Reliable Insights

A blog on monitoring, scale and operational Sanity

October 1, 2018

What is a job label for?

The job label is one of the labels your targets will always have. So how can you use it?

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September 24, 2018

Alerting on approaching open file limits

In a previous post we looked at dealing with reaching the open file limit. How about alerting before it happens?

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September 17, 2018

New Features in Prometheus 2.4.0

Prometheus 2.4.0 is now out, following on from 2.3.0 back in June with many fixes and improvements.

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September 10, 2018

Using the textfile collector from a shell script

The textfile collector is handy for monitoring machine-level cronjobs. How would you go about that?

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September 3, 2018

Deleting time series from Prometheus

If a misconfiguration leads to unwanted time series, it'd good to know how to remove them.

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August 27, 2018

Dealing with “too many open files”

While not a problem specific to Prometheus, being affected by the open files ulimit is something you're likely to run into at some point.

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August 20, 2018

Using the Java client with Gradle

While the Java client library uses pom.xml and Maven, there's nothing stopping you from using other tools such as Gradle

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August 13, 2018

Why predeclare metrics?

The standard way to use metrics in Prometheus is to declare them at file level, before using them. Why?

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August 6, 2018

Aggregating across batch job runs with push_time_seconds

For counting how many times a thing has happened you can use a counter and rate(), but that doesn't work across batch jobs.


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July 30, 2018

Prometheus: Up and Running is out

After many months of work, Prometheus: Up&Running is now available for purchase!

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