Spring Boot Admin是一个开源社区项目,用于管理和监控SpringBoot应用程序。 应用程序作为Spring Boot Admin Client向为Spring Boot Admin Server注册(通过HTTP)或使用SpringCloud注册中心(例如Eureka,Consul)发现。 UI是的Vue.js应用程序,展示Spring Boot Admin Client的Actuator端点上的一些监控。服务端采用Spring WebFlux + Netty的方式。Spring Boot Admin为注册的应用程序提供以下功能:
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4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.0.RELEASE
com.gf
admin-server
0.0.1-SNAPSHOT
admin-server
Demo project for Spring Boot
1.8
2.1.0
org.springframework.boot
spring-boot-starter-web
de.codecentric
spring-boot-admin-starter-server
org.springframework.boot
spring-boot-starter-test
test
de.codecentric
spring-boot-admin-dependencies
${spring-boot-admin.version}
pom
import
org.springframework.boot
spring-boot-maven-plugin
spring:
application:
name: admin-server
server:
port: 8769
启动类加上@EnableAdminServer注解,开启AdminServer的功能:
@SpringBootApplication
@EnableAdminServer
public class AdminServerApplication {
public static void main(String[] args) {
SpringApplication.run( AdminServerApplication.class, args );
}
}
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.0.RELEASE
com.gf
admin-client
0.0.1-SNAPSHOT
admin-client
Demo project for Spring Boot
1.8
2.1.0
org.springframework.boot
spring-boot-starter-web
de.codecentric
spring-boot-admin-starter-client
org.springframework.boot
spring-boot-starter-test
test
de.codecentric
spring-boot-admin-dependencies
${spring-boot-admin.version}
pom
import
org.springframework.boot
spring-boot-maven-plugin
spring:
application:
name: admin-client
boot:
admin:
client:
url: http://localhost:8769
server:
port: 8768
management:
endpoints:
web:
exposure:
include: '*'
endpoint:
health:
show-details: ALWAYS
@SpringBootApplication
public class AdminClientApplication {
public static void main(String[] args) {
SpringApplication.run( AdminClientApplication.class, args );
}
}
启动两个工程,在浏览器上输入localhost:8769 ,浏览器显示的界面如下:
cdn.xitu.io/2019/3/8/1695b44714639dcb?w=2446&h=1310&f=png&s=140223">
查看wallboard:
点击wallboard,可以查看admin-client具体的信息,比如内存状态信息:
查看spring bean的情况:
查看应用程序运行状况,信息和详细:
还有很多监控信息,多点一点就知道。
这是一个 eureka-server 注册中心。
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.0.RELEASE
com.gf
sc-admin-server
0.0.1-SNAPSHOT
sc-admin-server
Demo project for Spring Boot
1.8
2.1.0
Finchley.RELEASE
org.springframework.boot
spring-boot-starter-web
de.codecentric
spring-boot-admin-starter-server
2.1.0
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.springframework.boot
spring-boot-starter-mail
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
spring:
application:
name: sc-eureka-server
server:
port: 8761
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka
register-with-eureka: false
fetch-registry: false
management:
endpoints:
web:
exposure:
include: "*"
endpoint:
health:
show-details: ALWAYS
@SpringBootApplication
@EnableEurekaServer
public class ScEurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run( ScEurekaServerApplication.class, args );
}
}
这是一个 Spring Boot Admin Server端。
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.0.RELEASE
com.gf
sc-admin-server
0.0.1-SNAPSHOT
sc-admin-server
Demo project for Spring Boot
1.8
2.1.0
Finchley.RELEASE
org.springframework.boot
spring-boot-starter-web
de.codecentric
spring-boot-admin-starter-server
2.1.0
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.springframework.boot
spring-boot-starter-mail
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
spring:
application:
name: admin-server
server:
port: 8769
eureka:
client:
registryFetchIntervalSeconds: 5
service-url:
defaultZone: ${EUREKA_SERVICE_URL:http://localhost:8761}/eureka/
instance:
leaseRenewalIntervalInSeconds: 10
health-check-url-path: /actuator/health
management:
endpoints:
web:
exposure:
include: "*"
endpoint:
health:
show-details: ALWAYS
@SpringBootApplication
@EnableAdminServer
@EnableDiscoveryClient
public class ScAdminServerApplication {
public static void main(String[] args) {
SpringApplication.run( ScAdminServerApplication.class, args );
}
}
这是一个 Spring Boot Admin client 端。
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.0.RELEASE
com.gf
sc-admin-client
0.0.1-SNAPSHOT
sc-admin-client
Demo project for Spring Boot
1.8
2.1.0
Finchley.SR2
org.springframework.boot
spring-boot-starter-actuator
