Chapter 2. Exposing metrics in your Quarkus applications

Procedure

1. Add the quarkus-micrometer-registry-prometheus extension as a dependency to your application:

   ./mvnw quarkus:add-extension -Dextensions="io.quarkus:quarkus-micrometer-registry-prometheus"

   Copy to Clipboard Toggle word wrap

   This command adds the following dependency to your pom.xml:

   pom.xml

   <dependency>
         <groupId>io.quarkus</groupId>
       <artifactId>quarkus-micrometer-registry-prometheus</artifactId>
   </dependency>

   Copy to Clipboard Toggle word wrap

2. Enter the following command to display collected metrics on your terminal:

   curl http://localhost:8080/q/metrics

   Copy to Clipboard Toggle word wrap

3. (Optional) To enable the collection of metrics in JSON format using the Micrometer extension, add the following line to the src/main/resources/application.properties file:

   quarkus.micrometer.export.json.enabled=true

   Copy to Clipboard Toggle word wrap
4. Save the changes to the application.properties file.

5. Use the following command to view metrics in JSON format:

   curl -i -H "Accept: application/json" -H "Content-Type: application/json"
   http://localhost:8080/q/metrics

   Copy to Clipboard Toggle word wrap