Configuring Eureka Server with Jenkins: Deployment Scripts and Setup Guide

Step 1 – Prepare the Eureka server directory

Create the base directory and a configuration sub‑directory on the target host.

[root@hd01 eureka]# mkdir /usr/local/eureka
[root@hd01 eureka]# mkdir config

Step 2 – Create a simple run script (run.sh)

The script changes to the Eureka directory and starts the JAR in the background.

cd /usr/local/eureka && nohup java -jar eureka.jar >>nohup.out &

Step 3 – Prepare the Jenkins build environment

Navigate to the Jenkins workspace, list the generated artifacts and verify the JAR file.

[root@jenkins ~]# cd /var/lib/jenkins/workspace/eureka/target/
[root@jenkins target]# ll
# (output shows eureka.jar, eureka.jar.original, etc.)

Step 4 – Write the eureka.sh deployment script

This script backs up previous versions, kills any running Eureka process, and launches the new JAR with the test profile.

#!/bin/bash
DATE=$(date +%Y%m%d)
DIR=/usr/local/eureka
JARFILE=eureka.jar
if [ ! -d $DIR/backup ]; then
    mkdir -p $DIR/backup
fi
cd $DIR
sleep 2
ps -ef | grep $JARFILE | grep -v grep | awk '{print $2}' | xargs kill -9
java -jar $JARFILE --spring.profiles.active=test > nohup.out &

Step 5 – Configure Eureka with Spring Cloud

Edit application-test.yml under /usr/local/eureka/config to set server port, service name, network preferences and Eureka client URLs.

server:
  port: 9762
spring:
  application:
    name: eureka-server
  cloud:
    inetutils:
      preferred-networks: 192.168.40.24
    eureka:
      client:
        service-url:
          defaultZone: http://192.168.40.24:${server.port}/eureka/
        register-with-eureka: true
        fetch-registry: true
      instance:
        prefer-ip-address: true

After saving the configuration, restart the Eureka service using the eureka.sh script, then trigger a Jenkins build to pull the latest JAR from Git and deploy it.

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