Reliable Insights

A blog on monitoring, scale and operational Sanity

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 9, 2019

PromQL Subqueries and Alignment

Subqueries were added to PromQL a while back, but there's more to this feature than it'd seem.

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December 2, 2019

Target labels, not metric name prefixes

Services are not distinguished by their metric names in Prometheus.

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November 25, 2019

Filesystem metrics from the node exporter

The node exporter exposes filesystem metrics out of the box, so let's take a look.

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November 18, 2019

Evaluating Performance and Correctness

There's more to selecting a piece of software than headline numbers. Read more

November 11, 2019

New Features in Prometheus 2.14.0

Prometheus 2.14.0 is now out, following on from 2.13.0 with many fixes and improvements.

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November 4, 2019

Don’t cross the screams: Monitoring across failure domains

Scraping targets across datacenters will make things better, right?

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October 28, 2019

Getting Cloudwatch data into Prometheus

Among the many integrations for Prometheus is the Cloudwatch exporter.

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October 14, 2019

Environment substitution with Docker

Prometheus leaves configuration and runtime management to their respective roles. How might you integrate those?

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