使用同一個volume 在多個docker 上

docker volume 應用

多container 間共享資料

https://docs.docker.com/storage/volumes/#share-data-among-machines

環境

Hostname	IP	SSH Username	SSH Password
docker-host1	192.168.200.10	vagrant	vagrant
docker-host2	192.168.200.11	vagrant	vagrant
docker-host3	192.168.200.12	vagrant	vagrant

安装plugin

其中兩台機器安裝plugin

[vagrant@docker-host1 ~]$ docker plugin install --grant-all-permissions vieux/sshfs
latest: Pulling from vieux/sshfs
Digest: sha256:1d3c3e42c12138da5ef7873b97f7f32cf99fb6edde75fa4f0bcf9ed277855811
52d435ada6a4: Complete
Installed plugin vieux/sshfs

[vagrant@docker-host2 ~]$ docker plugin install --grant-all-permissions vieux/sshfs
latest: Pulling from vieux/sshfs
Digest: sha256:1d3c3e42c12138da5ef7873b97f7f32cf99fb6edde75fa4f0bcf9ed277855811
52d435ada6a4: Complete
Installed plugin vieux/sshfs

建立volume

• 在第三台建立volume

  [vagrant@docker-host1 ~]$ docker volume create --driver vieux/sshfs \
                            -o sshcmd=vagrant@192.168.200.12:/home/vagrant \
                            -o password=vagrant \
                            sshvolume

• 查看

  [vagrant@docker-host1 ~]$ docker volume ls
  DRIVER               VOLUME NAME
  vieux/sshfs:latest   sshvolume
  [vagrant@docker-host1 ~]$ docker volume inspect sshvolume
  [
      {
          "CreatedAt": "0001-01-01T00:00:00Z",
          "Driver": "vieux/sshfs:latest",
          "Labels": {},
          "Mountpoint": "/mnt/volumes/f59e848643f73d73a21b881486d55b33",
          "Name": "sshvolume",
          "Options": {
              "password": "vagrant",
              "sshcmd": "vagrant@192.168.200.12:/home/vagrant"
          },
          "Scope": "local"
      }
  ]

建立container 並掛載volume

[vagrant@docker-host1 ~]$ docker run -it -v sshvolume:/app busybox sh
Unable to find image 'busybox:latest' locally
latest: Pulling from library/busybox
b71f96345d44: Pull complete
Digest: sha256:930490f97e5b921535c153e0e7110d251134cc4b72bbb8133c6a5065cc68580d
Status: Downloaded newer image for busybox:latest
/ #
/ # ls
app   bin   dev   etc   home  proc  root  sys   tmp   usr   var
/ # cd /app
/app # ls
/app # echo "this is ssh volume"> test.txt
/app # ls
test.txt
/app # more test.txt
this is ssh volume
/app #
/app #

在host 3 可看到

[vagrant@docker-host3 ~]$ pwd
/home/vagrant
[vagrant@docker-host3 ~]$ ls
test.txt
[vagrant@docker-host3 ~]$ more test.txt
this is ssh volume