Docker: The basics - Including a demo with an awesome full-stack JS app
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The document provides an overview of Docker, including its basic commands and parameters for running containers and integrating components like MongoDB and Java apps. It outlines the architecture of an online Kanban board and introduces Docker Compose for managing multiple containers with a single command. A demo is also included to illustrate the discussed concepts.
Docker: The basics - Including a demo with an awesome full-stack JS app
- 1. Docker: The basics Marcelo Costa Cloud Integration Engineer, Connections Cloud May 2016 Including a demo with an awesome full-stack JS app
- 2. Agenda ● What is Docker? ● What is Jquery, MongoDB and Nashorn? ● The high-level architecture of the Online Kanban Board ● Docker run syntax / putting everything together ● What is Docker-Compose and why it is so amazing ● DEMO ● Q & A
- 4. What is Jquery, MongoDB and Nashorn? Must mention: avatar.js
- 5. The high-level architecture of the Online Kanban Board
- 6. Docker run syntax / putting everything together 1/2 The basics: ● docker run -it busybox:latest ● docker run -d busybox:latest top c646318a53cd4e16780cd654fa6df854c6550e089491f4a805ba16edd3b94c32 ● docker attach c646 ● ctrl+c stops the container (ssh if you need to jump into containers without impacting→ them) ● Some important parameters: Parameters Configuration -d (detached) Runs in detached mode (not interactive) --name Name of the container (ID) -h (Hostname) Hostname within Docker Network --link Allow communication within Docker Network -p (Port) Exposed port (host:container) -v (Volume) Mapped Volume/disk/path (host:container) <image> Name of the image (parent obj of the container) -w (Working Dir) Initial directory/folder for container commands
- 7. Docker run syntax / putting everything together 2/2 ● Adding some complexity: ● docker run -d --name mydbcontainer -h mykanbandbhost -p 27017:27017 -v /home/marcelo/.docker-volumes/myOnlineKanban/data:/data/db mongo ● docker run -d --name mykanban -h mykanbanapp --link mydbcontainer -p 8080:8080 -w /opt/mykanban -v /home/marcelo/Projects/MyOnlineKanban/mykanban:/opt/mykanban java:8 /usr/bin/jjs -cp lib/mongo-2.10.1.jar httpsrv.js Listing running containers: ● docker ps --filter status=running CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 4c97e0fca863 busybox:latest "top" 3 seconds ago Up 2 seconds stupefied_euclid
- 8. What is Docker-Compose and why it is so amazing ● Instead of executing multiple “docker run” commands or opening multiple terminals to start and track each container configuration, use a single command: Docker-compose up ● Docker-compose.yml mykanban: image: java:8 working_dir: /opt/mykanban/ command: jjs -cp lib/mongo-2.10.1.jar httpsrv.js links: - mydbcontainer ports: - '8080:8080' volumes: - ~/Projects/MyOnlineKanban/mykanban:/opt/mykanban mydbcontainer: image: mongo environment: MONGODB_USER: mongouser MONGODB_PASSWORD: meh123 hostname: mykanbandbhost ports: - '27017:27017' volumes: - ~/.docker- volumes/myOnlineKanban/data:/data/db/
- 9. DEMO
- 10. Q & A