Skip to main content

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​