安装k8s
systemctl disable firewalld
systemctl stop firewalld
yum update
yum install -y etcd kubernetes
vim /etc/kubernetes/apiserver
KUBE_ADMISSION_CONTROL改为下面的值
KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,NamespaceExists,LimitRange
vi /etc/kubernetes/manifests/kube-apiserver.yaml
--service-node-port-range: 1-65535
systemctl start etcd
systemctl start docker
如果启动docker 失败，修改 /etc/sysconfig/selinux
把 selinux后面改成 disabled ， 重启机器，reboot -n 再启动docker就好了
systemctl start kube-apiserver
systemctl start kube-controller-manager
systemctl start kube-scheduler
systemctl start kubelet
systemctl start kube-proxy
kubectl create -f mytomcat-rc.yaml