java.net.UnknownHostException：无法解析“库存微服务”。超过每个解析的最大查询数3

Question

我正在尝试运行以下vertx教程，但遇到此异常。

http://www.sczyh30.com/vertx-blueprint-microservice/index.html

我已经尝试只运行单个服务或整个项目，但异常也一样。

我缺少任何码头工人设置吗？

            ov 03, 2016 10:35:55 PM io.vertx.core.impl.launcher.commands.VertxIsolatedDeployer
            cache-infrastructure_1    | INFO: Succeeded in deploying verticle
            inventory-microservice_1  | java.net.UnknownHostException: failed to resolve 'inventory-microservice'. Exceeded max queries per resolve 3 
            inventory-microservice_1  |     at io.netty.resolver.dns.DnsNameResolverContext.finishResolve(DnsNameResolverContext.java:476)
            inventory-microservice_1  |     at io.netty.resolver.dns.DnsNameResolverContext.tryToFinishResolve(DnsNameResolverContext.java:398)
            inventory-microservice_1  |     at io.netty.resolver.dns.DnsNameResolverContext$3.operationComplete(DnsNameResolverContext.java:193)
            inventory-microservice_1  |     at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:514)
            inventory-microservice_1  |     at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:488)
            inventory-microservice_1  |     at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:427)
            inventory-microservice_1  |     at io.netty.util.concurrent.DefaultPromise.setSuccess(DefaultPromise.java:102)
            inventory-microservice_1  |     at io.netty.resolver.dns.DnsQueryContext.setSuccess(DnsQueryContext.java:195)
            inventory-microservice_1  |     at io.netty.resolver.dns.DnsQueryContext.finish(DnsQueryContext.java:178)
            inventory-microservice_1  |     at io.netty.resolver.dns.DnsNameResolver$DnsResponseHandler.channelRead(DnsNameResolver.java:694)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
            inventory-microservice_1  |     at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
            inventory-microservice_1  |     at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
            inventory-microservice_1  |     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
            inventory-microservice_1  |     at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
            inventory-microservice_1  |     at io.netty.channel.nio.AbstractNioMessageChannel$NioMessageUnsafe.read(AbstractNioMessageChannel.java:93)
            inventory-microservice_1  |     at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:610)
            inventory-microservice_1  |     at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:551)
            inventory-microservice_1  |     at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:465)
            inventory-microservice_1  |     at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:437)
            inventory-microservice_1  |     at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)
            inventory-microservice_1  |     at java.lang.Thread.run(Thread.java:745)

Answer 1

经过大量调试，最终我发现vertx的最新版本有解决主机的问题。因此，通过此选项，我们可以禁用disableDnsResolver（默认情况下为ON）。对我来说很好

CMD ["java -Dvertx.disableDnsResolver=true -jar account-microservice-fat.jar -cluster -conf docker.json"]

如果尝试运行以上示例，则需要在每个微服务的DockerFile中添加-Dvertx.disableDnsResolver = true