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This article focuses on "how to use SpringBoot admin+Eureka+ nail notification to achieve micro-service monitoring", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "how to use SpringBoot admin+Eureka+ nail notification to achieve micro-service monitoring"!

Notice of SpringBoot admin+Eureka+ nailing I. effect

Login account + password

Monitoring service

View real-time logs

Nailing notice

What is Spring Boot Admin?

SpringBoot Admin is an open source community project for managing and monitoring SpringBoot applications. The application is discovered as a Spring Boot Admin Client to register for Spring Boot Admin Server (through HTTP) or to use a SpringCloud registry (such as Eureka,Consul). UI is a Vue.js application that shows some monitoring on the Actuator endpoint of Spring Boot Admin Client. The server uses Spring WebFlux + Netty mode. Spring Boot Admin provides the following functions for registered applications:

Show your health.

Display details, such as

JVM and memory metrics

Micrometer.io index

Data source index

Cache index

Show build information number

Follow and download log files

View jvm system- and environment-properties

View Spring Boot configuration properties

Postable / env- and / refresh-endpoint supporting Spring Cloud

Easy log-level management

Interact with JMX-beans

View thread dump

View http-traces

View auditevents

View http-endpoints

View scheduled tasks

View and delete active sessions (using spring-session)

View Flyway / Liquibase database migration

Download heapdump

Status change notification (via email, Slack,Hipchat,.)

Event log for state changes (non-persistent)

Third, principle

Monitoring applications using Spring Boot Actuator

4. Integrated Eureka registry 1. Create eureka-server and google2 by yourself. Create spring-boot-admin

This is a Spring Boot Admin Server side.

Pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.1.6.RELEASE jar spring-boot-admin spring-boot-admin Spring Boot Admin Server side 1.8 2.1.6 Greenwich.RELEASE org.springframework.boot spring-boot-starter-web De.codecentric spring-boot-admin-starter-server org.springframework.cloud spring-cloud-starter-netflix-eureka-client org.springframework.boot spring-boot-starter-test test org.springframework.boot Spring-boot-starter-security org.jolokia jolokia-core org.springframework.cloud spring-cloud-dependencies ${spring-cloud.version} pom import De.codecentric spring-boot-admin-dependencies ${spring-boot-admin.version} pom import org.springframework.boot spring-boot-maven-plugin application. Ymlspring: application: name: admin-serverserver: port: 1300eureka: client: registryFetchIntervalSeconds: 5 service-url: defaultZone: ${EUREKA_SERVICE_URL: http://localhost:8761}/eureka/ instance: leaseRenewalIntervalInSeconds: 10 health-check-url-path: / actuator/healthmanagement: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYS launch class SpringbootAdminServerApplication@ SpringBootApplication@EnableAdminServer@EnableEurekaClientpublic class ScAdminServerApplication {public static void main (String [] args) {SpringApplication.run (ScAdminServerApplication.class) Args) }} 3. Monitored end

The monitored end needs to release the endpoint.

Application.ymlspring: application: name: admin-clienteureka: instance: leaseRenewalIntervalInSeconds: 10 health-check-url-path: / actuator/health client: registryFetchIntervalSeconds: 5 service-url: defaultZone: ${EUREKA_SERVICE_URL: http://localhost:8761}/eureka/management: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYSserver: port: 8762

Admin will pull the information registered on Eureka and register on its own initiative.

5. Integrate Spring Security

There are several ways to authenticate and authorize in Web applications, so Spring Boot Admin does not provide default methods. By default, spring-boot-admin-server-ui provides a login page and a logout button. We use Spring Security to implement security authentication that requires a user name and password to log in.

The pom file of the springboot-admin project needs to add the following dependencies:

Org.springframework.boot spring-boot-starter-security

Configure the user name and password of spring security in the spirngboot-admin worker's configuration file application.yml. You need to bring the metadata-map information when registering the service, as follows:

Spring: security: user: name: "admin" password: "admin" eureka: instance: metadata-map: user.name: ${spring.security.user.name} user.password: ${spring.security.user.password} startup: ${random.int} # needed to trigger info and endpoint update after restart

Write a configuration class SecuritySecureConfig that inherits WebSecurityConfigurerAdapter. The configuration is as follows:

/ * security configuration * @ author wangjiafang * @ date 2019-10-10 * / @ Configurationpublic class SecuritySecureConfig extends WebSecurityConfigurerAdapter {private final String adminContextPath; public SecuritySecureConfig (AdminServerProperties adminServerProperties) {this.adminContextPath = adminServerProperties.getContextPath ();} @ Override protected void configure (HttpSecurity http) throws Exception {/ / @ formatter:off SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler (); successHandler.setTargetUrlParameter ("redirectTo"); successHandler.setDefaultTargetUrl (adminContextPath + "/") Http.authorizeRequests () .antMatrices (adminContextPath + "/ assets/**"). PermitAll () .antMatrices (adminContextPath + "/ login"). PermitAll () .anyRequest (). Authenticated () .and () .formLogin (). LoginPage (adminContextPath + "/ login"). LoginPage (successHandler). And () .logout () .logoutUrl (adminContextPath + "/ logout") .and () .httpBasic () .csrf () .csrfTokenRepository (CookieCsrfTokenRepository.withHttpOnlyFalse ()). New AntPathRequestMatcher (adminContextPath + "/ instances") HttpMethod.POST.toString (), new AntPathRequestMatcher (adminContextPath + "/ instances/*", HttpMethod.DELETE.toString ()), new AntPathRequestMatcher (adminContextPath + "/ actuator/**")) / / @ formatter:on}}

The login screen will appear when you revisit http:localhost:1300. The password is configured in the configuration file. The account admin password is admin.

