Sorry for the wrong link https://medium.com/@zhimin.wen/custom-prometheus-metrics-for-apps-running-in-kubernetes-498d69ada7aa
On Tue, Mar 3, 2020, 10:04 PM Murali Krishna Kanagala < [email protected]> wrote: > I think this page can help you to write the sd config for kubernetes pods. > https://github.com/nlighten/tomcat_exporter > > For scraping only master pod of a given service it should have a special > label so that Prometheus can discover it. An alternative approach would be > a stateful set where every pod in a service can be given different labels. > > Did you try reading about kube dd config to scrape service endpoints? If > that is possible then you will be scraping the master pod if you scrape the > service endpoint. > > > > On Fri, Feb 28, 2020, 12:01 AM SS. OO. <[email protected]> wrote: > >> Hi! >> >> I have a Kubernetes/Prometeus newbie question. >> >> I have a Kubernetes application that I want to scale up via Horizontal >> Pod Autoscaler based on custom metrics reflecting the length of the app's >> work queue backlog in the app's internal database. >> >> I can expose the metrics on a pod port in Prometheus format, so there is >> more than one scrape endpoint for fail-over purposes. However I do not want >> Prometheus to call the scrape endpoint on every pod's instance, only one >> instance at a time and failover to another instance only if necessary. All >> instance endpoints report the same data, and calling them in parallel would >> serve no useful purpose and only increase a workload on storage queries >> behind the app runtime. >> >> Right now the application is packaged as a Kubernetes Deployment. Do I >> need to convert it for the above as a Service, or can Prometeus understand >> intrinsically or be instructed in the configuration that only one instance >> is to be called at a time? >> >> Also, can someone please provide an example of the snippet I need to >> insert into >> >> https://github.com/prometheus/prometheus/blob/master/documentation/examples/prometheus-kubernetes.yml >> so Prometheus picks up the endpoint? Assuming, for example, it is exposed >> on pod port 3333, path /metrics, service/pod named ABC or with label >> appname=LABC? >> Or do I simply tag the pod/service/deployment with some tag and Prometeus >> starts to collect on it? If yes, how do I pack the endpoint >> port+protocol+path into the tag? >> >> Thanks for the advice. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Prometheus Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/prometheus-users/cabf6ba3-79c8-4f5e-865d-1fc51ba52c72%40googlegroups.com >> <https://groups.google.com/d/msgid/prometheus-users/cabf6ba3-79c8-4f5e-865d-1fc51ba52c72%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CAKimyZuSwA9V2EQcc%2BcGLak%3D2mQcLT06A6s99yWVGQta2AHoUA%40mail.gmail.com.
