LXD System Containers [en]

Transcript

1. Christoph Lühr @chluehr / bePHPug 2017-03-07 LXD System Containers

2. None
3. None

4. Unicode Character 'HAPPY PERSON RAISING ONE HAND' (U+1F64B)

5. Hosting?

6. Testing?

7. Live Testing?

8. OS Updates?

9. Deployments?

10. Load Balancing?

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13. SIN CE 2000

14. Image source: http://www.flickr.com/photos/robby_van_moor/5702589201/ CC BY-ND 2.0

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16. (#) Internet

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18. (d|t) Digital Transformation

19. https://en.wikipedia.org/wiki/File:Pimcore-logo-2016.svg

20. https://en.wikipedia.org/wiki/File:Pimcore-logo-2016.svg

21. System Container?

22. System? Container

23. Photo: drosen7900 http://www.flickr.com/photos/59691268@N00/26337022226 "The Internet Archive" Via: Photopin License: CC

    BY-NC-ND-2.0 https://creativecommons.org/licenses/by-nc-nd/2.0/ SERVER!

24. MACHINE CPU, RAM, BIOS/IO ("physical hardware")

25. LINUX / OS Kernel + Userspace (Init, Shells, Tools, Libs)

26. APPLICATION PHP, Mysql, Redis, ... (Daemons, Services & Code)

27. APPLICATION OS KERNEL MACHINE Server Machine "Bare Metal"

28. Virtualization

29. VirtualBox XEN LXD Docker

30. APPLICATION OS KERNEL MACHINE H VirtualBox "Hardware Virtualization"

31. XEN "Paravirtualization" APPLICATION OS KERNEL MACHINE

32. APPLICATION OS KERNEL MACHINE LXD "System Container"

33. APP APP APP LIB LIB LIB KERNEL MACHINE Docker "Application

    Container"

34. LXD

35. http://design.ubuntu.com/brand/canonical-logo

36. Features • Images • Instant Snapshots • Remotes, Transfer •

    Space efficient • Disc- / Ram- / CPU Efficiency!

37. LXC CLI LXD Daemon LXC / Net.-Bridge ZFS LXD Components

    / Architecture

38. C:\>_ LXD Operations LXC local Commands

39. Create Container lxc launch ubuntu:16.04 my-container

40. List Containers lxc list

41. Start Container lxc start my-container

42. Stop Container lxc stop my-container

43. Execute (in) Container lxc exec my-container my-cmd

44. Copy Container lxc copy my-container new-con

45. Rename Container lxc move my-container mynewname

46. Destroy Container lxc delete my-container

47. Snapshots Points in Time Icon made by Madebyoliver from www.flaticon.com

    is licensed by CC 3.0 BY

48. Create Snapshot lxc snapshot my-container or lxc snapshot my-container my-snap

49. Delete Snapshot lxc delete my-container/snapshot

50. Restore Snapshot lxc restore my-container snapshot

51. Create from Snapshot lxc copy my-container/my-snap \ new-container

52. Space Requirements Icon made by Freepik from www.flaticon.com is licensed

    by CC 3.0 BY

53. Icon made by Freepik from www.flaticon.com is licensed by CC

    3.0 BY 1 LXD Container = 1 GB

54. = ? GB Icon made by Freepik from www.flaticon.com is

    licensed by CC 3.0 BY

55. = ~1 GB! Icon made by Freepik from www.flaticon.com is

    licensed by CC 3.0 BY

56. ZFS Copy - on - Write

57. ZFS Copy - on - Write

58. Remotes Image source: http://www.iconarchive.com/show/ios7-icons-by-icons8/Network-Remote-Control-icon.html

59. Start remote Container lxc start my-remote:my-container

60. All CLI remotely! lxc xxxxx my-remote:my-container

61. Copy to Remote lxc copy my-container/my-snap \ my-remote:

62. Recap: Container Spec. remote:my-container/my-snap

63. Demo https://linuxcontainers.org/lxd/try-it/

64. HOSTING

65. HTTP Proxies Exposing Containers

66. Nginx Proxy HTTP Requests LXD Host LXD Container NGINX HTTP

    Proxy Apache / PHP

67. server { listen 80; server_name www.website.de; location / { proxy_pass

    http://10.1.1.264:80; client_max_body_size 100M; proxy_connect_timeout 300; proxy_send_timeout 300; proxy_read_timeout 300; send_timeout 300; } }

68. NginX Proxy HTTP Requests LXD Host LXD Container A NGINX

    HTTP Proxy Apache / PHP LXD Container B Apache / PHP

69. Deployment Strategy blue-green

70. Deployment Strategy blue-green LXD Host LXD Container A NGINX HTTP

    Proxy Apache / PHP

71. Deployment Strategy blue-green LXD Host LXD Container A NGINX HTTP

    Proxy Apache / PHP Snapshot copy of A

72. Deployment Strategy blue-green LXD Host LXD Container A NGINX HTTP

    Proxy Apache / PHP LXD Container B Apache / PHP Testing

73. server { listen 80; server_name www.website.de; set $host_blue 10.31.1.199; set

    $host_green 10.31.1.4; set $upstream $host_green; # default! if ($http_x_debug = "green") { set $upstream $host_green; } if ($http_x_debug = "blue") { set $upstream $host_blue; } location / { proxy_pass http://$upstream:80; } }

74. Deployment Strategy blue-green LXD Host LXD Container B NGINX HTTP

    Proxy Apache / PHP LXD Container A Destroyed

75. Deployment Strategy blue-green LXD Host LXD Container B NGINX HTTP

    Proxy Apache / PHP

76. Image source: http://www.flickr.com/photos/rietje/76566707/ CC BY 2.0

77. Features • VPCs: Networking / Bridges / ... • cgroups

    (...): Limiting Ressources • Live (State) Migration (experimental) • Nesting: Docker within LXD Containers • Setup: Modern Kernel Features required • OpenStack: Nodes

78. LXD System Containers: Lean & Fast, support Snapshots & Remotes

    & Transfers

79. Thanks! Questions? Christoph Lühr luehr@r-pentomino.de christoph.luehr@basilicom.de @chluehr Slides license Attribution-NonCommercial-ShareAlike

    3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/

80. Links & References • LXD https://linuxcontainers.org/lxd/