创建PV-持久化存储
1.创建1台单独的nfs服务器,然后安装nfs服务并配置好/etc/exports文件
例如:
[root@nfs ~]# ls /volume/ 存放tomcat程序的文件目录
tomcat_yolink
[root@nfs ~]# cat /etc/exports nfs配置文件
/volume/ 172.16.0.0/24(rw,sync,all_squash)
[root@nfs ~]# systemctl status nfs nfs启动状态
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
Drop-In: /run/systemd/generator/nfs-server.service.d
└─order-with-mounts.conf
Active: active (exited) since Sat 2018-11-03 14:32:01 CST; 9h ago
Process: 13997 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
Process: 13995 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
Process: 13992 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
Process: 14019 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
Process: 14013 ExecStartPre=/bin/sh -c /bin/kill -HUP `cat /run/gssproxy.pid` (code=exited, status=0/SUCCESS)
Process: 14011 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 14019 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/nfs-server.service
Nov 03 14:32:01 nfs systemd[1]: Starting NFS server and services...
Nov 03 14:32:01 nfs systemd[1]: Started NFS server and services.
2.然后在k8s节点,如master,node节点安装nfs程序并挂载nfs服务端的内容
例如:
mount -t nfs 172.16.0.10:/volume/ /volume
以上是nfs安装成功
3.然后配置持久化存储pv.yaml文件
例如:
[root@master1 dockerfile]# cat pv.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: nfs-pv
spec:
capacity:
storage: 20Gi
volumeMode: Filesystem
accessModes:
- ReadWriteMany
persistentVolumeReclaimPolicy: Recycle
storageClassName: slow
nfs:
path: /volume
server: 172.16.0.10
[root@master1 dockerfile]# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
nfs-pv 20Gi RWX Recycle Available slow 6m
创建PVC
[root@master1 tomcat-link]# vim tomcat-deployment5.yaml
apiVersion: v1
kind: Service
metadata:
name: tomcat-nfs
labels:
app: tomcat-nfs
spec:
type: NodePort
ports:
- port: 8080
targetPort: 8080
nodePort: 30000
protocol: TCP
selector:
app: tomcat-nfs
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: tomcat-yolink
labels:
app: tomcat-nfs
spec:
replicas: 2
selector:
matchLabels:
app: tomcat-nfs
template:
metadata:
labels:
app: tomcat-nfs
annotations:
app: tomcat-clouster
spec:
containers:
- name: tomcat-nfs
image: 172.16.0.2:5000/docker.io/tomcat
imagePullPolicy: IfNotPresent
ports:
- containerPort: 8080
volumeMounts:
- name: tomcatdata
mountPath: /usr/local/tomcat/webapps/ROOT
volumes:
- name: tomcatdata
hostPath:
path: /usr/local/www.link.com
type: DirectoryOrCreate
