Which metric types should we use?

If this is the first time you're using Prometheus hooked into metrics from Kube API, the sheer amount might be overwhelming. On top of that, consider that the configuration excluded many of the metrics offered by Kube API and that we could extend the scope even further with additional exporters.

While every situation is different and you are likely to need some metrics specific to your organization and architecture, there are some guidelines that we should follow. In this section, we'll discuss the key metrics. Once you understand them through a few examples, you should be able to extend their use to your specific use-cases.

The four key metrics everyone should utilize are latency, traffic, errors, and saturation.

Those four metrics been championed by Google Site Reliability Engineers (SREs) as the most fundamental metrics for tracking...