Zookeeper Sample

Spring Boot Admin Server integration with Apache Zookeeper for service discovery. This sample shows how to use Zookeeper as a service registry to automatically discover and monitor Spring Boot applications.

Overview

Location: spring-boot-admin-samples/spring-boot-admin-sample-zookeeper/

Features:

• Service discovery via Apache Zookeeper
• No Admin Client required on monitored apps
• Metadata-based configuration
• Custom actuator paths (/foo, /ping)
• Profile-based security

Prerequisites

• Java 17+, Maven 3.6+
• Apache Zookeeper installed

Running

Start Zookeeper

# Docker
docker run -d -p 2181:2181 zookeeper:3.8

# Or download from https://zookeeper.apache.org/

Start Admin Server

cd spring-boot-admin-samples/spring-boot-admin-sample-zookeeper
mvn spring-boot:run

Access at: http://localhost:8080

Configuration

spring:
  application:
    name: zookeeper-example
  cloud:
    zookeeper:
      connect-string: localhost:2181
      discovery:
        metadata:
          management.context-path: /foo  # Dots allowed (unlike Consul)
          health.path: /ping
          user.name: user
          user.password: password

management:
  endpoints:
    web:
      base-path: /foo
      path-mapping:
        health: /ping

Key Differences

vs. Consul

• Metadata keys: Dots allowed in Zookeeper
• Simplicity: Fewer features, simpler setup
• Use case: Hadoop/Big Data ecosystems

vs. Eureka

• Maturity: Zookeeper is older, more established
• Ecosystem: Hadoop/Kafka integration
• Complexity: More configuration required

See Also

• Zookeeper Integration
• Eureka Sample
• Consul Sample