Which of by/without and on/ignoring should you use?
Reliable Insights
A blog on monitoring, scale and operational Sanity
Prometheus 2.20 added a group aggregator. What is it for?
The node exporter exposes the current machine time.
You've seen metrics like prometheus_build_info, but why do they have a value of 1?
Have you ever found yourself having to keep on updating and tweaking certain regexes in PromQL?
NaN is just a number in Prometheus.
How do you convert summarizeinto PromQL?
Just because SQL isn't in the name doesn't mean that you can't do SQL-like joins with PromQL.
Subqueries were added to PromQL a while back, but there's more to this feature than it'd seem.
