Introduction Docker

Introduction Talk Docker / Docker-compose

Transcript

1. Introduction Docker
   Martina Kraus
   22.03.2017
   @wing121
   github.com/codekittey
   

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2. Agenda
   ● Docker Basics?
   ○ What is Docker?
   ○ Why should I docker?
   ○ Core concepts
   ○ Containers and images
   ● Dockerfile
   ● Docker-Compose
   Break
   ● Live Demo/ Hands On: Learning Docker together wit Bday #Labs
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3. What is Docker?
   Image: http://www.docker.com 3
   

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4. Image: http://www.docker.com 4
   What is Docker?
   

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5. Docker is the world’s leading software container platform.
   Developers: use Docker to eliminate “works on my machine” problems when
   collaborating on code with co-workers.
   Operators: use Docker to run and manage apps side-by-side in isolated
   containers to get better compute density.
   Enterprises: use Docker to build agile software delivery pipelines to ship new
   features faster, more securely and with confidence for both
   Linux and Windows Server apps.
   What is Docker?
   

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6. Why should I Docker?
   Since (März 2013): (https://github.com/docker/docker)
   ● > 40, 000 stars
   ● > 2000 Contributors
   ● > 2000 dockerized applications and images:
   ○ Redis, Node.js, Hadoop, MySQL, PostgreSQL
   ● Integration with Jenkins, Travis, Chef, Puppet, Vagrant and OpenStack
   ● Docker-Meetups everywhere!!!!
   ○ DockerCon
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7. Core concepts
   Image: http://www.docker.com 7
   

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8. Details
   ● Isolated process-memory,
   ● Every container has its own network,
   ● Container === isolated process,
   ● OS kernel sharing,
   ● Docker is written in Go,
   ● Native use for Mac OS, Windows and Linux
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9. • Standardized packaging for
   software and dependencies
   • Isolate apps from each other
   • Share the same OS kernel
   • Works for all major Linux
   distributions
   • Containers native to Windows
   Server 2016
   What is a container?
   

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10. Docker-Images
    ● Fundament of Containers,
    ● Multiple containers can run using the same Docker-Image,
    ● Docker-Store contains some good basic images:
    ○ Nginx,
    ○ Node.JS,
    ○ MySQL,
    ● Containers are isolated from the Host and any other Containers:
    ○ You can decide what to share:
    ■ Ports,
    ■ Volumes (for persistent data (for database containers)),
    ■ networks,
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11. Let’s write our first Dockerfile
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12. Docker-Compose
    Define and run multi-container applications (services) with Docker
    ● Current Version: v1.11.2
    ● Offers cli-tools for container management:
    ○ Start
    ○ Stop
    ○ Rebuild
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13. Let’s write our first docker-compose file
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15. 15
    Martina Kraus
    @wing121
    

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16. Further Readings
    ● https://github.com/wsargent/docker-cheat-sheet
    ● https://docs.docker.com/
    ● https://docs.docker.com/compose/
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