Spring Kubernetes 服务发现中的云网关配置问题

Question

我正在尝试将 spring 云网关与 kubernetes 服务发现结合使用。下面是我正在使用的设置

build.gradle

plugins {
    id 'org.springframework.boot' version '2.2.0.BUILD-SNAPSHOT'
    id 'io.spring.dependency-management' version '1.0.8.RELEASE'
    id 'java'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

repositories {
    mavenCentral()
    maven { url 'https://repo.spring.io/milestone' }
    maven { url 'https://repo.spring.io/snapshot' }
}

ext {
    set('springCloudVersion', "Hoxton.BUILD-SNAPSHOT")
    set('springCloudKubernetesVersion', "1.0.3.RELEASE")
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
    implementation 'org.springframework.cloud:spring-cloud-starter-gateway'
    implementation 'org.springframework.cloud:spring-cloud-starter-kubernetes'
    implementation 'org.springframework.cloud:spring-cloud-starter-kubernetes-ribbon'
    testImplementation('org.springframework.boot:spring-boot-starter-test') {
        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
    }
}

dependencyManagement {
    imports {
        mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
        mavenBom "org.springframework.cloud:spring-cloud-kubernetes-dependencies:${springCloudKubernetesVersion}"
    }
}

test {
    useJUnitPlatform()
}

application.yml

spring:
  application.name: gateway
  cloud:
    gateway:
      discovery:
        locator:
          enabled: true
    kubernetes:
      reload:
        enabled: true
server:
  port: 8080
logging:
  level:
    org.springframework.cloud.gateway: TRACE
    org.springframework.cloud.loadbalancer: TRACE
management:
  endpoints:
    web:
      exposure:
        include: '*'
  endpoint:
    health:
      enabled: true
    info:
      enabled: true

DemoApplication.java

package com.example.gateway;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import java.util.List;

@SpringBootApplication
@EnableDiscoveryClient
@RestController
public class DemoApplication {

    @Autowired
    private DiscoveryClient discoveryClient;
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

    @GetMapping("/services")
    public List<String> services() {
      return this.discoveryClient.getServices();
    }
}

Spring 云网关无法将请求重定向到其他服务。正在打印的日志是

2019-10-13 18:29:38.303 TRACE 1 --- [or-http-epoll-2] o.s.c.g.f.WeightCalculatorWebFilter : Weights attr: {} 2019-10-13 18:29:38.305 TRACE 1 --- [or-http-epoll-2] o.s.c.g.h.RoutePredicateHandlerMapping : No RouteDefinition found for [Exchange: GET http://gateway-url/service-name/hello]

虽然当我调用http://<gateway-url>/services时，我可以看到所有服务的列表。所以所有权限都是在 pod 级别提供的，服务发现工作正常。我很确定有一些配置，我错过了，但即使在多次查看文档后我也无法弄清楚。

Answer 1

因此，Spring Cloud Hoxton.M3 版本 中似乎存在问题，因为它在 Hoxton.M2[ 上运行良好=17=].

我已经打开了一个 issue 同样的。

Spring Kubernetes 服务发现中的云网关配置问题

Spring cloud gateway configuration issue in Kubernetes service discovery

kubernetes

spring-cloud

spring-cloud-gateway