Apt get no more let Vagrant, Puppet and Docker take the stage
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The document discusses the benefits and usage of Vagrant and Docker for creating lightweight, reproducible development environments. It highlights that Docker, which utilizes operating-system-level virtualization, can provide faster boot times and reduced overhead compared to traditional virtual machines. Additionally, it emphasizes the ease of automating deployments and running containers, while noting some limitations of Docker's compatibility with operating systems and management tools.
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Apt get no more let Vagrant, Puppet and Docker take the stage
- 1. ROME 27-28 march2015 Alessandro Cinelli (cirpo) Apt-get no more let Vagrant, Puppet and Docker take the stage
- 2. “it works onmy machine”
- 3.
- 4. “Everything is written inthe README”
- 5. “Everything is written inthe wiki”
- 6.
- 7. “oh shit, Iforgot to update XYZ”
- 8.
- 9. “cool this opensource projecton github… how can I run it?”
- 10. “I don’t f*#c?ingcare about the platform, I want to build something cool NOW!”
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- 14. BUT VIRTUAL MACHINESCOULD BE HUUUUUUGE
- 15.
- 16. “Create and configurelightweight, reproducible, and portable development environments.”
- 17. YOU CAN HAVEA VM WITH FEW Kbs
- 18. download and installvagrant
- 19. download and installvagrant create a Vagrantfile
- 20. download and installvagrant create a Vagrantfile run “vagrant up”
- 21. download and installvagrant create a Vagrantfile run “vagrant up” enjoy
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- 24. VagrantFile base box url vmbox name
- 25. VagrantFile base box url vmbox name vm ip
- 26. VagrantFile base box url vmbox name vm ipshared folder
- 27. VagrantFile base box url vmbox name vm ipshared folder vm ram
- 28. VagrantFile base box url vmbox name vm ipshared folder vm ram vm #cpus
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- 33. VM $ vagrant up provisioners $ssh thanks Rohit Dantas
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- 38. how to automatethe provisioning?
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- 45. IF THE STACKDOESN’T CHANGE TOO MUCH JUST PROVIDE A READY MADE VM MACHINE… THE PROVISIONER WILL ONLY CHANGE CONFIG FILES
- 47. BUILD A NEWMACHINE IF YOU HAVE TO UPGRADE/ADD A SERVICE
- 49. “Operating-system-level virtualisation isa virtualisation method where the kernel of an operating system allows for multiple isolated user space instances, instead of just one. Such instances, often called CONTAINERS, or jails, may look and feel like a real server from the point of view of its owners and users.” http://en.wikipedia.org/wiki/Docker_%28software%29
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- 57. DIFFERENCE BETWEEN AVM AND DOCKER HOST OS GUEST OS HYPERVISOR BIN/ LIBS APP A APP C APP B GUEST OS BIN/ LIBS APP Z APP H APP B GUEST OS BIN/ LIBS APP A APP D APP L HOST OS DOCKER ENGINE BIN/ LIBS APP A BIN/ LIBS APP Z BIN/ LIBS APP D BIN/ LIBS APP B{ { VM
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- 60. environment dev all(dev, staging, live) boot speed minutes seconds host dependency almost everywhere linux
- 61. VS Full isolation andgaranteed resources ? Then go with vagrant/VM
- 62. VS Isolated processes andtons of them? Then go with Docker
- 63. THE DOCKER CREWINVENTED CONTAINERS?
- 64. THE DOCKER CREWINVENTED CONTAINERS? no
- 65. THE DOCKER CREWINVENTED CONTAINERS? NO
- 66. Linux CONTAINERS (LCX) camefrom FreeBsd jails and chroot, at least 5 years ago used by Heroku(PaaS)
- 67. Docker is agreat, super mega awesome way to orchestrate containers
- 68.
- 70. DIFFERENCE BETWEEN DOCKERAND A VM WITH DOCKER YOU DON’T HAVE THE OVERHEAD GIVEN BY THE VIRTUALISATION
- 71.
- 72.
- 73. DockerFile container image commands whilebuilding the container }
- 74. DockerFile container image commands whilebuilding the container copy some content while building the container }
- 75. DockerFile container image commands whilebuilding the container copy some content while building the container declare a volume: data accessible by other containers and useful to mount a filesystem }
- 76. DockerFile container image commands whilebuilding the container copy some content while building the container declare a volume: data accessible by other containers and useful to mount a filesystem environment variable }
- 77. DockerFile container image commands whilebuilding the container copy some content while building the container declare a volume: data accessible by other containers and useful to mount a filesystem environment variable container port exposed to other containers }
- 78. DockerFile container image commands whilebuilding the container copy some content while building the container declare a volume: data accessible by other containers and useful to mount a filesystem environment variable container port exposed to other containers the container command executed when you run it }
- 79. Build the container: $:docker build -t node-app . Run the container: $: docker run -it node-app
- 80. Build another container: $:docker build -t my-redis . Run the container: $: docker run -it my-redis
- 81. Link them andenjoy: $: docker run --link my-redis:redis -p 9200:9200 -d node-app
- 82.
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- 84.
- 85. why vagrant anddocker? YES YOU CAN!
- 86. Docker still requiresLinux kernel 3.8 or higher. This bounds considerably the environments Docker can natively run on.
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- 97.
- 99. DOCKER IS APERFECT MATCH!
- 100. DOCKER IS APERFECT MATCH! EVEN FOR DEVELOPMENT
- 101. fake service? noproblem DO YOU NEED TO FAKE A SERVICE? NO PROBLEM, JUST SPIN UP A CONTAINER IN NO TIME
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- 107. DOCKER PROS Matter ofseconds to start an image Can start multiple copies immediately Central repo for images You can go on staging and live from dev with the same container Versioning
- 108. DOCKER CONS It reallyworks really well just on Linux atm It’s a young project, things change very fast Lack of proper management tool
- 109. DOCKER CONS It reallyworks really well just on Linux atm It’s a young project, things change very fast Lack of proper management tool
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- 113. Docker disk spacecleanup $: docker rm $(docker ps -a -q) $: docker images | grep "<none>" | awk '{ print "docker rmi " $3 }' | bash
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- 118. credits http://blog.docker.com/media/Docker_Infographic_FINAL.jpg https://www.flickr.com/photos/chuddlesworth/7059061549 Tim Haak https://speakerdeck.com/timhaak/vagrant-is-so-last-year-why-arent-you-using-docker-yet RohitDantas https://speakerdeck.com/rohitdantas