Kubernetes Discovery

这是一个服务发现组件，整合了Spring Cloud，可以让你的应用快速获取Kubernetes上部署的服务的实例信息。

快速开始

引入依赖

<dependency>
    <groupId>io.github.studeyang</groupId>
    <artifactId>kubernetes-discovery-starter</artifactId>
</dependency>

配置集群连接信息

icloud:
  kubernetes:
    apiServerUrl: https://127.0.0.0:5443
    insecureSkipTlsVerify: true
    oauth2Token: eyJhbXXX
    includeNamespaces: infra, vip

使用样例

package com.github.open.example.service;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class ExampleService implements InitializingBean {

    @Autowired
    private DiscoveryClient discoveryClient;

    @Override
    public void afterPropertiesSet() {
        System.out.println("===== Cloud Discovery Example =====");
        List<ServiceInstance> instance = discoveryClient.getInstances("courier-producer");
        System.out.println("instance: " + instance);
        System.out.println("ip: " + instance.stream().map(ServiceInstance::getHost).collect(Collectors.toList()));
    }
}

Kubernetes Service 配置

apiVersion: v1
kind: Service
metadata:
  name: service-courier-producer
  namespace: rc
  labels:
    discovery.disabled: false
    serviceId: courier-producer

上面配置省略了无关内容，相关字段说明如下：

• serviceId: 服务名
• discovery.disabled: 是否禁用服务发现