SpringCloud微服务实战——搭建企业级开发框架(四十四):【微服务监控告警实现方式一】使用Actuator + Spring Boot Admin实现简单的微服务监控告警系统
??业务系统正常运行的稳定性十分重要,作为SpringBoot的四大核心之一,Actuator让你时刻探知SpringBoot服务运行状态信息,是保障系统正常运行必不可少的组件。
??spring-boot-starter-actuator提供的是一系列HTTP或者JMX监控端点,通过监控端点我们可以获取到系统的运行统计信息,同时,我们可以自己选择开启需要的监控端点,也可以自定义扩展监控端点。
??Actuator通过端点对外暴露的监控信息是JSON格式数据,我们需要使用界面来展示,目前使用比较多的就是Spring Boot Admin或者Prometheus + Grafana的方式:Spring Boot Admin实现起来相对比较简单,不存在数据库,不能存储和展示历史监控数据;Prometheus(时序数据库) + Grafana(界面)的方式相比较而言功能更丰富,提供历史记录存储,界面展示也比较美观。
??相比较而言,Prometheus + Grafana的方式更为流行一些,现在的微服务及Kubernetes基本是采用这种方式的。但是对于小的项目或者单体应用,Spring Boot Admin会更加方便快捷一些。具体采用那种方式,可以根据自己的系统运维需求来取舍,这里我们把框架集成两种方式,在实际应用过程中自有选择。
??本文主要介绍如何集成Spring Boot Admin以及通过SpringSecurity控制Actuator的端点权限。
1、在基础服务gitegg-platform中引入spring-boot-starter-actuator包。
??无论是使用Spring Boot Admin还是使用Prometheus + Grafana的方式都需要spring-boot-starter-actuator来获取监控信息,这里将spring-boot-starter-actuator包添加到gitegg-platform-boot基础平台包中,这样所有的微服务都集成了此功能。
org.springframework.boot
spring-boot-starter-actuator
2、确定并引入工程使用的spring-boot-admin-starter-server和spring-boot-admin-starter-client依赖包。
??spring-boot-admin-starter-server是Spring Boot Admin的服务端,我们需要新建一个SpringBoot工程来启动这个服务端,用来接收需要监控的服务注册,展示监控告警信息。spring-boot-admin-starter-client是客户端,需要被监控的服务需要引入这个依赖包。
??此处请注意: 看到网上很多文章里面写着添加spring-boot-admin-starter-client包,在SpringCloud微服务中是不需要引入的,spring-boot-admin-starter-client包仅仅是为了引入我们gitegg-platform平台工程的对应版本,在gitegg-boot框架中使用,在SpringCloud微服务框架中,不需要引入spring-boot-admin-starter-client,SpringBootAdmin会自动根据微服务注册信息查找服务端点,官方文档说明:spring-cloud-discovery-support 。
??在选择版本时,一定要找到对应SpringBoot版本的Spring Boot Admin,GitHub上有版本对应关系的说明:
??我们在gitegg-platform-pom中来定义需要引入的spring-boot-admin-starter-server和spring-boot-admin-starter-client依赖包版本,然后在微服务业务开发中具体引入,这里不做统一引入,方便微服务切换监控方式。
......
2.3.1
......
de.codecentric
spring-boot-admin-starter-server
${spring.boot.admin.version}
de.codecentric
spring-boot-admin-starter-client
${spring.boot.admin.version}
.
......
