install docker on Ubuntu 14.04 running within virtualbox

Here are trial and error logs when installing docker on Ubuntu 14.04 which is running within virtualbox as a virtual machine.

I used vagrant to prepare VMs for docker testing environment.

I already downloaded some boxes in my machine and used trusty64(virtualbox).

$ vagrant box list centos60      (virtualbox, 0) coreos-alpha  (virtualbox, 752.1.0) coreos-stable (virtualbox, 717.3.0) trusty64      (libvirt, 0) trusty64      (virtualbox, 0)

initialize a new vagrant environment for docker testing environment.

$ vagrant init trusty64

Here is a Vagrantfile.

I prepared two VMs for a clustering test( I will evaluate that later)  and each VM has three vNICs.

$ cat Vagrantfile Vagrant.configure(2) do |config|  config.vm.box = "trusty64"  config.vm.provider "virtualbox" do |v|    v.memory = 2048    v.cpus = 1  end  config.vm.define :ubuntu01 do |ubuntu01|    ubuntu01.vm.hostname = "ubuntu01"    ubuntu01.vm.network :private_network, ip: "192.168.33.10"    ubuntu01.vm.network :private_network, ip: "192.168.34.10"    ubuntu01.vm.network :private_network, ip: "192.168.35.10"  end  config.vm.define :ubuntu02 do |ubuntu02|    ubuntu02.vm.hostname = "ubuntu02"    ubuntu02.vm.network :private_network, ip: "192.168.33.20"    ubuntu02.vm.network :private_network, ip: "192.168.34.20"    ubuntu02.vm.network :private_network, ip: "192.168.35.20"  end end

start the VMs

$ vagrant up $ vagrant status Current machine states: ubuntu01                  running (virtualbox) ubuntu02                  running (virtualbox)

access to the “ubuntu01” VM

$ vagrant ssh ubuntu01 vagrant@ubuntu01:~$ ifconfig -a | grep 192          inet addr:192.168.33.10  Bcast:192.168.33.255  Mask:255.255.255.0          inet addr:192.168.34.10  Bcast:192.168.34.255  Mask:255.255.255.0          inet addr:192.168.35.10  Bcast:192.168.35.255  Mask:255.255.255.0

install docker within this virtual machine(ubuntu01).

vagrant@ubuntu01:~$ sudo apt-get update vagrant@ubuntu01:~$ sudo apt-get install docker.io vagrant@ubuntu01:~$ docker --version Docker version 1.0.1, build 990021a

docker.io is a symbolic link file of docker.

Googling docker installation tutorials, it seems that we need to create a symbolic link manually, however, in my case, I do not need to do that.

The symbolic link was created automatically.

vagrant@ubuntu01:~$ ls -l /usr/bin/docker* -rwxr-xr-x 1 root root 15240483 Aug 21  2014 /usr/bin/docker lrwxrwxrwx 1 root root        6 Aug 21  2014 /usr/bin/docker.io -> docker

confirm docker is running as a background process.

vagrant@ubuntu01:~$ sudo service docker.io status docker.io start/running, process 26735

start docker.io when a server boots up.

vagrant@ubuntu01:~$ sudo update-rc.d docker.io defaults

download a docker container

vagrant@ubuntu01:~$ sudo docker pull ubuntu

run a docker container.

vagrant@ubuntu01:~$ sudo docker run -i -t ubuntu /bin/bash root@84bf7f3be749:/#

open another terminal

list containers running.

vagrant@ubuntu01:~$ sudo docker ps CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS               NAMES 84bf7f3be749        ubuntu:14.04        /bin/bash           About a minute ago   Up About a minute                       furious_curie        vagrant@ubuntu01:~$

stop the container

vagrant@ubuntu01:~$ sudo docker stop 84bf7f3be749 84bf7f3be749

vagrant@ubuntu01:~$ sudo docker ps CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES vagrant@ubuntu01:~$

Reference

http://www.liquidweb.com/kb/how-to-install-docker-on-ubuntu-14-04-lts/