Spring Boot Admin:微服务应用监控
Spring Boot Admin 可以对SpringBoot应用的各项指标进行监控,可以作为微服务架构中的监控中心来使用,本文将对其用法进行详细介绍。
SpringBoot应用可以通过Actuator来暴露应用运行过程中的各项指标,Spring Boot Admin通过这些指标来监控SpringBoot应用,然后通过图形化界面呈现出来。Spring Boot Admin不仅可以监控单体应用,还可以和Spring Cloud的注册中心相结合来监控微服务应用。
Spring Boot Admin 可以提供应用的以下监控信息:
监控应用运行过程中的概览信息;
度量指标信息,比如JVM、Tomcat及进程信息;
环境变量信息,比如系统属性、系统环境变量以及应用配置信息;
查看所有创建的Bean信息;
查看应用中的所有配置信息;
查看应用运行日志信息;
查看JVM信息;
查看可以访问的Web端点;
查看HTTP跟踪信息。
这里我们创建一个admin-server模块来作为监控中心演示其功能。
在pom.xml中添加相关依赖:
<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>Copy to clipboardErrorCopied
在application.yml中进行配置:
spring:
application:
name: admin-server
server:
port: 9301Copy to clipboardErrorCopied
在启动类上添加@EnableAdminServer来启用admin-server功能:
@EnableAdminServer@SpringBootApplicationpublicclassAdminServerApplication{publicstaticvoidmain(String[]args){SpringApplication.run(AdminServerApplication.class,args);}}Copy to clipboardErrorCopied
这里我们创建一个admin-client模块作为客户端注册到admin-server。
在pom.xml中添加相关依赖:
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>de.codecentric</groupId><artifactId>spring-boot-admin-starter-client</artifactId></dependency>Copy to clipboardErrorCopied
在application.yml中进行配置:
spring:
application:
name: admin-client
boot:
admin:
client:
url: http://localhost:9301 #配置admin-server地址
server:
port: 9305
management:
endpoints:
web:
exposure:
include: '*'
endpoint:
health:
show-details: always
logging:
file: admin-client.log #添加开启admin的日志监控Copy to clipboardErrorCopied
启动admin-server和admin-client服务。
访问如下地址打开Spring Boot Admin的主页:http://localhost:9301
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点击wallboard按钮,选择admin-client查看监控信息;
监控信息概览;
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度量指标信息,比如JVM、Tomcat及进程信息;
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环境变量信息,比如系统属性、系统环境变量以及应用配置信息;
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查看所有创建的Bean信息;
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查看应用中的所有配置信息;
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查看日志信息,需要添加以下配置才能开启;
logging:
file: admin-client.log #添加开启admin的日志监控Copy to clipboardErrorCopied
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查看JVM信息;
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查看可以访问的Web端点;
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查看HTTP跟踪信息;
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Spring Boot Admin结合Spring Cloud 注册中心使用,只需将admin-server和注册中心整合即可,admin-server 会自动从注册中心获取服务列表,然后挨个获取监控信息。这里以Eureka注册中心为例来介绍下该功能。
在pom.xml中添加相关依赖:
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency>Copy to clipboardErrorCopied
在application-eureka.yml中进行配置,只需添加注册中心配置即可:
spring:
application:
name: admin-server
server:
port: 9301
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defaultZone: http://localhost:8001/eureka/Copy to clipboardErrorCopied
在启动类上添加@EnableDiscoveryClient来启用服务注册功能:
@EnableDiscoveryClient@EnableAdminServer@SpringBootApplicationpublicclassAdminServerApplication{publicstaticvoidmain(String[]args){SpringApplication.run(AdminServerApplication.class,args);}}Copy to clipboardErrorCopied
在pom.xml中添加相关依赖:
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency>Copy to clipboardErrorCopied
在application-eureka.yml中进行配置,删除原来的admin-server地址配置,添加注册中心配置即可:
spring:
application:
name: admin-client
server:
port: 9305
management:
endpoints:
web:
exposure:
include: '*'
endpoint:
health:
show-details: always
logging:
file: admin-client.log #添加开启admin的日志监控
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defaultZone: http://localhost:8001/eureka/Copy to clipboardErrorCopied
在启动类上添加@EnableDiscoveryClient来启用服务注册功能:
@EnableDiscoveryClient@SpringBootApplicationpublicclassAdminClientApplication{publicstaticvoidmain(String[]args){SpringApplication.run(AdminClientApplication.class,args);}}Copy to clipboardErrorCopied
启动eureka-server,使用application-eureka.yml配置启动admin-server,admin-client;
查看注册中心发现服务均已注册:http://localhost:8001/
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查看Spring Boot Admin 主页发现可以看到服务信息:http://localhost:9301
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我们可以通过给admin-server添加Spring Security支持来获得登录认证功能。
在pom.xml中添加相关依赖:
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>de.codecentric</groupId><artifactId>spring-boot-admin-starter-server</artifactId><version>2.1.5</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>Copy to clipboardErrorCopied
在application.yml中进行配置,配置登录用户名和密码,忽略admin-security-server的监控信息:
spring:
application:
name: admin-security-server
security: # 配置登录用户名和密码
user:
name: macro
password: 123456
boot: # 不显示admin-security-server的监控信息
admin:
discovery:
ignored-services: ${spring.application.name}
server:
port: 9301
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defaultZone: http://localhost:8001/eureka/Copy to clipboardErrorCopied
对SpringSecurity进行配置,以便admin-client可以注册:
/**
* Created by macro on 2019/9/30.
*/@ConfigurationpublicclassSecuritySecureConfigextendsWebSecurityConfigurerAdapter{privatefinalStringadminContextPath;publicSecuritySecureConfig(AdminServerPropertiesadminServerProperties){this.adminContextPath=adminServerProperties.getContextPath();}@Overrideprotectedvoidconfigure(HttpSecurityhttp)throwsException{SavedRequestAwareAuthenticationSuccessHandlersuccessHandler=newSavedRequestAwareAuthenticationSuccessHandler();successHandler.setTargetUrlParameter("redirectTo");successHandler.setDefaultTargetUrl(adminContextPath+"/");http.authorizeRequests()//1.配置所有静态资源和登录页可以公开访问.antMatchers(adminContextPath+"/assets/**").permitAll().antMatchers(adminContextPath+"/login").permitAll().anyRequest().authenticated().and()//2.配置登录和登出路径.formLogin().loginPage(adminContextPath+"/login").successHandler(successHandler).and().logout().logoutUrl(adminContextPath+"/logout").and()//3.开启http basic支持,admin-client注册时需要使用.httpBasic().and().csrf()//4.开启基于cookie的csrf保护.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())//5.忽略这些路径的csrf保护以便admin-client注册.ignoringAntMatchers(adminContextPath+"/instances",adminContextPath+"/actuator/**");}}Copy to clipboardErrorCopied
修改启动类,开启AdminServer及注册发现功能:
@EnableDiscoveryClient@EnableAdminServer@SpringBootApplicationpublicclassAdminSecurityServerApplication{publicstaticvoidmain(String[]args){SpringApplication.run(AdminSecurityServerApplication.class,args);}}Copy to clipboardErrorCopied
启动eureka-server,admin-security-server,访问Spring Boot Admin 主页发现需要登录才能访问:http://localhost:9301
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springcloud-learning
├── eureka-server -- eureka注册中心
├── admin-server -- admin监控中心服务
├── admin-client -- admin监控中心监控的应用服务
└── admin-security-server -- 带登录认证的admin监控中心服务Copy to clipboardErrorCopied