LXD System Containers [en]

Transcript

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

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   None
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   Unicode Character 'HAPPY PERSON RAISING ONE HAND' (U+1F64B)

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   Hosting?

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   Testing?

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   Live Testing?

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   OS Updates?

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   Deployments?

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    Load Balancing?

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    None
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    None
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    SIN CE 2000

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

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    None
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    (#) Internet

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    None
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    (d|t) Digital Transformation

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

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

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    System Container?

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    System? Container

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

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

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

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    APPLICATION OS KERNEL MACHINE Server Machine "Bare Metal"

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    Virtualization

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    VirtualBox XEN LXD Docker

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    APPLICATION OS KERNEL MACHINE H VirtualBox "Hardware Virtualization"

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    XEN "Paravirtualization" APPLICATION OS KERNEL MACHINE

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    APPLICATION OS KERNEL MACHINE LXD "System Container"

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    APP APP APP LIB LIB LIB KERNEL MACHINE Docker "Application

    Container"
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    LXD

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

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    Features • Images • Instant Snapshots • Remotes, Transfer •

    Space efficient • Disc- / Ram- / CPU Efficiency!
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    LXC CLI LXD Daemon LXC / Net.-Bridge ZFS LXD Components

    / Architecture
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    C:\>_ LXD Operations LXC local Commands

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    Create Container lxc launch ubuntu:16.04 my-container

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    List Containers lxc list

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    Start Container lxc start my-container

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    Stop Container lxc stop my-container

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

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    Copy Container lxc copy my-container new-con

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    Rename Container lxc move my-container mynewname

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    Destroy Container lxc delete my-container

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

    is licensed by CC 3.0 BY
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    Create Snapshot lxc snapshot my-container or lxc snapshot my-container my-snap

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    Delete Snapshot lxc delete my-container/snapshot

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    Restore Snapshot lxc restore my-container snapshot

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

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

    by CC 3.0 BY
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    Icon made by Freepik from www.flaticon.com is licensed by CC

    3.0 BY 1 LXD Container = 1 GB
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    = ? GB Icon made by Freepik from www.flaticon.com is

    licensed by CC 3.0 BY
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    = ~1 GB! Icon made by Freepik from www.flaticon.com is

    licensed by CC 3.0 BY
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    ZFS Copy - on - Write

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    ZFS Copy - on - Write

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

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

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

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

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

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

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    HOSTING

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    HTTP Proxies Exposing Containers

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    Nginx Proxy HTTP Requests LXD Host LXD Container NGINX HTTP

    Proxy Apache / PHP
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    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; } }
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    NginX Proxy HTTP Requests LXD Host LXD Container A NGINX

    HTTP Proxy Apache / PHP LXD Container B Apache / PHP
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    Deployment Strategy blue-green

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

    Proxy Apache / PHP
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    Deployment Strategy blue-green LXD Host LXD Container A NGINX HTTP

    Proxy Apache / PHP Snapshot copy of A
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    Deployment Strategy blue-green LXD Host LXD Container A NGINX HTTP

    Proxy Apache / PHP LXD Container B Apache / PHP Testing
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    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; } }
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    Deployment Strategy blue-green LXD Host LXD Container B NGINX HTTP

    Proxy Apache / PHP LXD Container A Destroyed
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    Deployment Strategy blue-green LXD Host LXD Container B NGINX HTTP

    Proxy Apache / PHP
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    Image source: http://www.flickr.com/photos/rietje/76566707/ CC BY 2.0

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

    (...): Limiting Ressources • Live (State) Migration (experimental) • Nesting: Docker within LXD Containers • Setup: Modern Kernel Features required • OpenStack: Nodes
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    LXD System Containers: Lean & Fast, support Snapshots & Remotes

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