News about Docker 1.13 and experience with Docker in Production.

1. Docker in Production
Something new or just buzzwords?

2. Gianluca Arbezzano
Software Engineer @CurrencyFair
DevOps enthusiast and Open Source developer.
● http://scaledocker.com
● http://gianarb.it
● https://twitter.com/gianarb
● https://github.com/gianarb
● hello@thumpflow.com
> Automate the boring stuffs.

3. Internet users in
the World
http://www.internetlivestats.com/internet-users/

4. Cloud Computing
1960s The initial concepts of time-sharing became popularized via RJE (Remote Job Entry);
[
1990s Telecommunications companies, who previously offered primarily dedicated point-to-point data circuits, began offering virtual
private network (VPN) services with comparable quality of service, but at a lower cost.
2000s Cloud computing has come into existence. In early 2008, NASA's OpenNebula
2006s Amazon introduced its Elastic Compute Cloud.
2008s Microsoft Azure was announced as "Azure". It was released on 1 February 2010 as Windows Azure
2010s Rackspace Hosting and NASA jointly launched an open-source cloud-software initiative known as OpenStack
https://en.wikipedia.org/wiki/Cloud_computing#Origin_of_the_term

5. Your application and your
business
That’s what matters

6. Problems that I see
● Onboarding new users
● Testing
● Deploy your application
● Scalability
● Timing
● Number of applications

7. Why containers are good
● Easier to deploy
● Good to keep developers and system administrator frends
● Less expensive to manage in time compared with VM. But you still need
VMs or at least servers.
● Immutable

8. you still need VMs or at least servers.

9. You still need to manage
● Network
● Hostname
● Firewall
● Maybe some tools like vim, you always need vim
● Docker itself needs to be installed and configurated

10. Everything as code:
1. Cloud init
2. Configuration management
3. Docker
https://github.com/chef-cookbooks/docker

11. VPN - It’s not complicated! Stop to think that...
https://community.openvpn.net/openvpn/wiki/BridgingAndRouting

12. dockerd -H fd:// -H tcp://10.7.5.22 --label kind=private

13. 6 October 2016
© 2016 CurrencyFair Ltd
Docker 1.13 makes
production environment
good.

14. 6 October 2016
© 2016 CurrencyFair Ltd
CLI redesign
Docker CLI is always a privileged client for the daemon. Thousand
of users learn how to run contains with this tools:
docker run -it alpine sleep 10

15. 6 October 2016
© 2016 CurrencyFair Ltd
CLI redesign
Advanced users or scripts to build complex solution:
find '/var/lib/docker/volumes/' -mindepth 1 -maxdepth 1 -type d | grep -vFf <(
docker ps -aq | xargs docker inspect | jq -r '.[]|.Mounts|.[]|.Name|select(.)'
)

16. 6 October 2016
© 2016 CurrencyFair Ltd
But was time for a
little re-design

17. 6 October 2016
© 2016 CurrencyFair Ltd
top level command
● checkpoint Manage checkpoints
● container Manage containers
● image Manage images
● network Manage networks
● node Manage Swarm nodes
● plugin Manage plugins
● secret Manage Docker secrets
● service Manage services
● stack Manage Docker stacks
● swarm Manage Swarm
● system Manage Docker
● volume Manage volumes
100% compatible with the old commands:
run, stop, start and so on
http://blog.arungupta.me/docker-1-13-management-commands/

18. 6 October 2016
© 2016 CurrencyFair Ltd
Keep your environment clean
docker system
docker system info == docker info
docker system event => to follow stream’s events from deamon
docker system prune => to clean your env from bad layers,
volumes and networks

19. 6 October 2016
© 2016 CurrencyFair Ltd
Welcome compose v3
version: ‘3’
services:
micro:
image: gianarb/micro:1.2.0
deploy:
mode: replicated
replicas: 2
resources:
limits:
cpus: '0.25'
memory: 512M
reservations:
cpus: '0.25'
memory: 256M
restart_policy:
condition: on-failure
delay: 5s
max_attempts: 3
window: 120s
Compatible with Swarm mode
docker stack create
-c ./docker-compose.yml frontend

20. 6 October 2016
© 2016 CurrencyFair Ltd
Secrets are available in Swarm mode
docker secret create well ./secret.json
docker service create --secret well alpine sleep 1000
Secrets are running in directory /run

21. 6 October 2016
© 2016 CurrencyFair Ltd
Squash layers
docker build --squash -t jenkins-sq .

22. Demo
● https://github.com/gianarb/micro
● https://github.com/gianarb/docker-stack
● https://github.com/gianarb/papiro
● https://docs.docker.com/engine/swarm/secrets/
● https://docs.docker.com/engine/reference/commandline/system/
● https://docs.docker.com/docker-cloud/apps/stack-yaml-reference/

23. Thanks
http://gianarb.it