Prometheus templating - sample

[Yann “Stratanic” .mabilat]

Hello, 

I use last version prometheus and alertmanger -(Nov 2023)

I'm try use Prometheus templating. anyone can explain how define template?

many sample here in the official website,

https://prometheus.io/docs/prometheus/latest/configuration/template_examples/

but they dont describe where put the template exactly ? which file ?

{{/* Define the template */}} {{define "myTemplate"}} do something {{end}} {{/* Use the template */}} {{template "myTemplate"}}

Ok, but where, put this ?

I can declare template file in /.../alertmanager.yml   (conf file)

templates:
- /etc/prometheus/templates/*.tmpl

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Final goal : reduce a text in rule of alertmanager (for alerta)

I hope to get help with this case. thanks all.