Springboot of Grafana+prometheus system monitoring

Objective

A time ago, a Webhook project was created using Springboot, and as a result of recent projects, a number of springboot related projects were used, while the weekend was configured to use Prometheus to monitor micro-service springboot.

Project configuration Introduction coordinates

<!--exposition Spring_boot --<dependency>    <groupId>Io.prometheus</groupId>    <artifactId>Simpleclient_spring_boot</artifactId>    <version>0.1.0</version></dependency><!--Hotspot JVM metrics --<dependency>    <groupId>Io.prometheus</groupId>    <artifactId>Simpleclient_hotspot</artifactId>    <version>0.1.0</version></dependency><!--exposition servlet ---<dependency>    <groupId>Io.prometheus</groupId>    <artifactId>Simpleclient_servlet</artifactId>    <version>0.1.0</version></dependency>

Configure Application

@SpringBootApplication@EnablePrometheusEndpoint@EnableSpringBootMetricsCollectorpublicclass Application  {    privatestaticfinal Logger logger = LoggerFactory.getLogger(Application.class);    publicstaticvoidmainthrows InterruptedException {        SpringApplication.run(Application.class, args);        logger.info("项目启动 ");    }}

Configure Monitoringconfig

 @Configuration  class  monitoringconfig { @Bean  springbootmetricscollector  (collection<publicmetrics> publicmetrics) {springbootmetricscollector spri Ngbootmetricscollector = new  springbootmetricscollector  ( Publicmetrics); Springbootmetricscollector. register  (); return  springbootmetricscollector; }  @Bean  servletregistrationbean servletregistrationbean  () {D Efaultexports. initialize  (); return  new  servletregistrationbean  (new  metricsservlet  (), ); }}

Configure Interceptor

Requestcounterinterceptor (count):

 Public classRequestcounterinterceptorextendsHandlerinterceptoradapter {//@formatter: Off    //Note (1)    Private Static FinalCounter requesttotal = Counter.Build()         .name("Http_requests_total")         .Labelnames("Method","Handler","Status")         . Help("Http Request Total").Register();//@formatter: on    @Override     Public void aftercompletion(HttpServletRequest request, httpservletresponse response, Object handler, Exception e)throwsException {//Update countersString Handlerlabel = handler.toString();//Get short form of handler method name         if(HandlerinstanceofHandlermethod) {Method method = ((Handlermethod) handler).GetMethod(); Handlerlabel = method.Getdeclaringclass().Getsimplename() +"."+ method.GetName(); }//Note (2)Requesttotal.Labels(Request.GetMethod(), Handlerlabel, Integer.toString(Response.GetStatus())).Inc(); }}

Requesttiminginterceptor (Statistical request time):

Package Com.itstyle.webhook.interceptor;import Java.lang.reflect.Method;import javax.servlet.http.HttpServletRequest;import Javax.servlet.http.HttpServletResponse;import io.prometheus.client.Summary;import Org.springframework.web.method.HandlerMethod;import Org.springframework.web.servlet.handler.HandlerInterceptorAdapter; Public classRequesttiminginterceptorextendsHandlerinterceptoradapter {Private Static FinalString req_param_timing ="Timing";//@formatter: Off    //Note (1)    Private Static FinalSummary Responsetimeinms = Summary.Build()         .name("Http_response_time_milliseconds")         .Labelnames("Method","Handler","Status")         . Help("Request completed time in milliseconds")         .Register();//@formatter: on    @Override     Public Boolean Prehandle(HttpServletRequest request, httpservletresponse response, Object handler)throwsException {//Note (2)Request.SetAttribute(Req_param_timing, System.)Currenttimemillis());return true; }@Override     Public void aftercompletion(HttpServletRequest request, httpservletresponse response, Object handler, Exception ex)throwsException {Long timingattr = (long) request.getattribute(req_param_timing);LongCompletedtime = System.Currenttimemillis()-timingattr; String Handlerlabel = handler.toString();//Get short form of handler method name         if(HandlerinstanceofHandlermethod) {Method method = ((Handlermethod) handler).GetMethod(); Handlerlabel = method.Getdeclaringclass().Getsimplename() +"."+ method.GetName(); }//Note (3)Responsetimeinms.Labels(Request.GetMethod(), Handlerlabel, Integer.toString(Response.GetStatus())).Observe(Completedtime); }}

Configuring the Controller

Mainly to test the effectiveness of the Interceptor.

@RestController Public classHomeController {Private Static FinalLogger Logger = loggerfactory.GetLogger(HomeController.class);@RequestMapping("/endpointa") Public void Handlera()throwsinterruptedexception {logger.Info("/endpointa"); Thread.Sleep(Randomutils.Nextlong(0, -)); }@RequestMapping("/ENDPOINTB") Public void Handlerb()throwsinterruptedexception {logger.Info("/ENDPOINTB"); Thread.Sleep(Randomutils.Nextlong(0, -)); }}

The above are configured to start the project after completion.

Configure Prometheus

VI prometheus.yml

  -job_name: webhook    metrics_path:‘/prometheus‘    static_configs:     -targets:[‘localhost:8080‘]       labels:         instance: webhook

After saving, restart Prometheus.

Access to the Http://ip/targets service state for up instructions is configured successfully, and many tutorials refer to the need to configure Spring.metrics.servo.enabled=false, Otherwise in the Prometheus console of the Targets tab, will always show this endpoint as down state, but it seems that there is no configuration is OK.

Visit Http://ip/graph Test the effect

Configure Grafana

：

Reference links

https://blog.52itstyle.com/archives/1984/

https://blog.52itstyle.com/archives/2084/

https://raymondhlee.wordpress.com/2016/09/24/monitoring-spring-boot-applications-with-prometheus/

https://raymondhlee.wordpress.com/2016/10/03/monitoring-spring-boot-applications-with-prometheus-part-2/

Springboot of Grafana+prometheus system monitoring