[prometheus-users] Adding a label based on metric value

[Kalle Narinen]

HI, we would like to add a status label based on metric value.

Is there a way to do this?

-Kalle

[Brian Candler]

What is it you're trying to achieve?

By changing the set of labels on a metric, you've changed it to a completely different timeseries.  This is probably not what you want.  (The timeseries is *defined* by the bag of labels on it).

You can add labels and annotations to alerts: this is standard functionality of alerting rules.

[Kalle Narinen]

hi, metric is having values that indicates status and we would like to convert them somehow to be more human readable e.g. to be consumed by statusMap Grafana dashboard.

I don't mind them being then different metric when adding e.g a status label.

-Kalle

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[Brian Candler]

Grafana can do that for you.  This is for metric "apcups_status_numeric" that returns 0, 1, 2, 3 etc:

Corresponding panel configuration - under "Visualization"

[Kalle Narinen]

hi, yes, I found that this is possible for single stat but I forgot to mention that I need them in the graph.

-Kalle

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[Brian Candler]

What if you configure a single panel with multiple queries, each with their own legend?

Otherwise, if you have 10 different status values I think you should be able to use recording rules to make 10 different timeseries with different labels, which is what you originally asked for.

Conventionally, when representing data this way in prometheus, you'd make each series have value 0 or 1 at each instant (so every timeseries is contiguous, and you don't have issues around staleness).  I haven't tested it, but try something like:

groups:

  - name: foo

    rules:

      - record: foo:annotated

        expr: foo == bool 0

        labels:

          status: xxx

      - record: foo:annotated

        expr: foo == bool 1

        labels:

          status: yyy

      - record: foo:annotated

        expr: foo == bool 2

        labels:

          status: zzz

      ... etc

If you're going to do this, it may be better to modify the exporter if you can, since it will know better all the possible status values and labels.

[Kalle Narinen]

Ok, Thanks. I will try them out

Sent from my iPhone

On 2. Apr 2020, at 19.28, Brian Candler <b.ca...@pobox.com> wrote:



What if you configure a single panel with multiple queries, each with their own legend?

<grafana-multi-query.png>

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<grafana-multi-query.png>