Deis, a PaaS built with Docker, Docker Meetup Sao Paulo #3 @Wayra
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This document summarizes a meetup about a PaaS built with Docker. It discusses the core components used including Ceph, Etcd, Fleet and Flannel. It provides examples of using the Deis PaaS CLI to deploy and manage applications similarly to Heroku including creating an app, pushing code, scaling, configuring, running one-off commands and viewing logs. The Deis PaaS aims to provide a simpler deployment experience for Docker applications compared to directly using Docker.
![● Fleet
Distributed
“Services”
[Unit]
Description=deis-controller
Requires=deis-store-volume.service
After=deis-store-volume.service
[Service]
EnvironmentFile=/etc/environment
TimeoutStartSec=20m
ExecStartPre=/bin/sh -c "IMAGE=`/run/deis/bin/get_image /deis/controller` &&
docker history $IMAGE >/dev/null || docker pull $IMAGE"
ExecStartPre=/bin/sh -c "docker inspect deis-controller >/dev/null && docker rm -f
deis-controller || true"
ExecStart=/bin/sh -c "IMAGE=`/run/deis/bin/get_image /deis/controller` && docker
run --name deis-controller --rm -p 8000:8000 -e EXTERNAL_PORT=8000 -e
HOST=$COREOS_PRIVATE_IPV4 -v /var/run/fleet.sock:/var/run/fleet.sock -v
/var/lib/deis/store:/data $IMAGE"
ExecStopPost=-/usr/bin/docker rm -f deis-controller
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target](https://image.slidesharecdn.com/deis-dockermetup-141118215555-conversion-gate02/85/Deis-a-PaaS-built-with-Docker-Docker-Meetup-Sao-Paulo-3-Wayra-10-320.jpg)
Deis, a PaaS built with Docker, Docker Meetup Sao Paulo #3 @Wayra
- 1. A PaaS built with Docker Meetup #3 @Wayra 18/Nov/2014
- 3. Strong Philosophy: Shipping (Portability) flickr. com/wallyonwater54
- 4. Strong Philosophy: Distribution Grabthar flickr.com/42311564@N00/
- 5. Strong Philosophy: Scalability Samuel Mann flickr.com/21218849@N03/
- 6. Strong Philosophy: Twelve Factor flickr.com/hannahtakespictures
- 7. ● Rados Gateway ○ REST Objects (S3 e Swift) ● RBD ○ Block Storage ● CephFS ○ POSIX Sharing
- 8. Confd Confd Confd Confd Confd Etcd Fleet Systemd Systemd Systemd Systemd Systemd Flannel eth0 eth0 eth0 eth0 eth0 Node 1 Node 2 Node 3 Node 4 Node 5
- 9. Fleet
- 10. ● Fleet Distributed “Services” [Unit] Description=deis-controller Requires=deis-store-volume.service After=deis-store-volume.service [Service] EnvironmentFile=/etc/environment TimeoutStartSec=20m ExecStartPre=/bin/sh -c "IMAGE=`/run/deis/bin/get_image /deis/controller` && docker history $IMAGE >/dev/null || docker pull $IMAGE" ExecStartPre=/bin/sh -c "docker inspect deis-controller >/dev/null && docker rm -f deis-controller || true" ExecStart=/bin/sh -c "IMAGE=`/run/deis/bin/get_image /deis/controller` && docker run --name deis-controller --rm -p 8000:8000 -e EXTERNAL_PORT=8000 -e HOST=$COREOS_PRIVATE_IPV4 -v /var/run/fleet.sock:/var/run/fleet.sock -v /var/lib/deis/store:/data $IMAGE" ExecStopPost=-/usr/bin/docker rm -f deis-controller Restart=on-failure RestartSec=5 [Install] WantedBy=multi-user.target
- 11. WWHD (What Would Heroku Do) ● Limitations
- 12. $ deisctl config platform set domain=mylocalpaas.com $ deisctl install platform $ deisctl start platform ● Installation
- 13. $ pip install deis $ deis register http://mylocalpaas.com $ deis keys:add ● Install client
- 14. ● Simpler deploy $ mkdir myapp ; cd myapp $ deis create myapp $ deis pull rochacon/ifconfigme Creating build... done, v2 $ curl myapp.mylocalpaas.com 192.168.20.219
- 15. ● Docker deploy Instead of “docker build” # create the app $ deis create myapp # push it $ git push deis master -----> Building Docker image -----> Pushing image to private registry -----> Launching... done, myapp:v1 deployed to Deis http://myapp.mylocalpaas.com # use it $ curl http://myapp.mylocalpaas.com Hello
- 16. ● Scale it $ deis scale cmd=5 Scaling processes... but first, coffee! ..o done in 25s === myapp Processes --- cmd: cmd.1 up (v13) cmd.2 up (v13) cmd.3 up (v13) cmd.4 up (v13) cmd.5 up (v13)
- 18. ● Heroku App Available Buildpacks: ● Ruby ● Nodejs ● Java ● Gradle ● Grails ● Play ● Python ● Clojure ● PHP ● Go ● Meteorite ● Perl ● Scala ● Dart ● Nginx ● Apache
- 19. ● using deis deis config
- 20. ● using deis deis run ( runs in an ephemeral container!)
- 21. ● using deis deis limits
- 22. ● using deis deis releases / deis rollbacks
- 23. ● using deis deis logs
- 24. ● using deis deis domains
- 25. Thanks! lorieri @againstty0 ft. @rochacon flickr.com/time-to-look