The document discusses different approaches to service discovery with Docker containers: using a proxy like Etcd, Consul, or Zookeeper; using an overlay network like Weave or Flannel; or using configuration management tools like Confd, Configurator, or VisualOps. It provides pros and cons of each approach, like proxies being reliable but complex to set up, overlays providing flexibility but performance issues, and configuration management being simple but lacking role-based discovery. The document also provides an example of how VisualOps can be used for local service discovery testing without a heavy discovery solution.

1. Services discovery
with Docker
by Thibault Bronchain

2. Initial problem
— How to find Host B’s address/port in WS container?
— What if the container moves?

3. Services Discovery
— Services register availability
— Registered services can be located
— Services get notified if one location changes

4. Discovery using Proxy
— Etcd example

5. Common proxy solutions
— Non-exhaustive solutions list:
— Etcd
— Consul
— Zookeeper
— Pros:
— Reliable
— Flexible
— Cons:
— Heavy to setup
— Sometimes complex

6. Discovery using Overlay
— Weave example

7. Common overlay solutions
— Non-exhaustive solutions list:
— Weave
— Rudder/Flannel
— Kubernetes
— Tinc/Pipework
— Pros:
— It’s SDN
— Flexibility
— Cons:
— It’s SDN
— Heavy
— Not optimal performances

8. Discovery using
Configuration Management
— VisualOps example

9. Common CM solutions
— Non-exhaustive solutions list:
— Confd
— Configurator
— VisualOps
— Pros:
— Simple
— Non-intrusive
— High compatibility (native solution)
— Programmable
— Cons:
— No role-based discovery
— Necessary service restart

10. VisualOps Implementation

11. VisualOps local
implementation
— Deploy your cloud apps locally
— Uses the power of template DSL
— Remote hosts IPs -> local container IPs
— No heavy service discovery solution to install

12. — Thibault Bronchain: Technical Project Lead
@VisualOps
— VisualOps: Easy configuration, deployment &
orchestration of Cloud Apps
— www.visualops.io
… Thank You!