1.
Spring Cloud Config
JANANI VELMURUGAN,PMP

2.
Agenda
 Why Configuration Server ?
 Spring Cloud Config Server
 Config Server - REST Endpoints
 Spring Cloud Config Client
 Update Configuration at Runtime

3.
Introduction
 Managing application configuration in a distributed system
 Central place to manage external properties for applications across all
environments.

4.
Non-distributed vs Distributed
Application
 Non-distributed Application – Monolithic
 One or a handful of configuration files
 Distributed Application - Microservices
 Many configuration files for each microservice

5.
How to manage Configuration?
 Configuration Management Tool - Chef,Puppet,Ansible
 Not ideal for the cloud

6.
Challenges

7.
Configuration Server - Dependency

8.
@EnableConfigServer

9.
Config Files – Set up
 {application}
 {application}-{profile}

10.
Config Server – application.properties

11.
REST Endpoint - Parameters

12.
REST Endpoints - Example
 GET/{application}/{profile}[/{label}]
 /myapp-dev.yml
 /myapp-prod.properties
 /myapp-default.properties
 GET/{application}-{profile}.(yml|properties)
 /myapp/dev/master
 /myapp/prod/v2
 /myapp/default
 GET/{label}/{application}-{profile} .(yml|properties)
 /master/myapp-dev.yml
 /v2/myapp-prod.properties
 /master/myapp-default.properties

13.
Spring Config Client
 Responsible for bootstrapping & fetching application configuration
 Before starting the spring application context, it fetches the application
configuration from server

14.
Spring Config Client - Dependency

15.
Two ways of fetch
 Config First
 Discovery First

16.
Update Configuration

17.
Update Configuration
 /refresh- POST=>/http://localhost:8080/refresh
 /monitor
 Install ngrok
 Right click ngrok=> Run as administrator
 ngrok http 8888
 Add webhook (next slide)
 Output
Reference:
1. https://spencergibb.netlify.com/blog/2015/09/24/spring-cloud-config-push-notifications/
2. http://www.baeldung.com/spring-cloud-bus
ngrok by @inconshreveable (Ctrl+C to quit)
Session Status online
Version 2.2.8
Region United States (us)
Web Interface http://127.0.0.1:4040
Forwarding http://96300031.ngrok.io -> localhost:8888
Forwarding https://96300031.ngrok.io -> localhost:8888
Connections ttl opn rt1 rt5 p50 p90
1 0 0.00 0.00 16.97 16.97
HTTP Requests
-------------
POST /monitor 200

18.
Update Configuration - Add Webhook

19.
Thank You
 Github Repository : https://github.com/JananiVelmurugan