kubernetes 支持的存储详见：https://kubernetes.io/docs/concepts/storage/volumes/

本地存储

#emptyDir型 ，demo1和demo2将目录/xx挂载到物理机volume1上，而volume1是物理机随机分配的。

apiVersion: v1
kind: Pod
metadata:
  name: demo
  labels:
    purpose: demonstrate-envars
spec:
  volumes:
  - name: volume1
    emptyDir: {}
  containers:
  - name: demo1
    image: busybox
    command: ['sh','-c','sleep 5000']
    volumeMounts:
    - mountPath: /xx
      name: volume1
  - name: demo2
    image: busybox
    command: ['sh','-c','sleep 5000']
    volumeMounts:
    - mountPath: /xx
      name: volume1

#hostPath型， 将本地物理机目录 /local_dir分别挂载到demo1的/xx目录和demo2的/yy目录

apiVersion: v1
kind: Pod
metadata:
  name: demo
  labels:
    purpose: demonstrate-envars
spec:
  volumes: 
  - name: volume1
    hostPath:
      path: /local_dir
  containers: 
  - name: demo1
    image: busybox
    command: ['sh','-c','sleep 5000']
    volumeMounts: 
    - mountPath: /xx
      name: volume1 
  - name: demo2
    image: busybox
    command: ['sh','-c','sleep 5000']
    volumeMounts: 
    - mountPath: /yy
      name: volume1

网络存储

#nfs作为存储 nfs：192.168.199.101:/share
#搭建nfs服务器：https://www.jianshu.com/p/e9891e29ec6b
vim nfs.yaml

apiVersion: v1
kind: Pod
metadata:
  labels:
    run: nginx
  name: nginx
spec:
  volumes:
  - name: nfs
    nfs:
      server: 192.168.199.101
      path: "/share"
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - name: nfs
      mountPath: "/usr/share/nginx/html"

#在pod中执行 df -hT 查看挂载情况

#iscsi作为存储 iscsi ip：192.168.199.100
#创建iscsi服务器：https://www.jianshu.com/p/6a93b116ce7f
#详情参考 https://kubernetes.io/docs/concepts/storage/volumes/#iscsi
每个节点安装iscsi
yum install -y iscsi*
修改iscsi的值
vim /etc/iscsi/initiatorname.iscsi

InitiatorName=iqn.2019-04.cc.rhce:xx

#master上编辑文件
vim iscsi.yaml

apiVersion: v1
kind: Pod
metadata:
  name: iscsipd
spec:
  containers:
  - name: iscsipd-rw
    image: nginx
    volumeMounts:
    - mountPath: "/mnt/iscsipd"
      name: iscsipd-rw
  volumes:
  - name: iscsipd-rw
    iscsi:
      targetPortal: 192.168.199.100:3260
      iqn: iqn.2019-04.cc.rhce:disk
      lun: 0
      fsType: xfs
      readOnly: false


#ceph作为存储（后续单独写）