Follow along : slides.com/shrikrishna/docker-2/live
Source: docker.io
Docker
- Application Sandbox
- Cross Platform
- Lightweight
- Intuitive
Source: xkcd.com/1168
Goals
- Abstract infrastructure
- Reduce conflict between sysadmins and developers
Source: xkcd.com/705
Ecosystem
- Docker Daemon
- Docker Client
- Docker Hub / Registry
- Docker Images
- Docker Containers
- Dockerfile
- Compose
- Swarm
Source: xkcd.com/1636
Versus
Layers
- Copy-on-write filesystem
- Multiple read-only layers
- Shared between running containers
- Ephemeral layer at the top
Rails App Container
Docker Commands
Source: xkcd.com/196
Cheatsheet Yo!
- run
- ps
- inspect
- top
- diff
- images
- commit
- history
- push
- events
Dockerfile
- Description Language for building Docker images
- Akin to Makefile/Vagrantfile
- Caching
Compose
- YML Spec
- App as a collection of Services
- Automation
Source: xkcd.com/1319
Networking
- SDN - Software Defined Networking
- Single Host / Bridge
- Multi Host / Overlay
Overlay Network
Swarm
- Node
- Services And Tasks
- Load Balancing
Ecosystem
- Kubernetes, Marathon/Mesos
- AWS ECS, GCE
- Rancher, CoreOS
- Flocker (ClusterHQ), Weave
Obligatory Shameless Plug
sigalrm.io
Thank you
GDG Oct'16
By shrikrishna
