#setenforce 0
# yum install -y kubelet kubeadm kubectl ebtables
# systemctl enable kubelet && systemctl start kubelet
#vim /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
原文：http://blog.51cto.com/xudate/2150601