10 things you need to know about Docker
Andrew T. Baker
What is Docker?
Docker.com says
Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications.
Docker Engine
A portable, lightweight runtime and packaging tool
Docker Hub
A cloud service for sharing applications and automating workflows
Less portable, minimal overhead
Most portable,
lots of overhead
Manual
configuration
Traditional VMs
CM tools
Docker
1
Containers vs. Virtual Machines
2
One process
per container
(mostly)
3
Don't install SSH
Use
docker exec
docker exec
Runs a new command inside an existing container
$ docker exec -it c05aa7baf600 bash
root@c05aa7baf600:/#docker exec [OPTIONS] CONTAINER COMMAND [ARG...]
4
Don't use containers in only one environment
5
Use the official
Docker Library images
6
Keep an eye out for Docker integrations
Source: Docker tweet
7
Avoid hosting service-specific dependencies
Cloud-agnostic hosting
8
Check out container-specific hosting services
Container-specific hosting
Container-specific hosting
Container-specific hosting
9
Figure out the
right time for you
2014
- Get to 1.0 (production-ready)
- Establish partnerships
- Round out some rough edges (v1.3)
2015
- Make Docker easier to use
- Popularize best practices for scaling
- "Include more batteries" (w/o cannibalizing ecosystem)
- Address security concerns
A new player
10
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