Having some Docker and Docker Compose knowledge in your pocket, you need to consider how you will eventually deploy your services. After all, that's what Docker's promise was to begin with, right? Deploying new container images should be painless and without surprises. During this workshop you will learn about Docker Machine and how it can help you prepare your servers for container deployments. Then you will get acquainted with the Swarm Mode of the Docker Engine. You will deploy services to virtualized servers on your own machine (which is just as easy as deploying to an actual cloud server it turns out). To round off this awesome journey, we will end this workshop with a discussion of some of the tougher aspects of multi-node Docker deployments. https://www.meetup.com/Ibuildings-Events/events/238138077/

1. DOCKER
SWARM
An introduction
Matthias Noback
@matthiasnoback
info@matthiasnoback.nl

2. some-other-machine
DOCKER
A daemon and a client
Docker
daemon
client
container container container

3. SWARM
Nodes running a Docker daemon "in Swarm mode"
Swarm
Node Node Node

4. CLI TOOLS
docker-machine and docker

5. CLUSTER MANAGEMENT
Easily add new nodes to a cluster

6. CONFIGURATION
Docker Compose file (some keys are ignored)
# docker-compose.yml
version: '3'
services:
...

7. SCALING
Configure the number of tasks (replicas)
Service (recipe)
Service_Task_1 Service_Task_2

8. SERVICE DISCOVERY & LOAD
BALANCING
Divide incoming requests over available tasks
Service_Task_1:80
(10.0.0.23)
Service_Task_2:80
(10.0.0.24)
service:80

9. Host 1
MULTI-HOST NETWORKING
Secure, even across data centers
Node Node
Host 2
Node Node
Swarm

10. NODES
No login required
Use docker-machine to provision them
Use docker to deploy to them

11. MANAGERS AND WORKERS
Resilient
Manager
Worker Worker
Manager
Worker

12. CLOSING
NOTES
Considerations

13. EVERYTHING IS AWESOME

14. STATE
Aim for stateless services

15. STATEFUL SERVICES
Don't persist state on the host
Use a "volume scheduler" REX-Ray

16. STATEFUL SERVICES
Use shared state (database)
Maybe use hosted solutions

17. STATEFUL SERVICES
Or: use replication

18. DISPOSABLE INFRASTRUCTURE
Make all setup automated

19. https://leanpub.com/the-devops-2-1-toolkit

22. https://leanpub.com/microservices-for-everyone/

23. https://training.matthiasnoback.nl/