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Docker without Docker

chimeracoder.github.io

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Re: Docker without Docker

#91

Post by rogerbinns »

blubbers wrote: post #81
rogerbinns wrote: post #63

Earlier quoted context omitted.

Note that in the Grub boot menu you can also choose whether Ubuntu 15.04 boots with upstart or systemd. Both are functional. Thankfully that saved me when systemd couldn't grasp the concept of a btrfs volume being spread over two disks (raid 0).

really? i have that exact setup except with three striped disks, it works fine

Gory details are at https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/14478...

It actually mounts root correctly, but them fails to mount home which has exactly the same details except a different subvol parameter.

Re: Docker without Docker

#92

Post by monochromatic »

coldtea wrote: post #82
monochromatic wrote: post #37

Earlier quoted context omitted.

Ha, it didn't occur to me to use the keyboard.

What I find incredible is that the same exchange takes place on HN every single time a web slideshow is posted... Isn't trying the arrow keys / keyboard navigation an instictive thing to do?

> Isn't trying the arrow keys / keyboard navigation an instictive thing to do?

Evidently not. My position is that a web page that is impossible to navigate via mouse is broken.

Re: Docker without Docker

#93

Post by seiferteric »

cpitman wrote: post #80
seiferteric wrote: post #51

Somewhat unrelated. Is there a way to ship a container image with just a "diff" of the default image. Say I build a container with ubuntu 14.04 + some packages installed with apt. I would like to be able to "export" the filesystem, but only the files that are not present in the base os image. The reason I would like this is that I would like to use docker (or systemd-nspawn) to run containers on an device that will n…

As long as you are pulling images from a docker registry, this should automatically happen.

Ya the point is it won't have access to a registry. I would like to be able to ship docker "packages" that have everything they need, but not have a lot of duplicate data (the base os image) in each package. I should be able to have the base image as its own package for example, and the other packages just have the "diff" files that they need.

Re: Docker without Docker

#94

Post by TheDong »

seiferteric wrote: post #51

Somewhat unrelated. Is there a way to ship a container image with just a "diff" of the default image. Say I build a container with ubuntu 14.04 + some packages installed with apt. I would like to be able to "export" the filesystem, but only the files that are not present in the base os image. The reason I would like this is that I would like to use docker (or systemd-nspawn) to run containers on an device that will n…

You can hack this up yourself using the output from 'docker save'. 'save' produces a tarball which contains layers, and you can delete the layers from your 'save' tarball that you know you already have on the destination.

Re: Docker without Docker

#95

Post by Apofis »

dorfsmay wrote: post #73
webwanderings wrote: post #21

Earlier quoted context omitted.

Off topic: how do I create slides like this? What did you use to create 'em?

An alternative to this system that I have been enjoying using is slidy, it makes slick presentation: http://www.w3.org/Talks/Tools/Slidy2/

No scroll wheel support? F that.

Re: Docker without Docker

#97

Post by rodgerd »

ekimekim wrote: post #77
mmgutz wrote: post #28

I haven't used Docker myself. So what value add does Docker provide?

* Ease of use * Publicly available image registry * Dockerfiles I should stress that last point - I dislike certain aspects of docker, but I love their system for building images. I want to somehow adapt it for building bare metal images.

> * Publicly available image registry

I am unconvinced downloading system images from the Internet is a great thing overall.

Re: Docker without Docker

#98

Post by ekimekim »

rodgerd wrote: post #97
ekimekim wrote: post #77

Earlier quoted context omitted.

* Ease of use * Publicly available image registry * Dockerfiles I should stress that last point - I dislike certain aspects of docker, but I love their system for building images. I want to somehow adapt it for building bare metal images.

> * Publicly available image registry I am unconvinced downloading system images from the Internet is a great thing overall.

I somewhat agree, but it's a thing that many people see as a feature.

Re: Docker without Docker

#99

Post by istvan__ »

rogerbinns wrote: post #63
baghira wrote: post #46

Earlier quoted context omitted.

1. Upstart is not a fork of systemd, and was started a fair amount of time before systemd. 2. Ubuntu 15.04 just shipped with systemd as the default init system (although installing "upstart-sysv" the system should revert to using upstart).

Note that in the Grub boot menu you can also choose whether Ubuntu 15.04 boots with upstart or systemd. Both are functional. Thankfully that saved me when systemd couldn't grasp the concept of a btrfs volume being spread over two disks (raid 0).

This is exactly my problem with systemd. It exposes new problems and issues while does not provide the same functionality that software it is replacing.

Re: Docker without Docker

#100

Post by digi_owl »

rogerbinns wrote: post #91
blubbers wrote: post #81

Earlier quoted context omitted.

really? i have that exact setup except with three striped disks, it works fine

Gory details are at https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/14478... It actually mounts root correctly, but them fails to mount home which has exactly the same details except a different subvol parameter.

Systemd seems to have ongoing problems with mounting...
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