docker


Posted:   |  More posts about docker virtualization

First download download pre build image :

sudo docker pull ubuntu

run pseudo tty:

sudo docker run -t -i ubuntu /bin/bash

get image of running docker:

sudo docker ps

output: ➜ ~ sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c4fbc80d8926 ubuntu:14.04 /bin/bash 3 minutes ago Up 3 minutes berserk_nobel ➜ ~ save container as your image: ============================= sudo docker commit c4fbc80d8926 myimage_name

Running our image:

sudo docker run -t -i myimage_name /bin/bash

Deploying your app and dependicies:

watch out to save container before you quit bash inside docker instance find container id and save

Diff image container:

sudo docker diff

Start docker container with name:

sudo docker run -i -t --name="IWAPPS2" iwapps /bin/bash

Commit with name :

sudo docker commit IWAPPS2 local -a "greg" -m "First image commit"

Actually, images are stored within /var/lib/docker/aufs/diff

OUP sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 95585eb7ea3c cc68531a3552 /bin/bash About a minute ago Up About a minute mad_ptolemy ➜ OUP sudo docker commit 95585eb7ea3c iwps2 -a "greg" -m "First image commit" c86eeb858bedf779105f759ca62d10ea59e01884e985e447d9ddf7f65ee32e3c ➜ OUP sudo docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE iwps2 latest c86eeb858bed 5 seconds ago 617.5 MB local latest 539a99ee88ee 22 minutes ago 348.5 MB <none> <none> d8f374aecae4 2 hours ago 348.1 MB iwapps latest 85e0ae955062 4 hours ago 348.1 MB ubuntu utopic b8d67033ed07 23 hours ago 286.6 MB ubuntu 14.10 b8d67033ed07 23 hours ago 286.6 MB ubuntu trusty 1357f421be38 23 hours ago 192.7 MB ubuntu latest 1357f421be38 23 hours ago 192.7 MB ubuntu 14.04 1357f421be38 23 hours ago 192.7 MB ubuntu 14.04.1 1357f421be38 23 hours ago 192.7 MB ubuntu 12.04 2bed76595591 23 hours ago 120.2 MB ubuntu 12.04.5 2bed76595591 23 hours ago 120.2 MB ubuntu precise 2bed76595591 23 hours ago 120.2 MB <none> <none> 96864a7d2df3 3 weeks ago 205.1 MB ubuntu 12.10 c5881f11ded9 3 months ago 172.2 MB ubuntu quantal c5881f11ded9 3 months ago 172.2 MB ubuntu raring 463ff6be4238 3 months ago 169.4 MB ubuntu 13.04 463ff6be4238 3 months ago 169.4 MB ubuntu saucy 195eb90b5349 3 months ago 184.7 MB ubuntu 13.10 195eb90b5349 3 months ago 184.7 MB ubun

pt The images are stored in /var/lib/docker/graph/<id>/layer.

Note that images are just diffs from the parent image. The parent ID is stored with the image's metadata /var/lib/docker/graph/<id>/json.

When you docker run an image. AUFS will 'merge' all layers into one usable file system.

docker inspect docker images --no-trunc=true

Running an interactive shell sudo docker run -i -t ubuntu /bin/bash

sudo baobab /var/lib/docker

docker pull ubuntu docker run -i -t ubuntu:14.04 /bin/bash sudo docker info sudo docker version sudo docker search ubuntu sudo docker pull ubuntu sudo docker images

Comments powered by Disqus