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![Building Docker images
FROM ubuntu
MAINTAINER James Turnbull "james@example.com"
RUN apt-get -qqy update
RUN apt-get install -qqy apache2
ADD index.html /var/www/
ENV APACHE_RUN_USER www-data
ENV APACHE_RUN_GROUP www-data
ENV APACHE_LOG_DIR /var/log/apache2
EXPOSE 80
ENTRYPOINT ["/usr/sbin/apache2"]
CMD ["-D", "FOREGROUND"]](https://image.slidesharecdn.com/usingdockerwithpuppet-jamesturnbullkickstarter-140925195603-phpapp01/75/Using-Docker-with-Puppet-PuppetConf-2014-16-2048.jpg)
![Librarian Puppet
FROM ubuntu:14.04
MAINTAINER James Turnbull "james@example.com"
RUN apt-get -y -q install wget git-core rubygems
RUN gem install --no-ri --no-rdoc puppet librarian-puppet
ADD Puppetfile /
RUN librarian-puppet install
RUN puppet apply --modulepath=/modules -e "class { 'nginx': }"
RUN echo "daemon off;" >> /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx"]](https://image.slidesharecdn.com/usingdockerwithpuppet-jamesturnbullkickstarter-140925195603-phpapp01/75/Using-Docker-with-Puppet-PuppetConf-2014-40-2048.jpg)
![Building Docker images
FROM ubuntu
MAINTAINER James Turnbull "james@example.com"
RUN apt-get -qqy update
RUN apt-get install -qqy apache2
ADD index.html /var/www/
ENV APACHE_RUN_USER www-data
ENV APACHE_RUN_GROUP www-data
ENV APACHE_LOG_DIR /var/log/apache2
EXPOSE 80
ENTRYPOINT ["/usr/sbin/apache2"]
CMD ["-D", "FOREGROUND"]](https://crownmelresort.com/image.slidesharecdn.com/usingdockerwithpuppet-jamesturnbullkickstarter-140925195603-phpapp01/75/Using-Docker-with-Puppet-PuppetConf-2014-16-2048.jpg)
![Librarian Puppet
FROM ubuntu:14.04
MAINTAINER James Turnbull "james@example.com"
RUN apt-get -y -q install wget git-core rubygems
RUN gem install --no-ri --no-rdoc puppet librarian-puppet
ADD Puppetfile /
RUN librarian-puppet install
RUN puppet apply --modulepath=/modules -e "class { 'nginx': }"
RUN echo "daemon off;" >> /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx"]](https://crownmelresort.com/image.slidesharecdn.com/usingdockerwithpuppet-jamesturnbullkickstarter-140925195603-phpapp01/75/Using-Docker-with-Puppet-PuppetConf-2014-40-2048.jpg)
Uploaded byPuppet
Using Docker with Puppet - PuppetConf 2014
This document discusses Docker containers and how they compare to virtual machines and configuration management tools like Puppet. It provides an overview of Docker, including how to build Docker images using Dockerfiles. It then compares Dockerfiles to shell scripts and configuration management, noting advantages and disadvantages of each. The document suggests using Puppet to install Docker and build Docker images, but not running Puppet inside containers. It provides examples of building Docker images that use Puppet for configuration.
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Similar to Using Docker with Puppet - PuppetConf 2014
Using Docker with Puppet - PuppetConf 2014
- 1. Docker and Puppet Containerization is the new virtualization
- 5. What's this all about?
- 6.
- 7.
- 8.
- 9.
- 10. Run in many places.
- 11. Isolated, layered, standardand content agnostic
- 12. But this isn't new?!!?
- 13. So why shouldI care? Software delivery mechanism - a bit like a package! Put your application in a container, run it anywhere A bit like a VM but ...
- 14. Caring Containers bootfaster Containers have less overhead Containers bring native performance Containers are Cloud & VM-compatible
- 15. Docker Basics Image& Dockerfile The Docker Hub Container
- 16. Building Docker images FROM ubuntu MAINTAINER James Turnbull "james@example.com" RUN apt-get -qqy update RUN apt-get install -qqy apache2 ADD index.html /var/www/ ENV APACHE_RUN_USER www-data ENV APACHE_RUN_GROUP www-data ENV APACHE_LOG_DIR /var/log/apache2 EXPOSE 80 ENTRYPOINT ["/usr/sbin/apache2"] CMD ["-D", "FOREGROUND"]
- 17. Building the image $ sudo docker build -t="jamtur01/apache2" .
- 18. Sharing the image $ sudo docker push jamtur01/apache2
- 19. Running the container $ sudo docker run -ti -p 80:80 jamtur01/apache2
- 20.
- 21. So does the Dockerfile solve all?
- 22. Well sorta... Itdepends.
- 23. Doesn't have todeal with low-level stuff Doesn't have to converge Rebuilds are fast and cached Allows inheritance and composition Easy learning curve
- 24.
- 25. Doesn't deal withlow-level stuff Doesn't define resource dependencies Doesn't define what runs when
- 26. Dockerfile versus Shellscript
- 27. Shell scripts Okayfor simple stacks Imperative Rarely idempotent
- 28. Dockerfile versus Configuration Management
- 29. The Good Handleslow-level stuff Abstracts details Ensures convergence to a known state Library of reusable, composable templates
- 30. The Bad Steeplearning curve Generally requires a trigger Resource-intensive
- 31. Digging and fixing, Having so much fun Working together, They get the job done
- 32. Before Use Puppetto setup hardware, install packages, deploy code, run services. After Use Puppet to setup hardware, install Docker, run containers. Use Dockerfiles to install packages, deploy code, run services.
- 33. Install Docker withPuppet
- 34. Should I run Puppet in my containers?
- 35.
- 36. Should I use Puppet to build my images?
- 37.
- 38. Deploying a Puppet-powered container
- 39. Puppet Apply FROMubuntu:14.04 MAINTAINER James Turnbull "james@example.com" RUN apt-get -qqy update RUN apt-get -qqy install rubygems RUN gem install --no-ri --no-rdoc puppet RUN mkdir /puppet WORKDIR /puppet ADD site.pp /puppet/site.pp RUN puppet apply site.pp
- 40. Librarian Puppet FROMubuntu:14.04 MAINTAINER James Turnbull "james@example.com" RUN apt-get -y -q install wget git-core rubygems RUN gem install --no-ri --no-rdoc puppet librarian-puppet ADD Puppetfile / RUN librarian-puppet install RUN puppet apply --modulepath=/modules -e "class { 'nginx': }" RUN echo "daemon off;" >> /etc/nginx/nginx.conf EXPOSE 80 CMD ["nginx"]
- 41.
- 42. What if wecould get rid of... SSHd - Access via nsenter or docker exec Crond in a container Logging in a container
- 43. Creates a new architecture
- 44. Separates orthogonal concerns Don't rebuild your app to change services Have different policies in domains Ship lighter apps