3、在GitEgg-Cloud项目的gitegg-plugin工程下新建gitegg-admin-monitor工程,用于运行spring-boot-admin-starter-server。
- pom.xml中引入需要的依赖包
com.gitegg.platform
gitegg-platform-boot
com.gitegg.platform
gitegg-platform-cache
com.gitegg.platform
gitegg-platform-cloud
org.springframework.boot
spring-boot-starter-security
org.springframework.boot
spring-boot-starter-logging
de.codecentric
spring-boot-admin-starter-server
- 添加spring-boot-admin-starter-server启动类GitEggMonitorApplication.java,添加@EnableAdminServer注解即可。
@EnableAdminServer
@SpringBootApplication
@RefreshScope
public class GitEggMonitorApplication {
public static void main(String[] args)
{
SpringApplication.run(GitEggMonitorApplication.class, args);
}
}
- 添加SpringSecurity的WebSecurityConfigurerAdapter配置类,保护监控系统安全。
??这里主要配置登录页面、静态文件、登录、退出等的权限。请注意这里配置了publicUrl的前缀,当部署在微服务环境或Docker环境中需要经过gateway或者nginx转发时,在SpringBootAdmin配置中,需要配置publicUrl,否则SpringBootAdmin只会跳转到本机环境的地址和端口。publicUrl如果是80端口,那么这个端口不能省略,需要配置上。
@Configuration(proxyBeanMethods = false)
public class SecuritySecureConfig extends WebSecurityConfigurerAdapter {
private final AdminServerUiProperties adminUi;
private final AdminServerProperties adminServer;
private final SecurityProperties security;
public SecuritySecureConfig(AdminServerUiProperties adminUi, AdminServerProperties adminServer, SecurityProperties security) {
this.adminUi = adminUi;
this.adminServer = adminServer;
this.security = security;
}
@Override
protected void configure(HttpSecurity http) throws Exception {
// 当设置了publicUrl时,Gateway跳转到login或logout链接需要redirect到publicUrl
String publicUrl = this.adminUi.getPublicUrl() != null ? this.adminUi.getPublicUrl() : this.adminServer.getContextPath();
SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler();
successHandler.setTargetUrlParameter("redirectTo");
successHandler.setDefaultTargetUrl(publicUrl + "/");
http.authorizeRequests(
(authorizeRequests) -> authorizeRequests.antMatchers(this.adminServer.path("/assets/**")).permitAll()
.antMatchers(this.adminServer.path("/actuator/info")).permitAll()
.antMatchers(this.adminServer.path("/actuator/health")).permitAll()
.antMatchers(this.adminServer.path("/login")).permitAll().anyRequest().authenticated()
).formLogin(
(formLogin) -> formLogin.loginPage(publicUrl + "/login").loginProcessingUrl(this.adminServer.path("/login")).successHandler(successHandler).and()
).logout((logout) -> logout.logoutUrl(publicUrl + "/logout")).httpBasic(Customizer.withDefaults())
.csrf((csrf) -> csrf.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
.ignoringRequestMatchers(
new AntPathRequestMatcher(this.adminServer.path("/instances"),
HttpMethod.POST.toString()),
new AntPathRequestMatcher(this.adminServer.path("/instances/*"),
HttpMethod.DELETE.toString()),
new AntPathRequestMatcher(this.adminServer.path("/actuator/**"))
))
.rememberMe((rememberMe) -> rememberMe.key(UUID.randomUUID().toString()).tokenValiditySeconds(1209600));
}
/**
* Required to provide UserDetailsService for "remember functionality"
* @param auth
* @throws Exception
*/
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().withUser(security.getUser().getName())
.password("{noop}" + security.getUser().getPassword()).roles(security.getUser().getRoles().toArray(new String[0]));
}
}
4、在Nacos配置中心配置SpringBootAdmin的相关配置,在gitegg-admin-monitor工程中,也需要配置读取配置的相关yml文件,除了读取主配置之外,还需要读取SpringBootAdmin专属配置。
- 新增gitegg-cloud-config-admin-monitor.yaml配置文件
spring:
boot:
admin:
ui:
brand: GitEgg微服务监控系统
