Docker and VirtualBox(2)Set up Docker on VMs

小木木

Docker and VirtualBox(2)Set up Docker on VMs

1 Set up Shared Disk
I have a ubuntu-master, ubuntu-dev1, ubuntu-dev2 and all of them will share a disk named share1.
> VBoxManage modifymedium --type shareable share1.vdi

Init the disk in VM
> sudo fdisk /dev/sdb

>m >n >p >1 finally >w

> sudo fdisk -l

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048    41943039    20970496   83  Linux

Create directory
> sudo mkdir /mnt/share1

Mount the disk
> sudo mount -t auto /dev/sdb1 /mnt/share1

mount: you must specify the filesystem type

Solution:
It seems wrong to me, Device Boot Type.

Format that to ext3
> sudo mkfs -t ext3 /dev/sdb1

Set up Auto Amount
> ls -l /dev/disk/by-uuid

3d75cf25-76cb-4ddb-a74d-be1449aa78ee -> ../../sdb1

> sudo vi /etc/fstab

UUID=3d75cf25-76cb-4ddb-a74d-be1449aa78ee /mnt/share1        auto  defaults 0 0

> sudo mount -a

> df -hl
Filesystem      Size  Used Avail Use% Mounted on
udev            1.9G  4.0K  1.9G   1% /dev
tmpfs           386M  492K  386M   1% /run
/dev/sda1        75G  2.2G   69G   4% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
none            5.0M     0  5.0M   0% /run/lock
none            1.9G     0  1.9G   0% /run/shm
none            100M     0  100M   0% /run/user
/dev/sdb1        20G   45M   19G   1% /mnt/share1

Do the same things on all 3 machines.

2 Set up Docker Configuration
> sudo curl -sSL https://get.docker.com/ | sh

> sudo usermod -aG docker carl

Create directory and change Docker Config
> sudo mkdir /mnt/share1/docker

> sudo vi /etc/default/docker

DOCKER_OPTS="-g /mnt/share1/docker"

Restart the server and check
> sudo service docker restart

We can check the docker info and df -hl check the file system.

It works pretty well on ubuntu VM.

References:
http://sillycat.iyunv.com/blog/2263719

http://sillycat.iyunv.com/blog/2254550