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Protecting Spring Boot Admin & Actuator Endpoints with Keycloak

This example consists of a spring-boot-admin server application admin-service which monitors another application called todo-service build with Spring Boot.
The admin-service exposes the Spring Boot Admin UI via the /admin endpoint which is protected by the Keycloak adapter. The actuator endpoints of the todo-service are also protected with Keycloak and accessed via a service-account configured for the admin-service Keycloak client.

This example is currently build with:

  • Spring Boot 2.1.4
  • Spring Boot Admin 2.1.3
  • Keycloak 4.8.3

Note that an older version of this example is available in the 1.5.x branch, which uses:

  • Spring Boot 1.5.13
  • Spring Boot Admin 1.5.7
  • Keycloak 3.4.3.Final.

Setup Keycloak

Import bootadmin demo realm by executing the following command in the KEYCLOAK_HOME directory.

 bin/standalone.sh -Dkeycloak.migration.action=import \
  -Dkeycloak.migration.provider=singleFile \
  -Dkeycloak.migration.file=/path/to/bootadmin-realm.json \
  -Dkeycloak.migration.strategy=OVERWRITE_EXISTING

After that Keycloak should be running with the bootadmin realm loaded in Keycloaks in-memory database.
You can stop Keycloak with CTRL+C. You can start it again by running bin/standalone.sh.

Build the examples

Run mvn clean package in the project root.

Run the examples

Run the todo-service

The simple todo-service can be reached via http://localhost:30002
To start the service just run java -jar todo-service/target/*.jar

Run the admin-service

The admin-service can be reached via http://localhost:30001/admin
To start the service just run java -jar admin-service/target/*.jar