Gebruik dezelfde docker container voor java applicaties tijdens ontwikkelen en in de cloud
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Gebruik dezelfde Docker container voor Java applicaties tijdens ontwikkelen en in de cloud PowerPoint PPT Presentation


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Gebruik dezelfde Docker container voor Java applicaties tijdens ontwikkelen en in de cloud. Johan Janssen, Info Support. Content. Continuous delivery Docker Jenkins Questions. Continuous Delivery. Automate everything Software quality Continuous improvement Regular deployments

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Gebruik dezelfde Docker container voor Java applicaties tijdens ontwikkelen en in de cloud

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Gebruik dezelfde Docker container voor Java applicaties tijdens ontwikkelen en in de cloud

Johan Janssen, Info Support


Content

  • Continuous delivery

  • Docker

  • Jenkins

  • Questions


Continuous Delivery

  • Automate everything

  • Software quality

  • Continuous improvement

  • Regular deployments

  • Anyone can deploy


Deployment pipeline

Setup environment

Quality checks

Version control

Compile

Testing

Deployments

Etcetera

DevOps

End users


Deployment pipeline


Focus of this presentation

  • Automate environment provisioning

  • Automate application deployment


What to deliver?


Docker


Transportation issue


Transportation solution


Software issue


Software solution


Docker compatibility


Demo


Why Docker

  • To enable continuous delivery

  • Quickly provision environments

  • Run the same software local and in the cloud

  • Easy to move software

    • Better performance

    • Higher availability

    • Cheaper


Docker vs Virtual Machines

  • Disk space efficiency

  • Memory efficiency

  • Speed

  • Compatibility (run anywhere)

  • Isolation

  • Versioning

  • Internet of Things (Raspberry Pi etc.)


Docker vs provisioning tools

  • Simple general commands

  • No Domain Specific Language (DSL)

  • Configuration with operating system commands


Docker activity

  • Since March 2013

  • 8741 commits in 15 months

  • More than 460 570 contributors

  • Downloaded 2.75 13 million times

  • More than 14000 30000 Dockerized apps

  • >6500 Docker related projects on GitHub

  • More than 90 user groups

  • DockerCon (Europe)

  • Support from Google, VMWare, RackSpace, Red Hat, IBM, Microsoft etcetera


Docker on CIO TODAY


Windows will get Docker support


My first Docker container

  • Docker on Ubuntu 14.04

    apt-get install docker.io

    docker.io run -i -t ubuntu:saucy/bin/bash


Docker technology


Dockerfiles directory structure

  • Main directory

    • BuildAndRunScript.sh

    • GeneralBase

      • Dockerfile

    • Sonar

      • Dockerfile


DockerfileGeneralBase

FROM ubuntu:saucy

RUN apt-get -y install software-properties-common

RUN add-apt-repository ppa:webupd8team/java

RUN apt-get update && apt-get -y upgrade

RUN echo "oracle-java7-installer shared/accepted-oracle-license-v1-1 boolean true" | debconf-set-selections

RUN apt-get -y install oracle-java7-installer

ENV JAVA_HOME /usr/lib/jvm/java-7-oracle


Dockerfile Sonar

FROM GeneralBase

RUN apt-get install -y wget unzip

RUN wget http://dist.sonar.codehaus.org/sonarqube-4.2.zip

RUN unzip sonarqube-4.2.zip -d /opt

RUN rm sonarqube-4.2.zip

EXPOSE 9000

EXPOSE 9092

CMD ["/opt/sonarqube-4.2/bin/linux-x86-64/sonar.sh", "console", "/bin/bash"]


Build

  • Create the Dockerfiles

  • Build the containers:

    <optional>cd GeneralBase

    docker.io build -t GeneralBase .

    cd .. </optional>

    cd Sonar

    docker.io build -t Sonar .


Run

  • Start the container

    docker.io run -p 9000:9000

    –p 9092:9092 -d Sonar


List all in(active) containers

# docker.io ps –a

CONTAINER ID: ecbecf77461b

CREATED: 32 minutes ago

STATUS: Up 32 minutes

PORTS: 0.0.0.0:9000->9000/tcp, 0.0.0.0:9092->9092/tcp


Controlling containers

  • Start / stop / restart

    docker [start/stop/restart] containerid

  • Follow SystemOut and SystemErr

    docker logs -f containerid


Controlling containers

  • Show (running) containers

    dockerps –a

  • Show processes running in container

    docker top containerid

  • Show changes in the container

    docker diff containerid


Controlling containers

  • Stop all containers

    docker.io stop $(docker.io ps -a -q)

  • Remove all containers

    docker.io rm $(docker.io ps -a -q)

  • Remove all images

    docker.io rmi $(docker.io images -q)


We need lots of Docker containers


Data volumes

  • Dockerfile

    ENV JENKINS_HOME /var/JenkinsData

  • Docker commands

    docker.io run -v /var/JenkinsData –name

    JenkinsDataContainerubuntu:saucy true

    docker.io run -p 8080:8080 --volumes-from

    JenkinsDataContainer -d Jenkins


Diskspace

# docker.io images --tree

└─ 179.9 MB Tags: ubuntu:saucy

└─253.6 MB

└─741.8 MB Tags: GeneralBase:latest

└─763.6 MB Tags: AppServerBase:latest

├─763.6 MB Tags: EnvironmentP:latest

└─865.6 MB Tags: Nexus:latest

└─808.3 MB Tags: Gitblit:latest

└─901.5 MB Tags: Sonar:latest

└─805.4 MB Tags: Jenkins:latest


Execution time

real4m11.729s

user0m3.329s

sys0m10.054s


Docker overview


One ring to rule them all


Docker registry

  • Creating the Docker registry

    docker run -p 5000:5000 registry


Docker client 1 (push)

  • Modify container

  • Commit

    docker.io commit 064f

    192.168.56.31:5000/test-version-0.2

  • New containerid -> ff7e

  • Push

    docker.io push

    192.168.56.31:5000/test-version-0.2


Docker client 2 (pull)

  • Pull

    docker.io pull 192.168.56.31:5000/

    test-version-0.2

  • Run

    docker.io run -i -t ff7e /bin/bash

  • View the changed container


Updating containers


Pull update only

docker images -tree

└─153b 194.2 MB test-version-0.1:latest

docker pull 192.168.56.31:5000/test-version-0.2

ff7e: Download complete

153b: Download complete

docker images -tree

└─153b 194.2 MB test-version-0.1:latest

└─ff7e 194.2 MB test-version-0.2:latest


Docker vs Virtual Machines


Jenkins


Demo


Why Jenkins

  • Simple to use

  • Really popular

    • Used in many organizations

    • Regular updates

    • Big community creating plugins etc.

  • Most developers already use it


Example build pipeline

1

2

5

D

6

7

T

8

4

A

3

9

P


Jenkins


Backend pipeline


Frontend pipeline


Combined pipeline


Automatic versus manual deployment

Continuous deployment

Continuous delivery


Automatic versus manual


Build pipeline plugin


Publish over SSH plugin


Publish over SSH plugin


Keep it simple

“Life is really simple, but we insist on making it complicated.”

- Confucius


Build pipeline demo


Tips

  • Use a (private) Docker registry

  • Use images from the registry instead of export

  • Keep environmental settings separate

  • Use Jenkins to manage everything

  • Do not add extra functionality like OpenSSH

  • Think about topics such as security, monitoring and logging

  • Separate concerns in separate containers

  • Inherit containers


Isolation


Isolation


Isolation


Isolation


Summary


Questions

johan.janssen@infosupport.com

http://blogs.infosupport.com/author/johanj/


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