存储与配置 - 容器相关

#本地存储卷
>###主要用于Pod中容器之间的数据共享，或Pod与Node中的数据储存和共享（单机）

---
##emptyDir

####注意：emptyDir的生命周期和Pod完全一致，如果Pod销毁，那么存储卷也会同时销毁。

volumes:
	- name: data
	  emptyDir: {}
	=======================================
	volumes:
	- name: data
	  emptyDir:
	    medium:Memory		#基于内存，创建临时目录

---
###创建emptyDir
	#创建emptyDir的yml文件
	vim examplepodforemptydir.yml
	#内容：
	apiVersiapiVon:v1
	kind:Pod
	metadata:
	  name:examplepodforemptydir
	spec:
	  containers:
	  - name: containerforwrite
	    image: busybox
	    imagePullPolicy: IfNotPresent
	    command: ['sh','-c']
	    args: ['echo "hello world!" > /write_dir/data;sleep 3600']
	    volumeMounts:
	    - name: filedata
	      mountPath: /write_dir
	  - name: containerforread
	    image: busybox
	    imagePullPolicy: IfNotPresent
	    command: ['sh','-c']
	    args: ['cat /read_dir/data;sleep 3600']
	    volumeMounts:
	    - name: filedata
	      mountPath: /read_dir
	  volumes:
	  - name: filedata
	    emptyDir: {}
		 
---
##hostPath

####注意：作用是把主机上指定的目录映射到Pod中的容器上，存放在主机上的文件不会呗销毁，会永久保存

volumes:
	- name: data
	  hostPath:
	    path: /home/k8sadmin/test

---
###创建hostPath
	#创建hostPath的yml文件
	vim examplepodforemptydir.yml
	#内容：
	apiVersiapiVon:v1
	kind:Pod
	metadata:
	  name:examplepodforemptydir
	spec:
	  containers:
	  - name: containerforwrite
	    image: busybox
	    imagePullPolicy: IfNotPresent
	    command: ['sh','-c']
	    args: ['echo "hello world!" > /write_dir/data;sleep 3600']
	    volumeMounts:
	    - name: filedata
	      mountPath: /write_dir
	  - name: containerforread
	    image: busybox
	    imagePullPolicy: IfNotPresent
	    command: ['sh','-c']
	    args: ['cat /read_dir/data;sleep 3600']
	    volumeMounts:
	    - name: filedata
	      mountPath: /read_dir
	  volumes:
	  - name: filedata
	    hostPath:
	      path: /home/k8sadmin/test
		 
---
#网络存储卷
>###主要用于多个Pod之间或者多个Node之间的数据存储和共享

####注意：需要先安装NFS服务。[NFS服务安装与使用](http://baodoc.frp.bao-server.club:22080/project/31/264/ "NFS服务安装与使用")

volumes:
	- name: nfsdata
	  nfs:
	    path: /data/k8snfs
		server: 192.168.100.100
	
---
	#创建nfs的yml文件
	vim examplepodfornfs.yml
	#内容：
	apiVersiapiVon:v1
	kind:Pod
	metadata:
	  name:examplepodfornfs
	spec:
	  containers:
	  - name: containerfornfs
	    image: busybox
	    imagePullPolicy: IfNotPresent
	    command: ['sh','-c']
	    args: ['echo "hello world!" > /write_dir/data;sleep 3600']
	    volumeMounts:
	    - name: filedata
	      mountPath: /write_dir
	  volumes:
	  - name: filedata
	    nfs:
	      path: /data/k8snfs
		  server: 192.168.100.100