Spring Boot Admin 服務追蹤

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概述

隨著開發(fā)周期的推移，項目會不斷變大，切分出的服務也會越來越多汪茧，這時一個個的微服務構成了錯綜復雜的系統(tǒng)。對于各個微服務系統(tǒng)的健康狀態(tài)限番、會話數(shù)量舱污、并發(fā)數(shù)、服務資源弥虐、延遲等度量信息的收集就成為了一個挑戰(zhàn)扩灯。Spring Boot Admin 應運而生媚赖，它正式基于這些需求開發(fā)出的一套功能強大的監(jiān)控管理系統(tǒng)。

Spring Boot Admin 有兩個角色組成珠插，一個是 Spring Boot Admin Server惧磺，一個是 Spring Boot Admin Client，本章節(jié)將帶領大家實現(xiàn) Spring Boot Admin 的搭建丧失。

Spring Boot Admin 服務端

本節(jié)視頻

【視頻】微服務框架-SpringCloud-服務監(jiān)控-服務端

創(chuàng)建 Spring Boot Admin Server

創(chuàng)建一個工程名為 hello-spring-cloud-admin 的項目豺妓，pom.xml 文件如下：

<?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>

    <parent>
        <groupId>com.funtl</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../hello-spring-cloud-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>hello-spring-cloud-admin</artifactId>
    <packaging>jar</packaging>

    <name>hello-spring-cloud-admin</name>
    <url>http://www.funtl.com</url>
    <inceptionYear>2018-Now</inceptionYear>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.jolokia</groupId>
            <artifactId>jolokia-core</artifactId>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-starter-server</artifactId>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <!-- Spring Cloud End -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.funtl.hello.spring.cloud.admin.AdminApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

主要增加了 2 個依賴，org.jolokia:jolokia-core布讹、de.codecentric:spring-boot-admin-starter-server

<dependency>
    <groupId>org.jolokia</groupId>
    <artifactId>jolokia-core</artifactId>
</dependency>
<dependency>
    <groupId>de.codecentric</groupId>
    <artifactId>spring-boot-admin-starter-server</artifactId>
</dependency>

其中 spring-boot-admin-starter-server 的版本號為：2.0.0琳拭，這里沒寫版本號是因為我已將版本號托管到 dependencies 項目中

Application

通過 @EnableAdminServer 注解開啟 Admin 功能

package com.funtl.hello.spring.cloud.admin;

import de.codecentric.boot.admin.server.config.EnableAdminServer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@SpringBootApplication
@EnableEurekaClient
@EnableAdminServer
public class AdminApplication {
    public static void main(String[] args) {
        SpringApplication.run(AdminApplication.class, args);
    }
}

application.yml

設置端口號為：8084

spring:
  application:
    name: hello-spring-cloud-admin
  zipkin:
    base-url: http://localhost:9411

server:
  port: 8084

management:
  endpoint:
    health:
      show-details: always
  endpoints:
    web:
      exposure:
        # 注意：此處在視頻里是 include: ["health", "info"] 但已無效了，請修改
        include: health,info

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

主要增加了 Spring Boot Admin Server 的相關配置

management:
  endpoint:
    health:
      show-details: always
  endpoints:
    web:
      exposure:
        # 注意：此處在視頻里是 include: ["health", "info"] 但已無效了描验，請修改
        include: health,info

測試訪問監(jiān)控中心

打開瀏覽器訪問：http://localhost:8084 會出現(xiàn)以下界面