G3 Summit 2016 - Dockerize your Grails!
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The document is a presentation by Iván López on using Docker with Grails, discussing the benefits of Docker for providing isolated application environments. It outlines Docker basics, including creating and running containers, and contrasts two approaches to using Docker with Grails: an easy way with a single container and a flexible orchestration method with multiple containers. The presentation emphasizes the productivity and control benefits for developers, while acknowledging the complexity of orchestration.
![Create image
FROM nginx:1.11.5
COPY index.html /usr/share/nginx/html/
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
Dockerfile
<h1>Hello G3Summit!</h1>
index.html](https://image.slidesharecdn.com/g3summit2016-dockerizeyourgrails-161129175559/85/G3-Summit-2016-Dockerize-your-Grails-17-320.jpg)
G3 Summit 2016 - Dockerize your Grails!
- 1. G3 Summit Dockerize your Grails! Iván López - @ilopmar
- 2. ➢ Iván López - @ilopmar ➢ Groovy & Grails developer Member of Grails team at OCI ➢ @MadridGUG coordinator http://www.madridgug.com ➢ Greach organizer (@greachconf) http://greachconf.com ➢ Speaker: SpringOne 2GX, GR8Conf, Codemotion, GeeCon, Spring IO, Greach, JavaCro, RigaDevDay,... About me...
- 3. 1. Problems
- 10. If there was another way... Please, kill me to end my pain!
- 12. 2. Docker
- 13. Basics about Docker ➢ Portable runtime for the app ➢ Run each app in its own isolated container ➢ Eliminate concerns about compatibility on different platforms ➢ Like a VM without the overhead of a VM ➢ Lightweight than a VM
- 14. Hypervisor Host OS Server VM App A Guest OS Bins/ Libs App A' Guest OS Bins/ Libs App B Guest OS Bins/ Libs Docker Host OS Server Bins/Libs Container Bins/Libs VM vs Docker A p p A A p p A' A p p B A p p B' A p p B' A p p B'
- 15. $ docker run --rm ubuntu echo “Hello G3Summit!” Hello G3Summit! Basics
- 16. $ docker run --rm java:9 java -version openjdk version "9-Debian" OpenJDK Runtime Environment (build 9-Debian+0-9b140-1) OpenJDK 64-Bit Server VM (build 9-Debian+0-9b140-1, mixed mode) $ alias java="docker run --rm java:9 java" $ java -version Basics
- 17. Create image FROM nginx:1.11.5 COPY index.html /usr/share/nginx/html/ EXPOSE 80 CMD ["nginx", "-g", "daemon off;"] Dockerfile <h1>Hello G3Summit!</h1> index.html
- 18. $ docker build -t g3summit . Sending build context to Docker daemon 3.072 kB Step 1 : FROM nginx:1.11.5 ---> 6dde4f9ae735 Step 2 : COPY index.html /usr/share/nginx/html/ ---> c1c0f4eeffe4 Removing intermediate container 08fb8441e6be Step 3 : EXPOSE 80 ---> Running in 4d6151c06c9b ---> e07151354dc9 Removing intermediate container 4d6151c06c9b Step 4 : CMD nginx -g daemon off; ---> Running in 8edd425ce757 ---> ef945069377f Removing intermediate container 8edd425ce757 Successfully built ef945069377f Create image
- 19. $ docker run --rm -p 1234:80 g3summit Running our image
- 20. $ docker run -it -p 1234:80 greach Running our image $ docker run --rm -p 1234:80 g3summit
- 22. Let’s fix the problems! ➢ Install Docker ➢ Clone the repo ➢ Run script ➢ Profit!
- 23. Our application Producer Consumer Debian 8 Java 8 RabbitMQ 3.6 Postgres 9.4Grails 3.2.3
- 24. Two options The easy way One image to rule them all
- 25. The easy way ➢ Everything installed on the same container ➢ More than one process per container (!!) ➢ Easy to maintain and use ➢ Focused only on development
- 26. Two options The flexible way Orchestration to the rescue
- 27. The flexible way ➢ Each application in different container ➢ Only one process per container ➢ More complicated to maintain ➢ More flexible and ready for other environments
- 28. 4. Demo
- 29. 5. Summary
- 30. Summary Easy to start being productive Developers have the exact environment Control the exact version of everything Orchestration is more complicated But it's more powerful Everyone is happy