4
使用'Camden.SR5'实现弹簧云依赖关系，并且弹簧引导'1.5.2.RELEASE'。弹簧云Zuul在实例关闭时重试并转发到其他可用实例
在我目前的设置，我有
- 尤里卡服务器
- 配置服务器（随机端口上运行）
- zuul网关服务器
- 和服务的两个实例（随机端口上运行）
所有这些实例都成功注册Eureka。
当所有的服务都在运行，负载均衡是通过正确zuul没有任何问题的完成。
当一个实例被杀时，Zuul仍然试图使用相同的服务来完成请求。然而，如果在关闭实例之后等待直到尤里卡注册表被取回，那么请求会被其他“UP”实例满足。
2017-03-07 19:57:41.409 DEBUG 26658 --- [nio-5555-exec-3] c.n.l.reactive.LoadBalancerCommand : Got error org.apache.http.conn.HttpHostConnectException: Connect to 10.99.4.151:64381 [/10.99.4.151] failed: Connection refused when executed on server 10.99.4.151:64381
2017-03-07 19:57:41.420 DEBUG 26658 --- [nio-5555-exec-3] com.netflix.hystrix.AbstractCommand : Error executing HystrixCommand.run(). Proceeding to fallback logic ...
com.netflix.client.ClientException: null
at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:123) ~[ribbon-loadbalancer-2.2.0.jar:2.2.0]
at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:81) ~[ribbon-loadbalancer-2.2.0.jar:2.2.0]
at org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand.run(AbstractRibbonCommand.java:96) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand.run(AbstractRibbonCommand.java:42) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ~[httpclient-4.5.3.jar:4.5.3]
... 162 common frames omitted
2017-03-07 19:57:41.425 DEBUG 26658 --- [nio-5555-exec-3] com.netflix.hystrix.AbstractCommand : No fallback for HystrixCommand.
java.lang.UnsupportedOperationException: No fallback available.
at com.netflix.hystrix.HystrixCommand.getFallback(HystrixCommand.java:292) [hystrix-core-1.5.6.jar:1.5.6]
at org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand.getFallback(AbstractRibbonCommand.java:117) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand.getFallback(AbstractRibbonCommand.java:42) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_66]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar:8.5.11]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_66]
2017-03-07 19:57:41.428 WARN 26658 --- [nio-5555-exec-3] o.s.c.n.z.filters.post.SendErrorFilter : Error during filtering
com.netflix.zuul.exception.ZuulException: Forwarding error
at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.handleException(RibbonRoutingFilter.java:170) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.forward(RibbonRoutingFilter.java:145) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.run(RibbonRoutingFilter.java:88) ~[spring-cloud-netflix-core-1.2.5.RELEASE.jar:1.2.5.RELEASE]
以下是与@EnableZuulProxy和@EnableEurekaClient
server:
port: 5555
spring:
application:
name: gateway-server
cloud:
config:
discovery:
enabled: true
service-id: CONFIGSERVER
fail-fast: true
retry:
multiplier: 1.1
initial-interval: 1000
max-attempts: 6
max-interval: 2000
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 100000
timeout:
enabled: false
ribbon:
ReadTimeout: 5000
ConnectTimeout: 3000
maxAutoRetries: 1
MaxAutoRetriesNextServer: 2
OkToRetryOnAllOperations: true
logging:
level:
ROOT: DEBUG
zuul:
routes:
security-service:
retryable: true
使用的zuul配置个
与服务的两个实例都具有独特的实例IDS
@EnableEurekaClient
@EnableHystrix
@SpringBootApplication
public class SecurityServer implements HealthIndicator{
public static void main(String args[])
{
SpringApplication.run(SecurityServer.class,args);
}
@Override
public Health health() {
return Health.up().withDetail("STATUS", "SUCCESS").build();
}
}
instanceId: ${spring.cloud.client.hostname}:${spring.application.name}:${spring.application.instance_id:${random.uuid}}
你能帮助我的zuul &实例配置下运行，使请求将被自动转发到当一个实例出现故障时其他可用的实例。