Jessica Gadling is a Software Engineer at OpenDNS. She gave a talk and demo at OpenLate (http://www.meetup.com/OpenLate/) on October 21st, 2014 on why Docker was chosen as a central component in OpenDNS's internal PaaS Quadra.

2. OpenDNS

5. great idea, let’s get it in prod asap!

6. Orrrr… skip the hardware?

7. A simple little app?
Dev Stage
Dogfood?
Build?
Prod

8. Sharing Servers FTW!

9. even great ideas change

10. Docker
●●●●●

11. Fewer surprises in Prod
●●●

12. But can it scale?
$ ssh host1
host1$ docker run -dP myapp
host1$ exit
$ ssh host2
host2$ docker run -dP myapp
host2$ exit

14. Quadra Service Architecture

15. Quadra Network Architecture

16. Deploying an app in Quadra
$ docker build -t myproject/myapp
$ qq image push myproject/myapp --tags latest

17. Running your app
$ qq pool create mypool.myproject
--instances 4
--image myproject/myapp

18. Pools, Deployments, LB’s oh my
image: myapp/myproject:latest
env: FOO=bar
instance1 instance2 instance3 instance4
image: myapp/myproject:newbuild
env: FOO=baz
instance5 instance6 instance7 instance8
IP Address: 10.11.12.13
image: quara/http-lb:latest
env: BACKEND_POOL=myapp.myproject
instance1 instance2

19. Getting traffic to your app
$ qq deploy create mylb.myproject
--instances 2 --image quadra/http-lb
--env ‘{“BACKEND_POOL”:”myapp.myproject”}’
--iptype private

20. Upgrade your pool
$ qq deploy create mypool.myproject:deploy2
--instances 4 --image myproject/myapp
--tag newest_build

21. Oh, crap.
$ qq deploy update mypool.myapp:deploy2
--instances 0

22. DEMO