K8S部署nginx并且使用NFS存储数据

安装NFS

在master安装NFS

systemctl start nfs-server

修改配置 /etc/exports

/data *(rw,no_root_squash,no_all_squash,sync)

目录为 /data 允许所有地址访问

验证下

[root@master nginx]# showmount -e 192.168.57.61 
Export list for 192.168.57.61:
/data *

共享可以正常访问

K8S部署nginx

新建 nginx.yaml

apiVersion: apps/v1
kind: Deployment
metadata:name: nginx-deploymentlabels:app: nginx
spec:replicas: 3selector:matchLabels:app: nginxtemplate:metadata:labels:app: nginxspec:containers:- name: nginximage: nginx:1.14.2ports:- containerPort: 80volumeMounts:- name: datamountPath: /usr/share/nginx/htmlvolumes:- name: datanfs:path: /dataserver: 192.168.57.61---
apiVersion: v1
kind: Service
metadata:name: nginx-servicelabels:app: nginx
spec:ports:- port: 9000name: nginxprotocol: TCPtargetPort: 80nodePort: 31090selector:app: nginxtype: NodePort
---
apiVersion: v1
kind: PersistentVolume
metadata:name: pv-nfs
spec:capacity:storage: 10GiaccessModes:- ReadWriteMany nfs:path: /dataserver: 192.168.57.61---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:name: pvc-nfs
spec:accessModes:- ReadWriteManyresources:requests:storage: 10Gi

在deployment 配置中

        volumeMounts:- name: datamountPath: /usr/share/nginx/htmlvolumes:- name: datanfs:path: /dataserver: 192.168.57.61

这部分代表 容器内的 /usr/share/nginx/html 目录

挂到NFS 的 /data目录

NFS服务器的地址为 192.168.57.61

在Service中

apiVersion: v1
kind: Service
metadata:name: nginx-servicelabels:app: nginx
spec:ports:- port: 9000name: nginxprotocol: TCPtargetPort: 80nodePort: 31090selector:app: nginxtype: NodePort

ports:port:9000 代表pod之间通信的端口为9000

protocol：TCP 代表只允许TCP连接

targetPort:80 代表pod内的80端口

nodePort:31090 代表映射到集群外的31090端口，刚才提到的80端口

运行

kubectl apply -f  nginx.yaml 

查看pod状态（由于我没有设置namespace 就是默认的命名空间 不用指定 -n ）

[root@master nginx]# kubectl get pod 
NAME                                READY   STATUS    RESTARTS   AGE
nginx-deployment-5d7bfd6588-6g5mn   1/1     Running   0          48m
nginx-deployment-5d7bfd6588-7sz4p   1/1     Running   0          48m
nginx-deployment-5d7bfd6588-vkbvq   1/1     Running   0          48m

测试

挂载NFS

 mount -t nfs -o rw 192.168.57.61:/data /data1

echo "11111" >> /data1/index.html 

访问：http://192.168.57.76:31090/

 

可以看到1111 已经显示在浏览器中了

index.html已经在容器内了