Notification Custom Notification + nailing Notification

1. Create a nailing robot, get the token, and how to create a nailing robot. Please google2 and download sdk.

Nail officially provides a unified SDK. Using SDK, you can easily call the server API, but it is not put in the public maven repository. You need to download it and import it into the project, or upload it to your own built nexus private server.

3. Custom notifier

By extending AbstractEventNotifier or AbstractStatusChangeNotifier. Write a custom notifier in the springboot-admin-server project:

Import com.dingtalk.api.DefaultDingTalkClient;import com.dingtalk.api.DingTalkClient;import com.dingtalk.api.request.OapiRobotSendRequest;import com.taobao.api.ApiException;import de.codecentric.boot.admin.server.domain.entities.Instance;import de.codecentric.boot.admin.server.domain.entities.InstanceRepository;import de.codecentric.boot.admin.server.domain.events.InstanceEvent;import de.codecentric.boot.admin.server.domain.events.InstanceStatusChangedEvent;import de.codecentric.boot.admin.server.notify.AbstractEventNotifier;import lombok.extern.slf4j.Slf4j Import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;import reactor.core.publisher.Mono;/** * nailing Notification * @ author wangjiafang * @ date 2019-10-10 * / @ Component@Slf4jpublic class CustomNotifier extends AbstractEventNotifier {/ * message template * / private static final String template = "Service name:% s (% s)\ nstatus:% s (% s)\ nService ip:%s" @ Value ("${spring.admin.ding-talk-token}") private String dingTalkToken; public CustomNotifier (InstanceRepository repository) {super (repository) } @ Override protected Mono doNotify (InstanceEvent event, Instance instance) {return Mono.fromRunnable (()-> {if (event instanceof InstanceStatusChangedEvent) {log.info ("Instance {} ({}) is {}", instance.getRegistration () .getName (), event.getInstance (), ((InstanceStatusChangedEvent) event) .getStatusInfo () .getStatus ()) String status = ((InstanceStatusChangedEvent) event) .getStatusInfo () .getStatus (); String messageText = null; switch (status) {/ / the health check failed case "DOWN": log.info ("send notification of failure of health check!") ; messageText = String.format (template, instance.getRegistration (). GetName (), event.getInstance (), ((InstanceStatusChangedEvent) event). GetStatusInfo (). GetStatus (), "failed health check", instance.getRegistration (). GetServiceUrl (); this.sendMessage (messageText); break / / Service offline case "OFFLINE": log.info ("send notification of service offline!") ; messageText = String.format (template, instance.getRegistration (). GetName (), event.getInstance (), ((InstanceStatusChangedEvent) event). GetStatusInfo (). GetStatus (), "Service offline", instance.getRegistration (). GetServiceUrl (); this.sendMessage (messageText); break / / case "UP": log.info ("send notification of service launch!") ; messageText = String.format (template, instance.getRegistration (). GetName (), event.getInstance (), ((InstanceStatusChangedEvent) event). GetStatusInfo (). GetStatus (), "Service online", instance.getRegistration (). GetServiceUrl (); this.sendMessage (messageText); break / / Service unknown exception case "UNKNOWN": log.info ("send notification of service unknown exception!") ; messageText = String.format (template, instance.getRegistration () .getName (), event.getInstance (), ((InstanceStatusChangedEvent) event) .getStatusInfo () .getStatus (), "Service unknown exception", instance.getRegistration () .getServiceUrl (); this.sendMessage (messageText); break; default: break }} else {log.info ("Instance {} ({}) {}", instance.getRegistration () .getName (), event.getInstance (), event.getType ());}}) } / * send message * @ param messageText * / private void sendMessage (String messageText) {DingTalkClient client = new DefaultDingTalkClient ("https://oapi.dingtalk.com/robot/send?access_token="+dingTalkToken); OapiRobotSendRequest request = new OapiRobotSendRequest (); request.setMsgtype (" text "); OapiRobotSendRequest.Text text = new OapiRobotSendRequest.Text (); text.setContent (messageText)) Request.setText (text); try {client.execute (request);} catch (ApiException e) {log.info ("[ERROR] sendMessage", e);} 7 View Real-time Log

To view real-time logs in the springbootadmin panel, you need to specify the address of the log output in the project, for example, my log is under / logs/ project name / project name-info.log

Logging: file: / logs/$ {spring.application.name} / ${spring.application.name}-info.log here, I believe you have a better understanding of "how to use SpringBoot admin+Eureka+ nail notification to achieve microservice monitoring". You might as well do it in practice! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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