I have a springboot app from which i would like to expose the kafka.consumer metrics to Prometheus via JMX. I can see the metrics here but i just don't know where to set those mBeans(i.e. kafka.consumer:type=consumer-metrics,client-id=([-.\w]+)). I understood reading the spring boot documentation that i need to activate JMX only by doing this setting spring.jmx.enabled=true but i don't know what to do extra to expose those metrics to Prometheus through JMX.
Kafka automatically registers its own MBeans with those names.
If you add the actuator starter, Boot will configure Micrometer to scrape those MBeans.
However, Micrometer has deprecated the JMX scraper and has new KafkaMetrics Objects.
Spring Boot 2.3 now uses those classes to configure Micrometer instead of JMX.
Related
I have a non boot spring application with micrometer integrated. Right now we are pushing these metrics to the logging file using LoggingRegistry.
We want to enhance this project to expose these metrics in the Rest API(we cannot use actuator as turning ON auto configuration is causing issues in our non boot application).Is there any way to expose these metrics which are automatically provided by the micrometer in the Rest API?
Any example will be appreciated?
You can add PrometheusMeterRegistry, it is for this use case, see the docs: https://micrometer.io/docs/registry/prometheus
I want to see Kafka producer JMX metrics using Spring boot actuator. How can I see those metrics using spring boot? AN example will be much appriciated
You can use Spring Boot Admin.
You'll create a Spring Boot Admin application and have your producer register itself with it. Here's a nice tutorial.
How to add/integrate rest api end points in prometheus. For eg in splunk we are monitoring micro services transactions and logs.
Lets say below spring boot:-
/abc/v1/something
/abce/v1/something2
In one line :-how can we add above micro services end points to prometheus for motioning
When using Spring Boot 2, you can easily expose your application metrics for Prometheus. See here. You'd add spring-boot-starter-actuator and the Prometheus support with micrometer-registry-prometheus to your dependencies.
This will expose the metrics under /actuator/prometheus in the Prometheus exposition format to be scraped by your Prometheus instance.
Assumung you are using Spring WebMvc, then you'll get out-of-the-box metrics for your HTTP endpoints. (Jersey support is also provided with an extra module/dependency.)
I have a Spring Boot REST service application. This application uses Spring Actuator to display metrics and health information. How can I aggregate this information from two or more containers running the same application?
You need to export the metrics to a central system.
Spring Boot provides a couple of implementations of a marker interface
called Exporter which can be used to copy metric readings from the
in-memory buffers to a place where they can be analyzed and displayed.
More specifically personally I like exporting metrics to statsD
To export metrics to Statsd, make sure first that you have added
com.timgroup:java-statsd-client as a dependency of your project
(Spring Boot provides a dependency management for it). Then add a
spring.metrics.export.statsd.host value to your application.properties
file. Connections will be opened to port 8125 unless a
spring.metrics.export.statsd.port override is provided. You can use
spring.metrics.export.statsd.prefix if you want a custom prefix.
The information above is all from the Spring Boot documentation on metrics: https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-metrics.html
I'm using the actuator sub project in my spring boot application. I configured the address and the port of the actuator management functions in the application.properties to separate the monitoring traffic from the production traffic.
management.address=127.0.0.1
management.port=8081
Additionally I want to use java melody and I want to provide the java melody dashboard on the same connection pool as the actuator endpoints. So finally the java melody dashboard should be provided by localhost:8081/monitoring, not(!) by localhost:8080/monitoring.
How can I do that?
You can now use the spring-boot management port (e.g. 8081) for the monitoring page instead of the application http port (e.g. 8080), since javamelody-spring-boot-starter 1.76.
See doc:
https://github.com/javamelody/javamelody/wiki/SpringBootStarter#configuration-in-case-of-management-port