centos7搭建k8s单机集群

1、安装前
禁用swap分区：

sudo swapoff -a

编写配置：

vim /etc/sysctl.d/k8s.conf

net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1    
vm.swappiness=0

sysctl --system

2、配置k8s yum源

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

[kubernetes]
name=kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgcheck=0
enable=1

yum clean all

yum makecache

3、安装docker

cd /etc/yum.repos.d/
wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum clean all
yum makecache
yum install docker-ce

yum源安装不成功的可以参考博客进行docker的离线安装：centos 7.5离线安装Docker

3、安装kubernetes-cni

yum install kubernetes-cni

4、安装kubeadm, kubelet and kubectl

yum install  kubelet-1.11.1 kubeadm-1.11.1  kubectl-1.11.1
systemctl enable docker
systemctl enable kubelet.service
systemctl start docker
systemctl start kubelet