Reliable Insights

A blog on monitoring, scale and operational Sanity

August 26, 2019

Adding TLS to Prometheus with Caddy

Prometheus doesn't come with server-side security features out of the box, but there's many options out there to provide them.

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August 19, 2019

New Features in Prometheus 2.12.0

Prometheus 2.12.0 is now out, following on from 2.11.0 with many fixes and improvements.

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August 12, 2019

What range should I use with rate()?

Choosing what range to use with the rate function can be a bit subtle.

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August 8, 2019

Analysing data from Grafana graphs in R

PromQL is superb for metrics alerting and graphing needs, for heavier statistical work there are better options.

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August 5, 2019

Putting queues in front of Prometheus for reliability

On a regular basis a potential Prometheus user says they need a different architecture to make things reliable or scalable. Let's look at that.

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July 29, 2019

Step and query_range

Graphs from Prometheus use the query_range endpoint, and there's a non-trivial amount of confusion that it's more magic than it actually is.

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July 22, 2019

How should pipelines be monitored?

For online serving systems it's fairly well known that you should look for request rate, errors and duration. What about offline processing pipelines though?

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July 15, 2019

New Features in Prometheus 2.11.0

Prometheus 2.11.0 is now out, following on from 2.10.0 with many fixes and improvements.

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July 8, 2019

Switching between Prometheus servers in Grafana using data source variables

Having to maintain dashboards for every Prometheus server you have would be a bit annoying. Thankfully Grafana has a feature for this.

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July 1, 2019

Why can’t I use the nodename of a machine as the instance label?

The machine knows its own name, couldn't Prometheus use it?

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