Talk from CorkDev.io meetup on Oct 13th 2015. Longer version of similar talk available here: http://www.slideshare.net/PierreVincent3/microservices-docker-service-discovery-with-smartstack-english-version

1. techblog.newsweaver.com
github.com/PierreVincent
@PierreVincent
pierrevincent
Microservices, Docker
& Service Discovery
with Smartstack
Oct 13th 2015
This work is licensed under a Creative Commons
Attribution 4.0 International License.
newsweaver

3. Microservices are small, autonomous
services that work together. Sam Newman
Building Microservices

5. Development
Staging
Production Servers
Dev
Registry
(git)
(build server)

6. A A
A A
B B
B B
X

7. github.com/airbnb/nerve
github.com/airbnb/synapse
Smartstack

8. Zookeeper
Application
Viewing History Service
API Application
Recommendations Service
SynapseHAProxyNerve
Smartstack
Overview

9. Application
Nerve
ZK
1.1.1.1
nerve.conf
name = viewing_history
ip = 1.1.1.1
port = 8080
healthCheck = /health
Smartstack
Nerve
API
(8080)
/health
Viewing History Service

10. Application
Synapse
ZK
1.1.1.2
synapse.conf
viewing_history → 9000
Smartstack
Synapse
HAProxy
1.1.1.1
haproxy.conf
viewing_history:
frontend: localhost:9000
backends: [1.1.1.1:8080]
GET
http://localhost:9000/users/123/viewingHistory
8080 Services
viewing_history: [1.1.1.1:8080]
Recommendations Service
ping

11. Base
(ex. Ubuntu)
ruby
synapse (gem)
HA Proxy
nerve (gem)
service.jar
synapse.conf / nerve.conf
startup script
JS files
startup script
Smartstack Base
startSynapse.sh
startNerve.sh
+ Tech
synapse.conf / nerve.conf + Service code
+ Config

12. FROM newsweaver/smartstack-java
# Discovery
ADD nerve.conf.json /etc/
ADD synapse.conf.json /etc/
# JAR
ADD service.jar /opt/service/
# Startup
ADD start.sh /opt/start.sh
ENTRYPOINT ["/opt/start.sh"]
Dockerfile
#!/bin/bash
/opt/startSynapse.sh
/opt/startNerve.sh
java -jar /opt/service/service.jar
start.sh
$ docker build -t my-service .
...
$ docker run -d -e ZK_HOSTS=zk1:2181,zk2:2181 my-service

13. color-service
color-service
color-service
color-ui-service
blue
{
"name": "blue",
"hex": "0000FF"
}
{
"name": "red",
"hex": "FF0000"
}
{
"name": "green",
"hex": "00FF00"
}
Demo !
github.com/PierreVincent/discovery-demo-color

14. Some reading...

15. techblog.newsweaver.com
Questions ?
@PierreVincent