![Docker is Easy
• Dockerfile
FROM ubuntu:12.04
ENV http_proxy http://proxy.ext.ray.com:80
RUN apt-get install -y openjdk-5-jre
WORKDIR /home/cyber/work
EXPOSE 8887
CMD [ "java", "-jar", "ProcessMonitor.jar"]
• docker build –t ubuntu1204wJava5 .
• docker run –i –p80:8887 –v $PWD/somefolder:/home/cyber/work ubuntu1204wJava5](https://image.slidesharecdn.com/docker-lightning-150719211030-lva1-app6891/85/Docker-lightning-14-320.jpg)
Docker lightning
- 1. Docker or How I Learned to Stop Worrying and Love the Whale
- 2. VM Soapbox • Installing tools for every project on laptop • Works on my server • Amazon Web Services (AWS) Experience
- 3. Docker Pitch • Docker is fast • A VM without the overhead of a VM • Cheap containers to deploy applications/services • Replay and reset of image snapshots
- 5. How Docker is Like Java • Java’s promise: Write Once. Run Anywhere. • Docker has the same promise. • You configure containers exactly the way you want them: • Pick OS, add applications, expose interfaces, etc • Your server template will run exactly the same on any host that runs a Docker server.
- 6. What isn’t Docker? • Docker isn't a new technology or approach • Linux Container technology (like LXC) or chroot jails • Docker is NOT a Configuration Manager replacement (like Chef, Puppet, SaltStack, etc) • Docker is NOT a PaaS • Docker is NOT good at linking across separate servers or VMs (yet, see ambassadors) • Docker does NOT support Windows Containers
- 7. What is Docker? • Docker is great at building and sharing disk images with others through the Docker Index • Docker has a central repository of disk images (public and private) that allow you to easily run different operating systems (Ubuntu, Centos, Fedora, Gentoo, CoreOS, etc) • Docker is a great image distribution model for server templates • Docker uses a copy-on-write filesystem to keep track of filesystem diff’s which can be committed and collaborated on with other users
- 10. Install Docker https://docs.docker.com/ Debian $ sudo apt-get install docker.io Fedora $ sudo yum -y install docker-io Windows https://github.com/boot2docker Mac https://github.com/boot2docker
- 11. http://boot2docker.io/ boot2docker is a lightweight Linux distribution based on Tiny Core Linux made specifically to run Docker containers. It runs completely from RAM, weighs ~27MB and boots in ~5s (YMMV).
- 13. Docker is Easy • docker run –i –t fedora • docker run –i –t ubuntu:12.04 • docker run –d -v $PWD/clearview:$JBOSS_HOME jboss • docker run –d –v $PWD:/temp node temp/server.js • docker run -i -t -v $PWD:/temp ubuntu:13.10 awk -F"," '{print $3}' temp/test.csv
- 14. Docker is Easy • Dockerfile FROM ubuntu:12.04 ENV http_proxy http://proxy.ext.ray.com:80 RUN apt-get install -y openjdk-5-jre WORKDIR /home/cyber/work EXPOSE 8887 CMD [ "java", "-jar", "ProcessMonitor.jar"] • docker build –t ubuntu1204wJava5 . • docker run –i –p80:8887 –v $PWD/somefolder:/home/cyber/work ubuntu1204wJava5