无法检索请求的元数据 /latest/meta-data/public-hostname

Question

我正在为 AWS Kinesis 部署带有 spring-cloud-stream 和 binder 的 springboot 应用程序。如果 beanstalk 配置了公共 ip，则该应用程序在部署在 aws elastic beanstalk 上时工作正常。当我们将 beanstalk 设置为私有 ip 时，应用程序会在部署时抛出警告，因为无法从 aws 获取一些元数据。

为什么要尝试获取这些资源？有一些解决方法可以删除此警告吗？

这些是在部署应用程序并且没有在 ec2 上设置公共 ip 时抛出的警告。

 com.amazonaws.util.EC2MetadataUtils      : Unable to retrieve the requested metadata (/latest/meta-data/public-ipv4). The requested metadata is not found at http://169.254.169.254/latest/meta-data/public-ipv4

com.amazonaws.SdkClientException: The requested metadata is not found at http://169.254.169.254/latest/meta-data/public-ipv4
        at com.amazonaws.internal.EC2CredentialsUtils.readResource(EC2CredentialsUtils.java:122)
        at com.amazonaws.internal.EC2CredentialsUtils.readResource(EC2CredentialsUtils.java:82)
        at com.amazonaws.util.EC2MetadataUtils.getItems(EC2MetadataUtils.java:400)
        at com.amazonaws.util.EC2MetadataUtils.getData(EC2MetadataUtils.java:369)
        at com.amazonaws.util.EC2MetadataUtils.getData(EC2MetadataUtils.java:365)
        at org.springframework.cloud.aws.core.env.ec2.AmazonEc2InstanceDataPropertySource.getProperty(AmazonEc2InstanceDataPropertySource.java:89)
        at org.springframework.cloud.bootstrap.encrypt.EnvironmentDecryptApplicationInitializer.collectEncryptedProperties(EnvironmentDecryptApplicationInitializer.java:199)
        at org.springframework.cloud.bootstrap.encrypt.EnvironmentDecryptApplicationInitializer.decrypt(EnvironmentDecryptApplicationInitializer.java:166)
        at org.springframework.cloud.bootstrap.encrypt.EnvironmentDecryptApplicationInitializer.initialize(EnvironmentDecryptApplicationInitializer.java:96)
        at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:649)
        at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:373)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
        at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:139)
        at org.springframework.cloud.stream.binder.DefaultBinderFactory.getBinderInstance(DefaultBinderFactory.java:250)
        at org.springframework.cloud.stream.binder.DefaultBinderFactory.doGetBinder(DefaultBinderFactory.java:174)
        at org.springframework.cloud.stream.binder.DefaultBinderFactory.getBinder(DefaultBinderFactory.java:120)
        at org.springframework.cloud.stream.binding.BindingService.getBinder(BindingService.java:313)
        at org.springframework.cloud.stream.binding.BindingService.bindProducer(BindingService.java:214)
        at org.springframework.cloud.stream.binding.BindableProxyFactory.createAndBindOutputs(BindableProxyFactory.java:262)
        at org.springframework.cloud.stream.binding.OutputBindingLifecycle.doStartWithBindable(OutputBindingLifecycle.java:55)
        at java.util.LinkedHashMap$LinkedValues.forEach(LinkedHashMap.java:608)
        at org.springframework.cloud.stream.binding.AbstractBindingLifecycle.start(AbstractBindingLifecycle.java:47)
        at org.springframework.cloud.stream.binding.OutputBindingLifecycle.start(OutputBindingLifecycle.java:34)
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
        at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53)
        at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360)
        at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158)
        at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122)
        at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:893)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:157)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:137)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91)
        at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:171)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5225)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1135)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1869)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

com.amazonaws.util.EC2MetadataUtils      : Unable to retrieve the requested metadata (/latest/meta-data/public-hostname). The requested metadata is not found at http://169.254.169.254/latest/meta-data/public-hostname

com.amazonaws.SdkClientException: The requested metadata is not found at http://169.254.169.254/latest/meta-data/public-hostname
        at com.amazonaws.internal.EC2CredentialsUtils.readResource(EC2CredentialsUtils.java:122)
        at com.amazonaws.internal.EC2CredentialsUtils.readResource(EC2CredentialsUtils.java:82)
        at com.amazonaws.util.EC2MetadataUtils.getItems(EC2MetadataUtils.java:400)
        at com.amazonaws.util.EC2MetadataUtils.getData(EC2MetadataUtils.java:369)
        at com.amazonaws.util.EC2MetadataUtils.getData(EC2MetadataUtils.java:365)
        at org.springframework.cloud.aws.core.env.ec2.AmazonEc2InstanceDataPropertySource.getProperty(AmazonEc2InstanceDataPropertySource.java:89)
        at org.springframework.cloud.bootstrap.encrypt.EnvironmentDecryptApplicationInitializer.collectEncryptedProperties(EnvironmentDecryptApplicationInitializer.java:199)
        at org.springframework.cloud.bootstrap.encrypt.EnvironmentDecryptApplicationInitializer.decrypt(EnvironmentDecryptApplicationInitializer.java:166)
        at org.springframework.cloud.bootstrap.encrypt.EnvironmentDecryptApplicationInitializer.initialize(EnvironmentDecryptApplicationInitializer.java:96)
        at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:649)
        at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:373)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
        at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:139)
        at org.springframework.cloud.stream.binder.DefaultBinderFactory.getBinderInstance(DefaultBinderFactory.java:250)
        at org.springframework.cloud.stream.binder.DefaultBinderFactory.doGetBinder(DefaultBinderFactory.java:174)
        at org.springframework.cloud.stream.binder.DefaultBinderFactory.getBinder(DefaultBinderFactory.java:120)
        at org.springframework.cloud.stream.binding.BindingService.getBinder(BindingService.java:313)
        at org.springframework.cloud.stream.binding.BindingService.bindProducer(BindingService.java:214)
        at org.springframework.cloud.stream.binding.BindableProxyFactory.createAndBindOutputs(BindableProxyFactory.java:262)
        at org.springframework.cloud.stream.binding.OutputBindingLifecycle.doStartWithBindable(OutputBindingLifecycle.java:55)
        at java.util.LinkedHashMap$LinkedValues.forEach(LinkedHashMap.java:608)
        at org.springframework.cloud.stream.binding.AbstractBindingLifecycle.start(AbstractBindingLifecycle.java:47)
        at org.springframework.cloud.stream.binding.OutputBindingLifecycle.start(OutputBindingLifecycle.java:34)
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
        at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53)
        at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360)
        at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158)
        at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122)
        at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:893)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:157)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:137)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91)
        at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:171)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5225)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1135)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1869)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

Answer 1

此异常发生在 Amazon SDK 中。如果您只是不喜欢堆栈跟踪，您可以更新您的日志记录配置以仅在 com.amazonaws 的 ERROR 级别报告。如果您不需要正在运行的 EC2 实例的任何实例数据，您可以添加或更新注释

@EnableAutoConfiguration(exclude = {ContextInstanceDataAutoConfiguration.class})

在您的配置类之一上。