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-webflux
de.codecentric
spring-boot-admin-starter-client
org.springframework.cloud
spring-cloud-starter-netflix-eureka-client
org.springframework.boot
spring-boot-starter-test
test
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
spring:
application:
name: sc-admin-client
eureka:
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: ALWAYS
server:
port: 8762
@SpringBootApplication
@EnableDiscoveryClient
public class ScAdminClientApplication {
public static void main(String[] args) {
SpringApplication.run( ScAdminClientApplication.class, args );
}
}
启动三个工程,访问localhost:8769,出现如下界面:
admin 会自己拉取 Eureka 上注册的 app 信息,主动去注册。这也是唯一区别之前入门中手动注册的地方,就是 client 端不需要 admin-client 的依赖,也不需要配置 admin 地址了,一切全部由 admin-server 自己实现。这样的设计对环境变化很友好,不用改了admin-server后去改所有app 的配置了。
Web应用程序中的身份验证和授权有多种方法,因此Spring Boot Admin不提供默认方法。默认情况下,spring-boot-admin-server-ui提供登录页面和注销按钮。我们结合 Spring Security 实现需要用户名和密码登录的安全认证。
sc-admin-server工程的pom文件需要增加以下的依赖:
org.springframework.boot
spring-boot-starter-security
在 sc-admin-server工的配置文件 application.yml 中配置 spring security 的用户名和密码,这时需要在服务注册时带上 metadata-map 的信息,如下:
spring:
security:
user:
name: "admin"
password: "admin"
eureka:
instance:
metadata-map:
user.name: ${spring.security.user.name}
user.password: ${spring.security.user.password}
@EnableWebSecurity注解以及WebSecurityConfigurerAdapter一起配合提供基于web的security。继承了WebSecurityConfigurerAdapter之后,再加上几行代码,我们就能实现要求用户在进入应用的任何URL之前都进行验证的功能,写一个配置类SecuritySecureConfig继承WebSecurityConfigurerAdapter,配置如下:
@Configuration
public 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()
//授予对所有静态资产和登录页面的公共访问权限。
.antMatchers(adminContextPath + "/assets/**").permitAll()
.antMatchers(adminContextPath + "/login").permitAll()
//必须对每个其他请求进行身份验证
.anyRequest().authenticated()
.and()
//配置登录和注销
.formLogin().loginPage(adminContextPath + "/login").successHandler(successHandler).and()
.logout().logoutUrl(adminContextPath + "/logout").and()
//启用HTTP-Basic支持。这是Spring Boot Admin Client注册所必需的
.httpBasic().and();
// @formatter:on
}
}
重新访问 http://localhost:8769/ 会出现登录界面,密码是 配置文件中配置好的,账号 admin 密码 admin,界面如下:
在 Spring Boot Admin 中 当注册的应用程序状态更改为DOWN、UNKNOWN、OFFLINE 都可以指定触发通知,下面讲解配置邮件通知。
在sc-admin-server工程pom文件,加上mail的依赖,如下:
org.springframework.boot
spring-boot-starter-mail
在配置文件application.yml文件中,配置收发邮件的配置:
spring:
mail:
host: smtp.163.com
username: xxxx@163.com
password: xxxx
properties:
mail:
smtp:
auth: true
starttls:
enable: true
required: true
boot:
admin:
notify:
mail:
from: xxxx@163.com
to: xxxx@qq.com
配置后,重启sc-admin-server工程,之后若出现注册的客户端的状态从 UP 变为 OFFLINE 或其他状态,服务端就会自动将电子邮件发送到上面配置的收件地址。
注意 : 配置了邮件通知后,会出现 反复通知 service offline / up。这个问题的原因在于 查询应用程序的状态和信息超时,下面给出两种解决方案:
#方法一:增加超时时间(单位:ms)
spring.boot.admin.monitor.read-timeout=20000
#方法二:关闭闭未使用或不重要的检查点
management.health.db.enabled=false
management.health.mail.enabled=false
management.health.redis.enabled=false
management.health.mongo.enabled=false
可以通过添加实现Notifier接口的Spring Beans来添加您自己的通知程序,最好通过扩展 AbstractEventNotifier或AbstractStatusChangeNotifier。在sc-admin-server工程中编写一个自定义的通知器:
@Component
public class CustomNotifier extends AbstractStatusChangeNotifier {
private static final Logger LOGGER = LoggerFactory.getLogger( LoggingNotifier.class);
public CustomNotifier(InstanceRepository repository) {
super(repository);
}
@Override
protected Mono doNotify(InstanceEvent event, Instance instance) {
return Mono.fromRunnable(() -> {
if (event instanceof InstanceStatusChangedEvent) {
LOGGER.info("Instance {} ({}) is {}", instance.getRegistration().getName(), event.getInstance(),
((InstanceStatusChangedEvent) event).getStatusInfo().getStatus());
String status = ((InstanceStatusChangedEvent) event).getStatusInfo().getStatus();
switch (status) {
// 健康检查没通过
case "DOWN":
System.out.println("发送 健康检查没通过 的通知!");
break;
// 服务离线
case "OFFLINE":
System.out.println("发送 服务离线 的通知!");
break;
//服务上线
case "UP":
System.out.println("发送 服务上线 的通知!");
break;
// 服务未知异常
case "UNKNOWN":
System.out.println("发送 服务未知异常 的通知!");
break;
default:
break;
}
} else {
LOGGER.info("Instance {} ({}) {}", instance.getRegistration().getName(), event.getInstance(),
event.getType());
}
});
}
}
源码:https://github.com/gf-huanchupk/SpringBootLearning/tree/master/springboot-admin
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