title: GitEgg微服务监控系统
favicon: https://img2022.cnblogs.com/blog/460952/202207/460952-20220727124816822-208395561.png
public-url: http://127.0.0.1:80/gitegg-admin-monitor/monitor
context-path: /monitor
- 在bootstrap.yml中新增读取gitegg-cloud-config-admin-monitor.yaml的配置
server:
port: 8009
spring:
profiles:
active: '@spring.profiles.active@'
application:
name: '@artifactId@'
cloud:
inetutils:
ignored-interfaces: docker0
nacos:
discovery:
server-addr: ${spring.nacos.addr}
metadata:
# 启用SpringBootAdmin时 客户端端点信息的安全认证信息
user.name: ${spring.security.user.name}
user.password: ${spring.security.user.password}
config:
server-addr: ${spring.nacos.addr}
file-extension: yaml
extension-configs:
# 必须带文件扩展名,此时 file-extension 的配置对自定义扩展配置的 Data Id 文件扩展名没有影响
- data-id: ${spring.nacos.config.prefix}.yaml
group: ${spring.nacos.config.group}
refresh: true
- data-id: ${spring.nacos.config.prefix}-admin-monitor.yaml
group: ${spring.nacos.config.group}
refresh: true
5、扩展gitegg-gateway的SpringSecurity配置,增加统一鉴权校验。因我们有多个微服务,且所有的微服务在生产环境部署时都不会暴露端口,所以所有的微服务鉴权都会在网关做。
??SpringSecurity权限验证支持多过滤器配置,同时可配置验证顺序,我们这里需要改造之前的过滤器,这里新增Basic认证过滤器,通过securityMatcher设置,只有健康检查的请求走这个权限过滤器,其他请求继续走之前我们设置的OAuth2+JWT权限验证器。
/**
* 权限配置
* 注解需要使用@EnableWebFluxSecurity而非@EnableWebSecurity,因为SpringCloud Gateway基于WebFlux
*
* @author GitEgg
*
*/
@RequiredArgsConstructor(onConstructor_ = @Autowired)
@Configuration
@EnableWebFluxSecurity
public class MultiWebSecurityConfig {
private final AuthorizationManager authorizationManager;
private final AuthServerAccessDeniedHandler authServerAccessDeniedHandler;
private final AuthServerAuthenticationEntryPoint authServerAuthenticationEntryPoint;
private final AuthUrlWhiteListProperties authUrlWhiteListProperties;
private final WhiteListRemoveJwtFilter whiteListRemoveJwtFilter;
private final SecurityProperties securityProperties;
@Value("${management.endpoints.web.base-path:}")
private String actuatorPath;
/**
* 健康检查接口权限配置
* @param http
* @return
*/
@Order(Ordered.HIGHEST_PRECEDENCE)
@Bean
@ConditionalOnProperty( value = {"management.security.enabled", "management.endpoints.enabled-by-default"}, havingValue = "true")
SecurityWebFilterChain webHttpSecurity(ServerHttpSecurity http) {
if (StringUtils.isEmpty(actuatorPath))
{
throw new BusinessException("当启用健康检查时,不允许健康检查的路径为空");
}
http
.cors()
.and()
.csrf().disable()
.formLogin().disable()
.securityMatcher(new OrServerWebExchangeMatcher(
new PathPatternParserServerWebExchangeMatcher(actuatorPath + "/**"),
new PathPatternParserServerWebExchangeMatcher("/**" + actuatorPath + "/**")
))
.authorizeExchange((exchanges) -> exchanges
.anyExchange().hasAnyRole(securityProperties.getUser().getRoles().toArray(new String[0]))
)
.httpBasic(Customizer.withDefaults());
return http.build();
}
/**
* 设置Basic认证用户信息
* @return
*/
@Bean
@ConditionalOnProperty( value = {"management.security.enabled", "management.endpoints.enabled-by-default"}, havingValue = "true")
ReactiveUserDetailsService userDetailsService() {
return new MapReactiveUserDetailsService(User
.withUsername(securityProperties.getUser().getName())
.password(passwordEncoder().encode(securityProperties.getUser().getPassword()))
.roles(securityProperties.getUser().getRoles().toArray(new String[0]))
.build());
}
/**
* 设置密码编码
* @return
*/
@Bean
@ConditionalOnProperty( value = {"management.security.enabled", "management.endpoints.enabled-by-default"}, havingValue = "true")
public static PasswordEncoder passwordEncoder() {
