Looking at some of the major challenges you’re facing while using containers in real-world project. How to scale? Where is the database? How to handle state? How to interconnect containers and how to resolve their addresses? This session will give you some of the common pitfalls of using containers and how to overcome those. ——— Speaker: Daniel Gauch – Head of Development, Vice President at AXON IVY AG

1. WWW.AXONIVY.COM
April 9th, 2016
Daniel Gauch
(DOCKER) CONTAINER CHALLENGES & SOLUTIONS
DEVDAY DA NANG 2016

3. DOCKER CONTAINERS
WHAT IS DOCKER?
Infrastructure
Host OS
Hypervisor
Guest OS
Bins/Libs
App
Guest OS
Bins/Libs
App
Infrastructure
Host OS
Docker Platform
Bins/Libs
App
Bins/Libs
App
Virtual Machine Container

4. DOCKER CONTAINERS
DOCKER ARCHITECTURE
https://docs.docker.com/engine/introduction/understanding-docker/

5. DOCKER CONTAINERS
COMMON CHALLENGES
Networking
& Scale
State Deployment

6. DOCKER CONTAINERS
NETWORKING
Docker Host (192.168.99.100)
bridge: 172.17.0.0/16
172.17.0.2 172.17.0.3 172.17.0.4 172.17.0.5 172.17.0.6

7. DOCKER CONTAINERS
NETWORKING
Docker Host (192.168.99.100)
bridge: 172.17.0.0/16
172.17.0.2 172.17.0.3 172.17.0.2 172.17.0.3
Docker Host (192.168.99.101)
bridge: 172.17.0.0/16

8. DOCKER CONTAINERS
NETWORKING
Docker Host (192.168.99.100)
overlay: 10.0.0.0/8
10.0.0.1 10.0.0.2 10.0.0.3 10.0.0.4
Docker Host (192.168.99.101)

9. DOCKER CONTAINERS
HOW TO HANDLE STATE
What is
the
problem?

10. DOCKER CONTAINERS
HOW TO HANDLE STATE - VARIANT 1
Containerized World
External Database (as a Service)

11. DOCKER CONTAINERS
HOW TO HANDLE STATE - VARIANT 2
Containerized World
Persistent volume

12. DOCKER CONTAINERS
HOW TO HANDLE STATE - VARIANT 3
Containerized World
Distributed, masterless database

13. DOCKER CONTAINERS
DEPLOYMENT PITFALLS
Imagine this:
• Build job creates our application „crm.war“
• Build job starts a container with a WildFly running
• Build job automatically deploys „crm.war“ to WildFly
Is this a truly containerized application?
crm.war

14. DOCKER CONTAINERS
DEPLOYMENT PITFALLS
Imagine this:
• Build job creates our application „crm.war“
• Build job creates an image with
• WildFly, having „crm.war“ deployed
• PostgreSQL database server, which „crm.war“ uses
• Build job automatically starts a container with that image
Is this a truly containerized application?

15. https://docs.docker.com/mac/
https://docs.docker.com/linux/
https://docs.docker.com/windows/
DOCKER CONTAINERS
GET STARTED