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.)
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 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 am building a Spring Boot application and planning to use the /actuator/prometheus for data scraping by Prometheus. It seems that the main way is to use Micrometer. However, I see that there is another library, which is Spring Metrics.
What is the go to way to have custom metrics that will be scraped by prometheus?
Early in its development, Micrometer was named Spring Metrics. If you got to the project's GitHub repository (https://github.com/spring-projects/spring-metrics) you will see that it redirects to https://github.com/micrometer-metrics/micrometer as the repository was moving into the micrometer-metrics organization and renamed.
In short, you should use Micrometer.
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
We have created our application with Spring-Cloud Eureka and Spring-Cloud Zuul with multiple core / support micro services registering to Eureka and accessed via Zuul, everything works fine.
We wanted to collect metrics of the APIs that is accessed via ZUUL.
For example, API - ".../extract" need to know how many times its accessed in 5,15 and 60min time period.
We did some analysis and found various metrics library like Netflix Servo, Dropwiard Metrics, Spring Boot Actuator. Everything points to implementation at the service or API level. We wanted our metrics to be captured at ZUUL itself so that a simple counter is implemented in ZUUL and that would provide us the required metrics. Any suggestion in how to implement this would be helpful.