https://github.com/m-thirumal/eureka-server

Production-ready Spring Cloud: High Availability - Eureka Server
https://github.com/m-thirumal/eureka-server

eureka-discovery-service eureka-server eureka-service-discovery java spring-boot spring-boot-admin

Last synced: 6 months ago
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Production-ready Spring Cloud: High Availability - Eureka Server

• Host: GitHub
• URL: https://github.com/m-thirumal/eureka-server
• Owner: m-thirumal
• Created: 2020-02-27T13:45:59.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-05-22T11:08:42.000Z (about 1 year ago)
• Last Synced: 2024-05-22T11:35:23.749Z (about 1 year ago)
• Topics: eureka-discovery-service, eureka-server, eureka-service-discovery, java, spring-boot, spring-boot-admin
• Language: Java
• Homepage:
• Size: 560 KB
• Stars: 3
• Watchers: 3
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Eureka-server 

* [Eureka Server](http://localhost:8761) high availability (HA) for Production



### Dependent project

* [Spring boot admin server](https://github.com/M-Thirumal/spring-boot-admin-server)

## To Create jar

	mvn clean install

	

	mvn clean package -DskipTests=true

## Run as jar from terminal

	java -jar target/eureka-server-0.0.1-SNAPSHOT.jar

	

	java -jar -Dspring.profiles.active=DEV-PRIMARY target/eureka-server-0.0.1-SNAPSHOT.jar

	

	java -jar -Dspring.profiles.active=DEV-SECONDARY target/eureka-server-0.0.1-SNAPSHOT.jar

	

	java -jar -Dspring.profiles.active=DEV-TERTIARY target/eureka-server-0.0.1-SNAPSHOT.jar

	

## Docker

Create docker layered image using the following command

	mvn package

	chmod -R 777 target/

	mkdir -p target/dependency && (cd target/dependency; jar -xf ../*.jar)

	chmod -R 777 target/

	docker build -t eureka-server .

Run the image (with desired)

	docker run --name primary --restart always -d -p 8761:8761 -e "SPRING_PROFILES_ACTIVE=DEV-PRIMARY" eureka-server

	docker run --name secondary --restart always -d -p 8762:8762 -e "SPRING_PROFILES_ACTIVE=DEV-SECONDARY" eureka-server

	docker run --name tertiary --restart always -d -p 8763:8763 -e "SPRING_PROFILES_ACTIVE=DEV-TERTIARY" eureka-server

	

	# With local log

	

	docker run --name primary --restart always --log-driver local --log-opt max-size=10m -d -p 8761:8761 -e "SPRING_PROFILES_ACTIVE=DEV-PRIMARY" eureka-server

	docker run --name secondary --restart always --log-driver local --log-opt max-size=10m -d -p 8762:8762 -e "SPRING_PROFILES_ACTIVE=DEV-SECONDARY" eureka-server

	docker run --name tertiary --restart always --log-driver local --log-opt max-size=10m -d -p 8763:8763 -e "SPRING_PROFILES_ACTIVE=DEV-TERTIARY" eureka-server

	

	# Without log

	docker run --name primary --restart always --log-driver none -d -p 8761:8761 -e "SPRING_PROFILES_ACTIVE=DEV-PRIMARY" eureka-server

	docker run --name secondary --restart always --log-driver none -d -p 8762:8762 -e "SPRING_PROFILES_ACTIVE=DEV-SECONDARY" eureka-server

	docker run --name tertiary --restart always --log-driver none -d -p 8763:8763 -e "SPRING_PROFILES_ACTIVE=DEV-TERTIARY" eureka-server

	

	# If we use ${"HOST"} for ip-address

	docker run --name primary --restart always -d -p 8761:8761 -e "SPRING_PROFILES_ACTIVE=DEV-PRIMARY" -e "HOST=172.19.250.7" eureka-server

	docker run --name secondary --restart always -d -p 8762:8762 -e "SPRING_PROFILES_ACTIVE=DEV-SECONDARY" -e "HOST=172.19.250.8" eureka-server

	docker run --name tertiary --restart always -d -p 8763:8763 -e "SPRING_PROFILES_ACTIVE=DEV-TERTIARY" -e "HOST=172.19.250.9" eureka-server

	

### Start EUREKA as JAR at OS boot automatically

Add the below line in `crontab -e`

	

	@reboot /{path-to-eureka-server-script}/eureka-server.sh {ENV}

Example:

	

	@reboot /home/thirumal/git/eureka-server/eureka-server.sh DEV-PRIMARY

	

Note: Add `cd /path-to-repo` to the shell script (1'st line)

	

### Replica 

* Make sure `eureka.instance.hostname: ` is same as `eureka.client.serviceUrl.defaultZone`. Check how it's configured in `PRO environment`

* If you want some of cluster to be independent set `eureka.client.fetchRegistry` is `false`. That is, don't want to fetch details from other cluster. Check `UDEV` environment `UDEV-SECONDARY`

	

### Swagger UI

[http://localhost:8761/swagger-ui/index.html](http://localhost:8761/swagger-ui/index.html)

[http://localhost:8761/api-docs](http://localhost:8761/api-docs)

### Credentials

	thirumal:thirumal

### Extras - PROMETHEUS(Run the following docker command in the `prometheus.yml`file directory.

    [http://localhost:8761/actuator/prometheus](Prometheus actuator endpoint)    

    docker run -d -p 9090:9090 -v /Users/thirumal/git/eureka-server/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus

	

## Troubleshoot

1. Client registering with `Public IP address` instead of private.

	* Solution: Need to hard code the IP address. Example

		

		eureka:

		  instance:

		    prefer-ip-address : true

		    ip-address : xx.xx.xx.xx