Embed Size (px)
Citation preview
copyright 2014 1
Docker:���A lot changed in a year
Chris Swan, CTO @cpswan
Cloud native networking
copyright 2014 2
TL;DR
Docker is important for DevOps because it tightens iteration loops
The core project developed very fast, but the ecosystem is now moving faster
They did it with Docker
copyright 2014 3
Why me?
copyright 2014
Grid, Cloud, Docker
4
copyright 2014
Docker inside
5
copyright 2014 6
This is a DevOps track, so���why do we care about Docker?
copyright 2014
John Boyd’s OODA loop
copyright 2014 8
In the beginning
copyright 2014
0.1.0 (2013-03-23)
Used LXC Registry to push/pull images
9
copyright 2014 10
Where were we a year ago?
copyright 2014
0.6.6 (2013-11-06) Runtime
• Ensure container name on register
• Fix regression in /etc/hosts
• Add lock around write operations in graph
• Check if port is valid
• Fix restart runtime error with ghost container networking
• Add some more colors and animals to increase the pool of generated names
• Fix issues in docker inspect
• Escape apparmor confinement
• Set environment variables using a file.
• Prevent docker insert to erase something
• Prevent DNS server conflicts in CreateBridgeIface
• Validate bind mounts on the server side
• Use parent image config in docker build
• Fix regression in /etc/hosts
11
Client
• Add -P flag to publish all exposed ports
• Add -notrunc and -q flags to docker history
• Fix docker commit, tag and import usage
• Add stars, trusted builds and library flags in docker search
• Fix docker logs with tty
RemoteAPI
• Make /events API send headers immediately
• Do not split last column docker top
• Add size to history
Other
• Contrib: Desktop integration. Firefox usecase.
• Dockerfile: bump to go1.2rc3
copyright 2014
We still didn’t have
• A regular release cycle • Compatibility with standard Linux distros
• Links
• Naming
Much of that came in 0.7.0 towards the end of Nov 2013
12
copyright 2014 13
The watershed release
copyright 2014
0.9.0 (2014-03-10)
Libcontainer
(LXC gets thrown under the bus)
14
copyright 2014
0.9.1 (2014-03-24)
Ubuntu 14.04 Centos 7
Etc.
15
copyright 2014 16
And then came DockerCon
copyright 2014
1.0.0 (2014-06-09)
Notable features since 0.12.0 (2014-06-05) • Production support
17
copyright 2014
libcontainer
18
copyright 2014
libswarm
19
copyright 2014
libchan
20
copyright 2014
Since 1.0.0
exec create
21
copyright 2014 22
Shocker, Flocker, Clocker
copyright 2014
Shocker
23
The issue The response
http://stealth.openwall.net/xSports/shocker.c https://news.ycombinator.com/item?id=7910117
copyright 2014
Flocker
24
copyright 2014
Clocker
25
copyright 2014 26
Composition
copyright 2014
Fig
27
copyright 2014
geard
28
copyright 2014
Panamax
29
copyright 2014 30
PaaS caught Docker
copyright 2014
Docker based PaaS
31
copyright 2014
Docker in PaaS
32
copyright 2014
PaaS == Opinionated?
33
copyright 2014
Docker might be the anti PaaS
34
copyright 2014
PaaS == Operationalised?
35
copyright 2014 36
Orchestration
copyright 2014
Everybody has one…
37
copyright 2014
Kubernetes is the one to watch
38
copyright 2014
This week…
39
copyright 2014
… not containerised cloud (yet)
40
copyright 2014 41
So why does it matter?
copyright 2014
Build, Ship > Run?
42
Image credit http://www.mediaagility.com/2014/docker-the-next-big-thing-on-cloud/
copyright 2014
Docker Hub
43
Image credit http://blog.docker.com/2014/06/announcing-docker-hub-and-official-repositories/
copyright 2014
Bottled software
44
Image credit CC Julio Morales https://www.flickr.com/photos/phooleo/4703216251
copyright 2014 45
There’s still a bunch of work to be done
copyright 2014
Containers don’t contain
46
With thanks to Dan Walsh @rhatdan Watch his DockerCon 2014 presentation at http://is.gd/dcrhdw
copyright 2014 47
The manifest problem
copyright 2014
Each active line creates a layer
48
Base OS Sources
Update repos Install nginx
Mod nginx.conf Mod index.html
copyright 2014
An image binds layers together
49
Base OS Sources
Update repos Install nginx
Mod nginx.conf Mod index.html
copyright 2014
Nginx example
The image is the unit of deployment
50
copyright 2014
Nginx example
What version of nginx is that?
51
copyright 2014
Nginx example
What version of OpenSSL installed?
52
?
copyright 2014
Nginx example
and which bash?
53
?
copyright 2014 54
My Docker wish list
copyright 2014
Feb 2014
Docker CLI Disk quotas
Route propogation
55
copyright 2014
Nov 2014
Docker CLI Disk quotas
Finer life cycle control
56
copyright 2014
If you want a better Docker
Learn Go
57
copyright 2014 58
And another thing…
copyright 2014
Windows
59
copyright 2014
Governance
1. Mature tooling/CI process so project can scale (more)���
2. Dealing with long outstanding pull requests���
3. Clear separation between Docker the company and Docker the project���(and clarification of MS relationship)���
4. Clear articulation of roadmap
60
copyright 2014
Maintainers
61
copyright 2014 62
How did we come so far so fast?
copyright 2014
They used Docker
63
copyright 2014 64
Wrapping up
copyright 2014 65
TL;DR
Docker is important for DevOps because it tightens iteration loops
The core project developed very fast, but the ecosystem is now moving faster
They did it with Docker
