Add a SpringBootAdmin monitoring

2.1 create Spring Boot Admin server

In the manager directory, create a monitor directory, and create a monitor directory pom.xml File, add the following:

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <artifactId>monitor</artifactId> <version>$</version> <packaging>jar</packaging> <parent> <artifactId>manager</artifactId> <groupId>club.attachie</groupId> <version>$</version> </parent> </project>

In manager/pom.xml Register our new project module:

<modules> <module>gateway</module> <module>monitor</module> </modules>

Create the following directory in monitor:

. ├── pom.xml └── src └── main ├── java └── resources

At the root pom.xml To add a Spring Boot Admin dependency:

First add the spring boot admin version number variable:

<spring-boot-admin.version>2.2.3</spring-boot-admin.version>

And under dependency Management > dependencies, add:

<dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> <version>$</version> </dependency>

In monitor/pom.xml Add to file:

<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> </dependency> </dependencies>

function

mvn clean install

Check and brush the mvn reference cache.

Create the MonitorApplication class:

package club.attachie.nature.monitor; import de.codecentric.boot.admin.server.config.EnableAdminServer; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @EnableAdminServer public class MonitorApplication { public static void main(String[] args) { SpringApplication.run(MonitorApplication.class, args); } }

After startup, you can see the following interface:

3 interworking with gateway service

In the previous article, we added the Spring Cloud Gateway project. So far, the two projects are completely separated and unrelated. In this section, we build a connection between the two. In other words, introduce the gateway project into Spring Admin Boot listening.

In the manager/gateway pom.xml The following references are included in the document:

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency>

Then modify the startup port of the gateway project, in resources/bootstrap.yml add to:

server: port: 8070

Add nacos reference to monitor:

<dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency>

Modify MonitorApplication to:

package club.attachie.nature.monitor; import de.codecentric.boot.admin.server.config.EnableAdminServer; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.context.config.annotation.RefreshScope; @SpringBootApplication @EnableAdminServer @RefreshScope public class MonitorApplication { public static void main(String[] args) { SpringApplication.run(MonitorApplication.class, args); } }

Create the bootsrap.yml :

spring: application: name: monitor cloud: nacos: discovery: server-addr: 127.0.0.1:8848

There is an error about the configuration here in the previous article. It should be discovery > server addr, not config > server addr. There is a difference between the two. Discovery indicates that nacos is set as the service discovery center, and config indicates that nacos is set as the configuration center.

Start the gateway project and the monitor project to see the effect. Visit port 8080:

It can be seen that two applications can be found. If nacos is not set as the service discovery center in the monitor project, the specific online applications will not be obtained. Click gateway to view:

4. Summary

We have built a Spring Boot Admin project as a monitoring system, and will add more content here later.

Please pay attention to more My blog Mr. Gao's Cabin

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