Introduction Docker

Introduction Talk Docker / Docker-compose

Transcript

1. Introduction Docker Martina Kraus 22.03.2017 @wing121 github.com/codekittey
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 2
3. What is Docker? Image: http://www.docker.com 3
4. Image: http://www.docker.com 4 What is Docker?
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?
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 6
7. Core concepts Image: http://www.docker.com 7
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 8
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?
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, 10
11. Let’s write our first Dockerfile 11
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 12
13. Let’s write our first docker-compose file 13
15. 15 Martina Kraus @wing121
16. Further Readings • https://github.com/wsargent/docker-cheat-sheet • https://docs.docker.com/ • https://docs.docker.com/compose/ 16