kubernetes快速使用案例

1.关闭CentOS防火墙

systemctl disable firewalld

systemctl stop firewalld

2.安装etcd和kubernetes软件

yum install -y etcd kubernetes

3.启动服务

systemctl start etcd

systemctl start docker

systemctl start kube-apiserver

systemctl start kube-controller-manager

systemctl start kube-scheduler

systemctl start kubelet

systemctl start kube-proxy

如果docker启动失败，请参考(vi /etc/sysconfig/selinux 把selinux后面的改为disabled，重启一波机器，再重启docker就可以了)

4.部署Tomcat案例:

a.编写mytomcat.rc.yaml

apiVersion: v1
kind: ReplicationController
metadata:
name: mytomcat
spec:
replicas: 2
selector:
app: mytomcat
template:
metadata:
labels:
app: mytomcat
spec:
containers:
- name: mytomcat
image: tomcat:7-jre7
ports:
- containerPort: 8080

创建RC(ReplicationController):kubectl create -f mytomcat.rc.yaml

b.编写mytomcat.svc.yaml

apiVersion: v1
kind: Service
metadata:
name: mytomcat
spec:
type: NodePort
ports:
- port: 8080
nodePort: 30001
selector:
app: mytomcat

创建服务(Service):kubectl create -f mytomcat.svc.yaml

rc和service配置也可以直接放在同一个yaml中