Native support for Prometheus metrics in GKE
Earlier this year, we announced native support for Google Kubernetes Engine (GKE) custom metrics. This milestone allowed you to scrap external adapters and instead collect autoscaling metrics directly from your pods. By routing these metrics straight to the Horizontal Pod Autoscaler (HPA), we cut metrics reading latency down to 5 seconds.
Today, we are excited to introduce built-in support for processing Prometheus metrics, allowing you to use expressive PromQL queries to customize autoscaling triggers. With this update, HPA can now directly process autoscaling metrics present in Cloud Monitoring using Google Managed Service for Prometheus. Reading metrics from these backends will not require third-party adapters, leveraging the AutoscalingMetric integration used to support pod-level metrics. After the preview, we plan to support self-hosted Prometheus servers as we move to general availability.
The challenge: Setting up Cloud Monitoring metrics
Support for custom pod-level metrics made autoscaling more straightforward, but production workloads often need...
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