CODEWITHSUNDEEP
monitoringspring-boot-actuator
Roland Ettinger
Roland Ettinger

Reputation: 2835

Spring-boot-admin: App status remains "UP" after app crashes

Spring boot admin is a great tool to make the health and metrics of my spring boot application (in my case a web-server) available. I've followed the reference guide and could finally get it to run, with one exception though: The server doesn't seem to recognize if the client crashes/goes down.

For testing I currently use separate applications, both running on the same host. In the final version I plan to have multiple clients (running on separate IP addresses) to register with a single server running on its separate IP).

Server (a separate spring boot project)

pom.xml

...
<dependency>
    <groupId>de.codecentric</groupId>
    <artifactId>spring-boot-admin-server</artifactId>
</dependency>
<dependency>
    <groupId>de.codecentric</groupId>
    <artifactId>spring-boot-admin-server-ui</artifactId>
</dependency>
...

application.properties:

server.port=8081

MyMain:

@Configuration
@EnableAutoConfiguration
@EnableAdminServer
public class MyMain {
    public static void main(String[] args) {
        SpringApplication.run(MyMain.class, args);
    }
}

Client (my WebApp to be monitored):

pom.xml:

...
<!-- SPRING BOOT ADMIN (CLIENT) -->
<dependency>
    <groupId>de.codecentric</groupId>
    <artifactId>spring-boot-admin-starter-client</artifactId>
</dependency>
...

application.properties:

server.port=8080
spring.boot.admin.url=http://localhost:8081
spring.boot.admin.client.management-url=http://localhost:8081
spring.boot.admin.client.service-url=http://localhost:8080
spring.boot.admin.client.name=my-rest-app

With this setup I can connect to http://localhost:8080 to get my web-app or to http://localhost:8081 to see the admin/monitoring UI. The status shows UP and I can browse the mem/heap/traces/...

The issue now is, that if I kill the web-app the status remains UP.

  1. From the description I would have assumed that the server property spring.boot.admin.monitor.period is checking every 10s the status of the clients app.
  2. Or, do I require the notification feature for this?

Upvotes: 0

Views: 1559

Answers (2)

Mukul Bansal
Mukul Bansal

Reputation: 936

It's simple. 

spring.boot.admin.auto-deregistration=true

Set this in your application.properties.

Keep in mind, this only works when your application is terminated gracefully or using SIGTERM (kill -15 PID).

In case you kill your application, the app won't deregister itself because the context was not closed properly.

See more here- https://codecentric.github.io/spring-boot-admin/1.4.3/#spring-boot-admin-client

Upvotes: 1

Derrick
Derrick

Reputation: 4455

Try running the application through the command line from your project directory -

mvn spring-boot:run

Upvotes: 1

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