Overview

Linkerd provides extensive observability functionality. It automatically instruments top-line metrics such as request volume, success rates, and latency distributions. In addition to these top-line metrics, Linkerd provides real time streams of the requests for all incoming and outgoing traffic.

To help visualize all this data, there is a CLI, dashboard and out of the box Grafana dashboards.

Some deep dive topics on metrics:

Prometheus

Prometheus collects and stores all the Linkerd metrics. It is a component of the control plane and can be integrated with existing metric systems, such as an existing Prometheus install.

Proxy Metrics Reference

The Linkerd proxy natively exports Prometheus metrics for all incoming and outgoing traffic.