Apt get no more let Vagrant, Puppet and Docker take the stage
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Presentation I presented at Codemotion 2015 in Rome. It's about how to build and share reproducible, portable development environments with Vagrant and Docker
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Similaire à Apt get no more let Vagrant, Puppet and Docker take the stage
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Apt get no more let Vagrant, Puppet and Docker take the stage
- 1. ROME 27-28 march 2015 Alessandro Cinelli (cirpo) Apt-get no more let Vagrant, Puppet and Docker take the stage
- 2. “it works on my machine”
- 4. “Everything is written in the README”
- 5. “Everything is written in the wiki”
- 7. “oh shit, I forgot to update XYZ”
- 9. “cool this opensource project on github… how can I run it?”
- 10. “I don’t f*#c?ing care about the platform, I want to build something cool NOW!”
- 11. SOLUTIONS?
- 13. VIRTUAL MACHINES
- 14. BUT VIRTUAL MACHINES COULD BE HUUUUUUGE
- 15. enter
- 16. “Create and configure lightweight, reproducible, and portable development environments.”
- 17. YOU CAN HAVE A VM WITH FEW Kbs
- 18. download and install vagrant
- 19. download and install vagrant create a Vagrantfile
- 20. download and install vagrant create a Vagrantfile run “vagrant up”
- 21. download and install vagrant create a Vagrantfile run “vagrant up” enjoy
- 22. VagrantFile
- 24. VagrantFile base box url vm box name
- 25. VagrantFile base box url vm box name vm ip
- 26. VagrantFile base box url vm box name vm ipshared folder
- 27. VagrantFile base box url vm box name vm ipshared folder vm ram
- 28. VagrantFile base box url vm box name vm ipshared folder vm ram vm #cpus
- 29. BOXES
- 30. BOXES
- 32. PROVISIONERS
- 33. VM $ vagrant up provisioners $ ssh thanks Rohit Dantas
- 38. how to automate the provisioning?
- 44. X
- 45. IF THE STACK DOESN’T CHANGE TOO MUCH JUST PROVIDE A READY MADE VM MACHINE… THE PROVISIONER WILL ONLY CHANGE CONFIG FILES
- 47. BUILD A NEW MACHINE IF YOU HAVE TO UPGRADE/ADD A SERVICE
- 49. “Operating-system-level virtualisation is a 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
- 51. lego
- 57. DIFFERENCE BETWEEN A VM 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
- 58. VS (VM)
- 59. FIGHT IMAGE
- 60. environment dev all (dev, staging, live) boot speed minutes seconds host dependency almost everywhere linux
- 61. VS Full isolation and garanteed resources ? Then go with vagrant/VM
- 62. VS Isolated processes and tons of them? Then go with Docker
- 63. THE DOCKER CREW INVENTED CONTAINERS?
- 64. THE DOCKER CREW INVENTED CONTAINERS? no
- 65. THE DOCKER CREW INVENTED CONTAINERS? NO
- 66. Linux CONTAINERS (LCX) came from FreeBsd jails and chroot, at least 5 years ago used by Heroku(PaaS)
- 67. Docker is a great, super mega awesome way to orchestrate containers
- 68. numbers
- 70. DIFFERENCE BETWEEN DOCKER AND A VM WITH DOCKER YOU DON’T HAVE THE OVERHEAD GIVEN BY THE VIRTUALISATION
- 71. DockerFile
- 73. DockerFile container image commands while building the container }
- 74. DockerFile container image commands while building the container copy some content while building the container }
- 75. DockerFile container image commands while building 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 while building 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 while building 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 while building 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 and enjoy: $: docker run --link my-redis:redis -p 9200:9200 -d node-app
- 82. DEMO
- 83. windows 98 bsod
- 84. +
- 85. why vagrant and docker? YES YOU CAN!
- 86. Docker still requires Linux kernel 3.8 or higher. This bounds considerably the environments Docker can natively run on.
- 92. dubai
- 93. dubai
- 94. namshi
- 95. namshinamshi
- 96. SOA
- 99. DOCKER IS A PERFECT MATCH!
- 100. DOCKER IS A PERFECT MATCH! EVEN FOR DEVELOPMENT
- 101. fake service? no problem DO YOU NEED TO FAKE A SERVICE? NO PROBLEM, JUST SPIN UP A CONTAINER IN NO TIME
- 102. NGINX-PROXY
- 104. APIDOC (DEMO)
- 105. APIDOC (DEMO)
- 106. NGINX-PROXY
- 107. DOCKER PROS Matter of seconds 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 really works really well just on Linux atm It’s a young project, things change very fast Lack of proper management tool
- 109. DOCKER CONS It really works really well just on Linux atm It’s a young project, things change very fast Lack of proper management tool
- 112. NODE-DOCK
- 113. Docker disk space cleanup $: docker rm $(docker ps -a -q) $: docker images | grep "<none>" | awk '{ print "docker rmi " $3 }' | bash
- 114. https://github.com/dummymael/dotfiles/blob/ 1859a36afba2252f86a0a1ff8d5fb442e74b7a0e/tools/ docker_clean_vfs.py $: pip install docker-py
- 117. THANKS!