I have an endpoint /api/actuator/prometheus that returns registered metrics in Prometheus format.
Is it possible to format this document prettily and host it on GitLab Pages?
I want to do something similar as Open API does but for available Prometheus metrics.
Related
Does using #RefreshScope annotation generates any metrics in springboot which can be visualised in grafana or prometheus?
Once you have this enabled, the configuration refresh is automatically enabled via "/actuator/refresh" endpoint. This traffic should be automatically captured by prometheus. I dont have it setup locally, but query to get total count would be something like:
http_server_requests_seconds_count{method="GET",status="200",uri="/actuator/refresh",}
update adding official documentation from comment:
Official Documentation
I want to automatically scale my Backend Spring Boot application using actuator metrics such as: jvm.threads.live, jvm.memory.used, process.cpu.usage. My application is deployed in a kubernetes cluster, for this I use the HPA controller in my cluster. How do I get these metrics and configure my HPA yaml file to monitor and observe these parameters and add a threshold for each metric.
You can use prometheus adapter for k8s API to be able to use actuator's metrics in HPA. Here's an example of usage.
You need such an intermediate agent as Prometheus, as it does many necessary things for you, such as collecting these metrics from all pods within the autoscaling group, storing metrics, and providing query language to define an autoscaling policy.
I have developed a couple of microservices using SpringBoot, has exposed some custom metrics using Micrometer which are available at /actuator/prometheus endpoint. I tested the application locally with docker prometheus container with scrape config pointing to the endpoint and its showing the metrics.
Now I have deployed it into kubernetes in GKE (version 1.14.7-gke.23) with Istio (version 1.4.0) enabled using the demo profile. But the prometheus that comes with istio is not scraping the SpringBoot /actuator/prometheus endpoint. I took queues from this link "https://preliminary.istio.io/faq/metrics-and-logs/#prometheus-application-metrics" and added the annotations to the Deployments but to no avail.
Help requested on how to get this working... Thanks
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