Docker, Openstack, testing followup
Last week I wrote about an issue I was having with Docker and running mysql (among other things):
>The issue I'm on right now is that mysql-server won't start. I tried starting (and restarting) it manually in my Dockerfile with RUN service mysql start after mysql is installed but always get a policy-rc.d error.
What I finally learned (after some research and some helpful folks in the #docker IRC) is that Docker is really designed to run a single process in a limited jail-like environment. It's not a virtual machine, which is why containers are smaller and way faster to start.
If you need to run an app with access to a variety of processes, it seems that current best practice is to boot multiple docker containers running the various services, and use docker container linking to have the services talk to each other.
As for my particular use case, I decided that I did not need a complete Openstack install in order to run my unit tests. I stripped back my provisioning script to only install the base debian packages and the Openstack Dashboard packages, which installs the dashboard unit testing frameworks and mock data that my tests depend on. I can then run my tests and pull out the results for processing.
@davewiner wait, you have a blog?! :-P
@Coverville such a great album. My fav of theirs.
@lchen @tbmcmullen next time disaster strikes "at least you didn't get downgraded from a 787."
RT @iamdevloper: Wipe a developer's memory and show them code they just wrote, and they would say it's the worst code they've ever seen.
ok, is the @atpfm theme song available on the iTunes store or something? Cause I’d listen the hell out of that song.
@mattgemmell That's really awesome. Proud of you man.
@cameronmoll @imathis @allanbranch if that were a restaurant's entire menu I'd eat there.
@Coverville <djimon>Whoo?</djimon>
None#REM's New Adventures in Hi Fi is criminally underrated. /cc @remhq
@lmorchard I had to quit cold-turkey a couple of months ago. Hugely awesome game. If I ever get back in ill look you up.
@wilw I need you cool. Are you cool #photoshopwilwheaton http://t.co/PrfbFHSwK3
learning about construction materials estimating. i have brain hurt.
Anyone remember Too Much Coffee Man? /shakes/
RT @rstevens: You go into the battle with the coffee you have, not the coffee you need.
My son: "get it? It's a Marble Super Hero!" http://t.co/E7kKvokwoZ
Finally watched the last season if Warehouse 13. Man that's how you end a show #warehouse13
RT @kellan: Are home screens still a thing? I navigate the phone via notifications and search