[nSLUG] Any Docker experts on this thread?

Stephen Yorke syorke at gmail.com
Wed Jul 26 09:06:23 ADT 2017


Thanks for the information Evan.

Time to start digging.  =)

On Tue, Jul 25, 2017 at 7:19 PM, Evan Lowry <lowry.e at gmail.com> wrote:

> Following 12 factor will save you loads of headache when it comes to using
> containers: https://12factor.net/
>
> If we ignore data persistence problems for a moment, typically you would
> have a docker-compose file with 2-3 services defined in this case:
> - mysql
> - nginx
> - whatever your php runner is (assuming it's like uwsgi for python, I'm
> willfully blind to PHP land)
>
> The nginx container has exposed public ports, which you connect into, the
> others just act as attached resources.
>
> If you need to run one-time migration style scripts, typically you would
> just launch a second php runner instance with the already running database
> node attached post-deployment (application should handle unconfigured state
> gracefully).
>
> If this is going to be a production setup, data persistence is a concern
> -- I did all my docker setup back in the 1.0.3 days, the data volume API
> wasn't an option (and just used RDS or flocker instead). It might be good,
> but I haven't used it personally: https://docs.
> docker.com/engine/reference/commandline/volume_create/
>
> Wordpress has been one of their docker-compose samples for quite some
> time, which may be a good reference: https://docs.
> docker.com/samples/wordpress/
>
> Hope some of that helps,
> - Evan
>
> On Tue, Jul 25, 2017 at 7:06 PM, Stephen Yorke <syorke at gmail.com> wrote:
>
>> Howdy again gang,
>>
>> Have a couple things I want to run by someone who is at least good in
>> Docker.
>>
>> I am setting up a new web infrastructure which will mainly be WordPress
>> sites but I want to do it all in Docker and have some questions and
>> possible concerns.
>>
>> 1. The MySQL/MariaDB instance
>> Should I create my DB instance on a stand-alone DB server which would
>> also run NGINX and WordPress to do the initial configurations, then using
>> Docker, mount the MySQL folder to each container?
>>
>> 2. WordPress
>> If using the above server as my 'base' for configuration, could I then
>> mount its WordPress folder as well to each Container or is there a better
>> way of doing so?
>>
>> 3. NGINX
>> I will be using the latest stable version NGINX and php-fpm, mount the
>> folders in containers as well or just setup my NGINX container, copy the
>> NGINX config files to the local host and have Docker mount said local
>> folders for the NGINX instance?
>>
>> I will be looking at Docker Swarm to setup multiple instances of the
>> websites eventually and have auto-expand and auto-deplete depending on
>> load.  I will probably have a total of 3-5 Docker nodes running possibly
>> RanchOS, CoreOS or AlpineOS as I do not need a full Debian installation to
>> be used as my Container OSes but I will be using Debian or CentOS for my
>> Database server and possibly another for a File Server for
>> sharing/mounting to the Docker nodes.
>>
>> Mainly, what I am looking for is a best practice for the above areas.  I
>> have looked online but can not find anything really for the database side
>> of things.  There is a lot of partial information but no type of guides,
>> guidelines or walk-throughs that folks have already done.  I am sure folks
>> running these types of setups have done all of the above, why is there real
>> no information on it out there?  If I get it all setup and configured, it
>> will be one of the first blog posts I publish on some site somewhere.
>>
>> Thanks in advance for any and all replies, even if it is just links to
>> documentation that I have yet to uncover.
>> -Stephen
>>
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>>
>>
>
>
> --
> Evan Lowry
> 902.403.5244 <(902)%20403-5244>
> www.exitiumonline.com | https://github.com/Lykathia
>
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>
>
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