Running container at BlaBlaCar — While 42 (San-Francisco)

Meetup While42 in San-Francisco

Transcript

1. Running containers at
   #While42 (San-Francisco)
   

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2. $100
   $25
   $25 $25 $25
   

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3. 25 million
   members in January 2016
   

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4. 22 countries
   

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5. 20M
   40M
   80M
   160M
   129M
   2014 2015 2016 2017
   Travelers
   transported
   2014
   

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6. metal servers
   services
   run. containers
   120
   150+
   2000+
   

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8. github.com/coreos/rkt
   

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9. $ (sudo) rkt run ./image.aci
   Archive of filesystem
   & instructions of
   what to run
   Foreground process
   Require root
   

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10. $ rkt run example.org/image.aci
    Fetch the image first
    and then run it
    

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11. How to build an ACI?
    

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12. App Container (appc)
    Open specification that defines several aspects
    of how to run applications in containers
    

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13. Pronounced « digg-er »
    github.com/blablacar/dgr
    

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14. ├── aci-manifest.yml
    ├── attributes
    │ └── redis.yml
    ├── runlevels
    │ └── build
    │ └── install.sh
    └── templates
    └── etc
    └── redis
    └── redis.conf.tmpl
    

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15. name: aci-redis
    aci:
    app:
    exec:
    - /usr/bin/redis-server
    - /etc/redis/redis.conf
    

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16. name: aci-redis
    aci:
    app:
    exec:
    - /usr/bin/redis-server
    - /etc/redis/redis.conf
    dependencies:
    - aci-debian
    Not included in
    redis image
    

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17. Runlevel: Build
    

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18. ├── aci-manifest.yml
    ├── attributes
    │ └── redis.yml
    ├── runlevels
    │ └── build
    │ └── install.sh
    └── templates
    └── etc
    └── redis
    └── redis.conf.tmpl
    

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19. #!/bin/bash
    apt install -y redis-server
    

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20. Runlevel: Prestart
    

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21. Dump configuration files
    Initialize database/user
    Enable/Disable modules
    Change mod/owner
    

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22. ├── aci-manifest.yml
    ├── attributes
    │ └── redis.yml
    ├── runlevels
    │ └── build
    │ └── install.sh
    └── templates
    └── etc
    └── redis
    └── redis.conf.tmpl
    

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23. # templates/etc/redis/redis.conf.tmpl
    daemonize no
    port {{ .redis.port }}
    ...
    # attributes/redis.yml
    default:
    redis:
    port: 6379
    Resolved at
    runtime
    

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24. POD
    Running several ACIs
    in the same context
    

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25. name: example.org/pod-myapp:1
    pod:
    apps:
    - dependencies:
    - example.org/aci-nginx:1.8.1
    app:
    exec: [/usr/sbin/nginx, -g, daemon off]
    - dependencies:
    - example.org/aci-php:5.6
    - example.org/aci-myapp:42
    app:
    exec: [/usr/sbin/php5-fpm, -F]
    

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26. $ rkt run \
    example.org/pod-myapp_aci-nginx:1 \
    example.org/pod-myapp_aci-php:1
    

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27. pod-myapp_aci-nginx
    pod-myapp_aci-php
    Linux kernel
    other process
    ...
    1.2.3.4
    172.16.8.8
    :80
    :9000
    

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28. Services discovery with
    smartstack
    synapse + nerve
    by Airbnb
    

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29. Zookeeper
    haproxy
    php
    healtcheck
    mysql
    client
    server
    

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30. Thank you!
    @BlaBlaCarTech
    @MattKetmo
    blablatech.com
    

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