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Java User Group - Spring Boot Admin
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Johannes Edmeier
September 05, 2018
Programming
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Java User Group - Spring Boot Admin
Johannes Edmeier
September 05, 2018
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Transcript
Spring Boot Admin 1 Johannes Edmeier @joshiste
2
Setting things up (demo time) 3
4 Setting up the SBA Server (1) 1. Generate web
project using Spring Initializr $ curl https://start.spring.io/starter.tgz \ -d dependencies=web,\ codecentric-spring-boot-admin-client,\ codecentric-spring-boot-admin-server \ | tar -xzvf -
5 Setting up the SBA Server (2) @EnableAdminServer @SpringBootApplication public
class AdminServerApplication { ... } 2. Import Configuration to the Application
6 Register client applications (1) <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-client</artifactId> <version>2.0.3</version> </dependency>
1. Add dependency
7 Register client applications (2) spring.boot.admin.client.url=http://localhost:8081 management.endpoints.web.exposure.include=* management.endpoint.health.show-details=always 2. Configure
SBA Server localtion and expose endpoints
8 Easy client tweaks spring.application.name=spring-petclinic logging.file=target/petclinic.log info.sources=https://github.com/spring-projects/spring-petclinic <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId>
<executions> <execution> <goals> <goal>build-info</goal> </goals> </execution> </executions> </plugin>
9 alternatively use Eureka, Consul, Zookeeper, static config … or
any other Spring Cloud Discovery Client Register client applications
Behind the Scenes 10
11 SBA Client SBA Server client registers periodically via http
post
12 SBA Client SBA Server server polls health endpoint via
http … monitoring non-Boot applications is possible (just health checking)
13 Notifications HipChat eMail … or implement your own …
simply configured via properties
14 SBA Client server forwards requests to clients (using zuul)
SBA UI SBA Server … clients must expose actuator endpoints using http
15 … can be implemented using Spring Security e.g. Basic
Auth, JWT, session based, … … custom headers can be injected implementing a HttpHeadersProvider Security
16 Customization – HttpHeadersProvider @Bean public HttpHeadersProvider injectHeaders() { return
instance -> { HttpHeaders headers = new HttpHeaders() headers.set("X-CUSTOM", "1234567"); return headers; }; }
17 Customization - InstanceExchangeFilterFunction @Bean public InstanceExchangeFilterFunction auditLog() { return
(instance, request, next) -> { if (HttpMethod.POST.equals(request.method())) { log.info("{} for {} on {}", request.method(), instance.getId(), request.url()); } return next.exchange(request); }; }
18 Customization - Notifier @Bean public Notifier loggerNotifier() { return
event -> { log.info("Event {}", event.toString()); return Mono.empty(); }; }
19 Webflux Support Sessions Endpoint Support Mapping Endpoint Support Scheduled
Tasks Endpoint Support Out of the Box Cloudfoundry Support Html-Templates for Mail-Notifications Version is also looked up in Metadata Wallboard View Runs on Java 10 New Features in 2.0
20 Bugfixes… Bugfixes… Bugfixes… Support for Cache Endpoint (2.1.x) Multi-Instances-Actions
(e.g. Setting Loglevels) . . . What to Expect in the Future
21 Questions? [spring-boot-admin] codecentric/spring-boot-admin GITTER codecentric/spring-boot-admin