[kwlug-disc] Docker on VPSes

[Mikalai Birukou]

After lunch thoughts. Containerization allows to go beyond single 
machine. Since it is better to eat any elephant piece by piece, do step 
at a time. Split one by one chunks of your current setup into LXD or 
Docker containers.

On 2019-01-22 4:14 a.m., Paul Nijjar via kwlug-disc wrote:
> I asked a version of this question during the last Drupal meeting, so
> apologise for the rerun.
>
> I am working on migrating a LAMP application -- Drupal, as it turns
> out -- from a VPS on Linode onto a different VPS on Linode. (Yes, I
> really want to migrate to a new instance and not just upgrade the
> existing one.)
>
> It seems that Docker is the cool new thing to use for deploying
> applications. It sounds as if Docker is good for scaling things out,
> and for allowing different versions of LAMP components (different
> versions of PHP, for example) to exist on the same VPS when they are
> used by different applications. But does it make sense if you are
> sticking with a standard LAMP configuration on a standard Ubuntu
> install? It might be possible to containerize this application, but
> would it be worth the trouble? What advantages would there be?
>
> I am also confused how one keeps all of these containerized images up
> to date, and even why I should trust images that come from
> hub.docker.com . I trust Ubuntu/Debian updates because I understand
> the social infrastructure that makes them relatively trustworthy. I
> also understand that I can upgrade these components with an "apt
> upgrade". I do not know how people do this in the Docker world.
>
> Help? There are a bunch of tutorials in getting started with Docker,
> but not much about when to choose it, and under what situations it
> does/does not make sense.
>
> - Paul
>
>
-- 
Mikalai Birukou
CEO | 3NSoft Inc.