New Blog Post: Collecting Kubernetes Metrics with OpenTelemetry Collector

[danielbdias]

Hi folks! I have a use case for using OTel Collector to actively get Kubernetes metrics, and I wanted to check with you if it makes sense to submit a blog post about it.

Here are the article details:

Provisory Title: Collecting Kubernetes Metrics with OpenTelemetry Collector

Description:

One of OTel Collector's powerful features is its receivers and exporters, which allow you to define multiple processes to collect telemetry data and send it to different data stores.
In this article, I want to show an application of the kubeletstats and k8s_cluster receivers to collect metrics from KubeAPI and KubeletAPI about how your nodes and containers are working and send them to Prometheus.
Also, I want to highlight how we can build a "Collector" architecture to do these operations.

Technologies used:

• Prometheus
• Kubernetes
• OTel Collector

SIG / Sponsors: I'm not sure yet, should it be the maintainers of the both receivers?

[theletterf]

Looks good to me!

@open-telemetry/collector-approvers What do you think?

[svrnm]

@danielbdias thanks for proposing this blog post. I would like to explore if we can have this as a page for docs (e.g. under https://opentelemetry.io/docs/kubernetes/) rather as a blog post, would you be open to that idea?

[danielbdias]

Sure!

[svrnm]

@danielbdias awesome, I suggest that you make an early draft PR against the docs, such that @open-telemetry/operator-approvers and @open-telemetry/collector-approvers can have an early look

[jpkrohling]

@avillela, I think you covered this before, didn't you?

[danielbdias]

@avillela and @jpkrohling, please let me know if you did something. My idea is to show how to set up and collect K8s metrics from KubeAPI and Kubelet API.

I can submit a draft for you at the start of the next week.

[jpkrohling]

I have a cookbook showing this and an in-flight blog post at Grafana Labs somewhat covering this (with k8s_events) based on the same recipe from the cookbook: https://github.com/jpkrohling/otelcol-cookbook/blob/main/ratatouille/kubernetes/otelcol.yaml