java - Spring 启动执行器中的 Elasticsearch 运行状况检查有时会返回状态

Question

我们有一个spring-boot(2.0.2)应用程序，该应用程序使用启用了运行状况执行器的 flex 搜索(6.2.4)来使用传输客户端进行crud操作。
我们还有一个监控系统，每3分钟会命中一次运行状况执行器，并在服务中断时发出警报。
该监控应用程序每天发出6到8次警报，提示ElasticSearch发生超时异常。警报每天随机触发，没有任何模式。

我找到了这些链接，但没有用。 link1，link2和link3

有谁知道为什么会这样吗？

这是运行状况检查时应用程序的日志

2020-03-18 21:18:12.048 WARN 3924 --- [nio-8082-exec-5] o.s.b.a.e.ElasticsearchHealthIndicator : Elasticsearch health check failed

org.elasticsearch.ElasticsearchTimeoutException: java.util.concurrent.TimeoutException: Timeout waiting for task.
 at org.elasticsearch.action.support.AdapterActionFuture.actionGet(AdapterActionFuture.java:71)
 at org.elasticsearch.action.support.AdapterActionFuture.actionGet(AdapterActionFuture.java:58)
 at org.springframework.boot.actuate.elasticsearch.ElasticsearchHealthIndicator.doHealthCheck(ElasticsearchHealthIndicator.java:80)
 at org.springframework.boot.actuate.health.AbstractHealthIndicator.health(AbstractHealthIndicator.java:84)
 at org.springframework.boot.actuate.health.CompositeHealthIndicator.health(CompositeHealthIndicator.java:68)
 at org.springframework.boot.actuate.health.HealthEndpointWebExtension.getHealth(HealthEndpointWebExtension.java:50)
 at sun.reflect.GeneratedMethodAccessor76.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:223)
 at org.springframework.boot.actuate.endpoint.invoke.reflect.ReflectiveOperationInvoker.invoke(ReflectiveOperationInvoker.java:76)
 at org.springframework.boot.actuate.endpoint.annotation.AbstractDiscoveredOperation.invoke(AbstractDiscoveredOperation.java:61)
 at org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$ServletWebOperationAdapter.handle(AbstractWebMvcEndpointHandlerMapping.java:243)
 at org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(AbstractWebMvcEndpointHandlerMapping.java:299)
 at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209)
 at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
 at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:877)
 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:783)
 at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
 at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991)
 at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
 at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
 at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
 at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:158)
 at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:126)
 at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:111)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:84)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
 at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
 at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
 at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)
 at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.TimeoutException: Timeout waiting for task.
 at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.get(BaseFuture.java:232)
 at org.elasticsearch.common.util.concurrent.BaseFuture.get(BaseFuture.java:67)
 at org.elasticsearch.action.support.AdapterActionFuture.actionGet(AdapterActionFuture.java:69)
 ... 76 common frames omittedctionFuture.Á'

Answer 1

我遇到了同样的问题，然后检查正在运行的ElasticSearch日志。
如下:

[2020-08-02T15:09:51,553][INFO ][o.e.m.j.JvmGcMonitorService] [5T9fWYh] [gc][965239] overhead, spent [377ms] collecting in the last [1s]

查看springboot-actuator的原理，我发现了一个重要的参数: management.health.elasticsearch.response-timeout。
此参数指示监视程序将心跳发送到 ElasticSearch群集所允许的最大响应时间。
如果在发送心跳并延迟响应时 ElasticSearch JVM正在执行垃圾回收，则会出现带有 TimeoutException的 ElasticSearch。此参数的默认值为 100ms ，因此该值必须设置为至少超过minic的时间。
示例: management.health.elasticsearch.response-timeout=1s。
有另一种解决方法，但这不是一个好的解决方案，它包括关闭执行器的 ElasticSearch --> Management --> Health --> ElasticSearch enabled: false的运行状况检查。
或者，您可以调整 JVM。
希望我的经验能对您有所帮助