DelegatingPasswordEncoder delegatingPasswordEncoder =
(DelegatingPasswordEncoder) PasswordEncoderFactories.createDelegatingPasswordEncoder();
return delegatingPasswordEncoder;
}
/**
* 路由转发权限配置
* @param http
* @return
*/
@Bean
SecurityWebFilterChain apiHttpSecurity(ServerHttpSecurity http) {
http.oauth2ResourceServer().jwt()
.jwtAuthenticationConverter(jwtAuthenticationConverter());
// 自定义处理JWT请求头过期或签名错误的结果
http.oauth2ResourceServer().authenticationEntryPoint(authServerAuthenticationEntryPoint);
// 对白名单路径,直接移除JWT请求头,不移除的话,后台会校验jwt
http.addFilterBefore(whiteListRemoveJwtFilter, SecurityWebFiltersOrder.AUTHENTICATION);
// Basic认证直接放行
if (!CollectionUtils.isEmpty(authUrlWhiteListProperties.getTokenUrls()))
{
http.authorizeExchange().pathMatchers(ArrayUtil.toArray(authUrlWhiteListProperties.getTokenUrls(), String.class)).permitAll();
}
// 判断是否有静态文件
if (!CollectionUtils.isEmpty(authUrlWhiteListProperties.getStaticFiles()))
{
http.authorizeExchange().pathMatchers(ArrayUtil.toArray(authUrlWhiteListProperties.getStaticFiles(), String.class)).permitAll();
}
http.authorizeExchange()
.pathMatchers(ArrayUtil.toArray(authUrlWhiteListProperties.getWhiteUrls(), String.class)).permitAll()
.anyExchange().access(authorizationManager)
.and()
.exceptionHandling()
/**
* 处理未授权
*/
.accessDeniedHandler(authServerAccessDeniedHandler)
/**
* 处理未认证
*/
.authenticationEntryPoint(authServerAuthenticationEntryPoint)
.and()
.cors()
.and().csrf().disable();
return http.build();
}
/**
* ServerHttpSecurity没有将jwt中authorities的负载部分当做Authentication,需要把jwt的Claim中的authorities加入
* 解决方案:重新定义ReactiveAuthenticationManager权限管理器,默认转换器JwtGrantedAuthoritiesConverter
*/
@Bean
public Converter> jwtAuthenticationConverter() {
JwtGrantedAuthoritiesConverter jwtGrantedAuthoritiesConverter = new JwtGrantedAuthoritiesConverter();
jwtGrantedAuthoritiesConverter.setAuthorityPrefix(AuthConstant.AUTHORITY_PREFIX);
jwtGrantedAuthoritiesConverter.setAuthoritiesClaimName(AuthConstant.AUTHORITY_CLAIM_NAME);
JwtAuthenticationConverter jwtAuthenticationConverter = new JwtAuthenticationConverter();
jwtAuthenticationConverter.setJwtGrantedAuthoritiesConverter(jwtGrantedAuthoritiesConverter);
return new ReactiveJwtAuthenticationConverterAdapter(jwtAuthenticationConverter);
}
}
6、在Nacos配置中心,统一配置所有微服务的健康检查端点地址,权限校验的用户名密码等。
spring:
......
security:
# # 启用SpringBootAdmin时,健康检查权限校验,不使用SpringBootAdmin此处可省略
user:
name: user
password: password
roles: ACTUATOR_ADMIN
......
# 性能监控端点配置
management:
security:
enabled: true
role: ACTUATOR_ADMIN
endpoint:
health:
show-details: always
endpoints:
enabled-by-default: true
web:
base-path: /actuator
exposure:
include: '*'
server:
servlet:
context-path: /actuator
health:
mail:
enabled: false
......
7、设置网关Gateway配置,对gitegg-admin-monitor进行过路由和转发。
spring:
gateway:
discovery:
locator:
enabled: true
routes:
......
- id: gitegg-admin-monitor
uri: lb://gitegg-admin-monitor
predicates:
- Path=/gitegg-admin-monitor/**
filters:
- StripPrefix=1
- id: monitor
uri: lb://gitegg-admin-monitor
predicates:
- Path=/monitor/**
filters:
- StripPrefix=0
......
8、启动所有的微服务,并访问 http://127.0.0.1/gitegg-admin-monitor/monitor/login 进行健康检查微服务配置。
??根据我们在Nacos中的配置,我们这里的登录用户名密码是:user / password
??以上为SpringBootAdmin在SpringCloud微服务中的搭建和配置步骤,相比较而言比较简单,但是一定要注意权限问题,不要因为健康检查而泄露了系统信息。我们这里是通过Gateway进行的统一鉴权,在生产环境部署时,一定要注意修改默认的Basic校验用户名密码,甚至需要修改健康检查端点。
源码地址:
Gitee: https://gitee.com/wmz1930/GitEgg
GitHub: https://github.com/wmz1930/GitEgg