[Szjug] Docker. Does it matter for java developer?
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The document discusses the relevance of Java development in a modern environment with a focus on Docker as an essential tool for developers and operations. It covers the fundamentals of Docker, including its installation, usage commands, and the advantages of containerization in application development. Additionally, it highlights Docker Compose for managing multiple containers and emphasizes the quick adaptability to new technologies in development workflows.
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[Szjug] Docker. Does it matter for java developer?
- 1. Does it matter for Java Dev?
- 2. ● happy father ● SA in EPAM Systems ● Java is a primary language ● hands-on-coding with Groovy, Ruby ● exploring FP with Erlang/Elixir ● passionate about agile, clean code and devops
- 3. Agenda ● what is docker? ● how to ● dev env ● demo ● summary ● q&a
- 5. Docker https://www.docker.com/ Docker - An open platform for distributed applications for devs and ops. ● Develop an app with any programming language and any toolchain ● Ship the “Dockerized” app and dependencies anywhere ● Scale, move between data centers, update with zero downtime and more
- 10. Container under the hood
- 13. Installation # apt-get update # wget -qO- https://get.docker.com/ | sh
- 14. Command Line $ docker images $ docker pull webdizz/baseimage-java8 $ docker run -d --name=java8 webdizz/baseimage-java8 $ docker ps $ docker logs java8 $ docker stop java8 $ docker start java8 $ docker top java8 $ docker build -t webdizz/baseimage-java8 .
- 15. Dockerfile FROM phusion/baseimage:0.9.12 RUN apt-get -y update && apt-get -y install software-properties-common python-software-properties && add-apt-repository ppa: webupd8team/java && apt-get clean RUN apt-get -y update && echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && apt-get -y install oracle- java8-installer && apt-get clean && update-alternatives --display java ENV JAVA_HOME /usr/lib/jvm/java-8-oracle 1 3 4 5
- 16. Docker Hub ● User accounts and Authentication ● Public namespaces ● Automated builds ● Registry for images with checksums ● Meta-data store (comments, stars, list public repositories)
- 17. Official images
- 18. Official images for Java
- 19. Official images for Java... ● Clojure ● Tomcat ● Maven ● Glassfish ● Elasticsearch ● Jenkins ● SonarQube ● And more non-official
- 20. Dev Env
- 21. Perfect together
- 23. Docker-compose is our way ● YAML syntax ● Configuration inclusion/inheritance ● Comprehensive CLI ● Bash completion
- 24. Docker-compose YAML ● image ● command ● links ● ports/expose ● volumes ● environment ● ...
- 25. Docker-compose CLI ● build ● up ● logs ● ps ● run ● start/stop ● scale
- 26. Demo Time
- 27. Summary ● Easy and fast building of images ● Easy to share in your team ● Easy to scale ● Easy to work with new technologies ● Of course learning curve ● Production like dev env*
- 28. ● http://docs.docker.com/ ● https://docs.docker.com/release-notes/ ● https://hub.docker.com/ ● https://github.com/webdizz/web-scale-perf-testing References
- 29. Q&A