Reliable Insights

A blog on monitoring, scale and operational Sanity

February 24, 2020

Regex Selectors are a Smell

Have you ever found yourself having to keep on updating and tweaking certain regexes in PromQL?

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February 17, 2020

New Features in Prometheus 2.16.0

Prometheus 2.16.0 is now out, following on from 2.15.0 with many fixes and improvements.

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February 10, 2020

Testing SSH of hosts from Consul

We've previously looked at scraping services from consul and ssh checks. How can we combine those?

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February 3, 2020

Get thee to a NaNnary

NaN is just a number in Prometheus.

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January 27, 2020

Getting metrics from Apache logs using the grok exporter

Not all applications produce useful metrics, but some of them do produce logs.

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January 20, 2020

Graphite’s summarize and smartSummarize in PromQL

How do you convert summarizeinto PromQL?

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January 13, 2020

Optimising index memory usage for blocks

One of the big changes in Prometheus 2.15.0 was reduced memory usage for indexes.

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January 6, 2020

Network interface metrics from the node exporter

Along with many others, the node exporter exposes network interface metrics.

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December 30, 2019

Left joins in PromQL

Just because SQL isn't in the name doesn't mean that you can't do SQL-like joins with PromQL.

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December 23, 2019

New Features in Prometheus 2.15.0

Prometheus 2.15.0 is now out, following on from 2.14.0 with many fixes and improvements.

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