Docker and java, at Montréal JUG
3 likes1,606 views
The document presents a summary of a presentation by Anthony Dahanne on using Docker with Java applications, covering fundamentals, pipeline integration, and CI/CD processes. It includes practical demonstrations such as deploying Spring Boot applications in containers and utilizing Jenkins for CI/CD. The document also provides resources, vocabulary comparisons, and examples of integrating Docker with Java tools.
Docker and java, at Montréal JUG
- 1. DOCKER AND JAVA ANTHONY DAHANNE, MONTRÉAL JUG, JANUARY 28TH 2016 @anthonydahanne
- 2. Anthony Dahanne, Software Engineer @ Terracotta, a Software AG company Working on the Terracotta Management Console, and its integration in Terracotta products And strong Docker supporter :-P , trying to containerize as much as I can ! LET ME INTRODUCE MYSELF We’re hiring Software Engineers ! Contact me !
- 3. AGENDA • Docker fundamentals : quick recap • Java applications in containers • Hello world from a Java container • SpringBoot app in a container (+ Maven + IntelliJ IDEA integrations) • Java Web Applications (war) Docker pipelines • Docker cloud based CI/CD • CI/CD using on premises familiar tools (Jenkins, Nexus) • Extras • Jenkins container-based slaves • Interacting with Docker from Java with Docker Java
- 4. VMS VS CONTAINERS IT’S ALL ABOUT THE (LINUX?) KERNEL ! picture from http://www.enterprisetech.com/2014/08/18/ibm-techies-pit-docker-kvm-bare-metal/
- 5. DOCKER CONTAINERS / IMAGES : A PILE OF LAYERS A DOCKER IMAGE IS A DIFF ON TOP OF ITS PARENT picture from : https://docs.docker.com/v1.6/terms/layer/
- 6. Host OS Docker daemon Images Containers Docker CLI > docker run ubuntu bash > docker ps > docker images > etc. Docker Compose > docker-compose build > docker-compose up > docker-compose kill > etc. Volumes Kinematic REST API tcp (tls) / Unix socket Host OS Docker daemon Ima ges Conta iners Volum es
- 7. DOCKER VOCABULARY VS JAVA VOCABULARY • Repository : houses grouped artifacts • Artifact : org.ehcache:ehcache:3.0.0.m4 (+type : jar/sources/etc.) Group id VersionArtifact id
- 8. DOCKER VOCABULARY VS JAVA VOCABULARY • Registry : hosts repositories • Repositories : house collections of tagged images • Image : localhost:5000/anthony/mycoolimage:v2 DockerHub / quay.io / Registry V2 Registry location Repository name Tag
- 9. Registry @ SoftwareAG anthony/tmc Registry ubuntu anthonydahanne/terracotta anthonydahanne/petclinic latest 12.04 latest 4.3.1- oss latest 5.0 Host OS Docker CLI Docker daemon Images Host OS Docker daemon Images Docker CLI REST API tcp (tls) / Unix socket
- 10. DEMO TIME ! • Hello world from a Java container • SpringBoot app in a container (+ Maven + IntelliJ IDEA integrations)
- 11. DOCKER CLOUD BASED CI/CD PUSH THAT CODE AROUND ! EC2 Azure GCE TutumGithub DockerHub Commit & Push Trigger Automated Build Trigger Redeploy / Scale Create & Start Container
- 12. DEMO TIME ! • Petclinic cloud based CI/CD • Petclinic built (war + image) by DockerHub • Deployed by Tutum
- 13. ON PREMISES CI/CD RE USING EXISTING INFRA ! Git Repo Jenkins Commit & Push Trigger mvn job Create & Start Container Docker daemons Regular Slaves Registry Image build Push image to registry Docker daemon
- 14. DEMO TIME ! • Petclinic built (war and then image) by Jenkins • Pushed to Nexus 3 by Jenkins • Deployed to a machine running Docker by Jenkins
- 15. EXTRAS JENKINS DOCKER PLUGIN : ADD SLAVES CREATING CONTAINERS
- 16. EXTRAS INTERACTING WITH DOCKER WITH DOCKER JAVA DockerClient dockerClient = DockerClientBuilder.getInstance(dockerUrl).build(); Info info = dockerClient.infoCmd().exec(); List<Container> containers = dockerClient.listContainersCmd() .withShowAll(false) .exec(); CreateContainerResponse container = dockerClient.createContainerCmd("busybox") .withCmd("touch", "/test") .exec(); dockerClient.startContainerCmd(container.getId()).exec(); dockerClient.stopContainerCmd(container.getId()).exec(); <dependency> <groupId>com.github.docker-java</groupId> <artifactId>docker-java</artifactId> <version>2.1.2</version> </dependency> Demo at : https://github.com/anthonydahanne/montrealjug_docker_java/tree/04_spring_boot_app_docker_api
- 17. LINKS OF INTERESTS • Presentation links : http://blog.dahanne.net/2016/01/31/docker-and-java-notes-from-the-montreal-jug-presentation/ https://github.com/anthonydahanne/montrealjug_docker_java • Jenkins plugins https://wiki.jenkins-ci.org/display/JENKINS/Copy+Artifact+Plugin https://wiki.jenkins-ci.org/display/JENKINS/Support+Core+Plugin https://wiki.jenkins-ci.org/display/JENKINS/Docker+build+step+plugin https://wiki.jenkins-ci.org/display/JENKINS/CloudBees+Docker+Build+and+Publish+plugin https://updates.jenkins-ci.org/download/plugins/ • DockerHub repositories https://hub.docker.com/_/java/ https://hub.docker.com/_/jenkins/ https://hub.docker.com/_/tomcat/ https://hub.docker.com/_/maven/ https://hub.docker.com/r/anthonydahanne/terracotta-server-oss/ https://hub.docker.com/r/anthonydahanne/jenkins_with_plugins/ • Others https://wiki.eclipse.org/Linux_Tools_Project/Docker_Tooling/User_Guide https://plugins.jetbrains.com/plugin/7724 http://www.sonatype.org/nexus/2015/09/22/docker-and-nexus-3-ready-set-action/ https://github.com/docker/docker/issues/19396