Springboot-Admin服务监控
Spring-boot-admin 是一个开源组织写的服务监控的项目,git 地址 https://github.com/codecentric/spring-boot-admin
主要功能:
1. 监测服务数量、服务对应的实例数量、以及每个服务上线时长
2. 每个实例的JVM信息、CPU以及进线程等信息
3. 加载的Spring bean 信息、yml 中配置的信息、全局的配置信息、日志级别、session 信息等
4. SpringMVC 全局的映射关系, 也就是 url对应的方法信息以及处理的方法(这个可以理解为查看SpringMVC 保存URL信息的org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.MappingRegistry#mappingLookup<RequestMappingInfo, HandlerMethod> 缓存里面的信息,SpringMVC 项
目启动过程中会加载相关的mapping 信息到这个类里面)
1. 搭建一个Spring-boot-admin server 端
1. 新建子项目 cloud-admin-server, pom 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"> <parent> <artifactId>cloud</artifactId> <groupId>cn.qz.cloud</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>cloud-admin-server</artifactId> <dependencies> <!--admin server 需要的依赖--> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> <version>2.2.2</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> </project>
2. 新增application.yml 文件
spring:
application:
name: admin-server
server:
port: 8801
3. 新增主启动类
package cn.qz.cloud; import de.codecentric.boot.admin.server.config.EnableAdminServer; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @EnableAdminServer public class AdminServerApplication { public static void main(String[] args) { SpringApplication.run(AdminServerApplication.class, args); } }
4. 启动后访问8081 端口,查看如下:
2. admin-client 通过http 注册到admin-server
1. pom 增加如下依赖
<dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-client</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency>
2. yml 增加配置: 主要是增加admin 的url, 配置类在de.codecentric.boot.admin.client.config.ClientProperties
server: port: 8081 spring: application: name: cloud-provider-hystrix-payment redis: port: 6379 host: localhost session: store-type: redis boot: admin: client: url: http://localhost:8801 eureka: client: register-with-eureka: true fetch-registry: true service-url: #defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka defaultZone: http://localhost:7001/eureka management: endpoints: web: exposure: include: '*' endpoint: health: show-details: ALWAYS
3. 启动server, 然后启动client ,到8801 端口即可看到实例信息
3. 从eureka 注册中心直接拿客户端信息
1. 修改cloud-admin-server的pom ,增加如下引用:
<!--注册中心,从注册中心拿数据--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency>
2. yml 修改
spring: application: name: admin-server server: port: 8801 eureka: client: registryFetchIntervalSeconds: 5 service-url: defaultZone: ${EUREKA_SERVICE_URL:http://localhost:7001}/eureka/ instance: leaseRenewalIntervalInSeconds: 10 health-check-url-path: /actuator/health management: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYS
3. 测试即可,admin-server 会从eureka 拿取服务数据
4. 查看单个服务信息
还可以整合k8s等,这个等之后学习完k8s 再来补充。