How can I use Prometheus Histogram to get latency/response time of an application?

Asked Aug 17 '22 at 13:05

Active Aug 18 '22 at 07:26

Viewed 143 times

I deployed a web app and kube-prometheus-stack on a Kubernetes cluster, and I am trying to measure the latency of the application on Prometheus.

I see that I can get some results for the prometheus_http_requests_total query or histogram_quantile(0.9, rate(prometheus_http_request_duration_seconds_bucket[5m])) query. However, I get results for Prometheus but not for the application.

I am very new to Prometheus and PromQL, so I would appreciate any help to write a query to get latency/response time of the application.

Or is it possible to get the result with sum(rate(container_http_request{container!=""}[5m])) by (namespace)?

edited Aug 18 '22 at 07:26

Hector Martinez Rodriguez

asked Aug 17 '22 at 13:05

user19717254

Because you're saying you're new, did you already take a look into the [official documentation](https://prometheus.io/docs/prometheus/latest/querying/basics/) for PromQL? – Hector Martinez Rodriguez Aug 17 '22 at 15:55
Yes, I did. However, I get empty query results. So I thought I am missing smt that is not mentioned in that doc. – user19717254 Aug 18 '22 at 07:34

How can I use Prometheus Histogram to get latency/response time of an application?

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