string value replacement from the lable value

[MySQL tute's (Mohan Kumar HG)]

Hi Team,

we have a custom metrics and it shows the output like "LOW-003-MK_dwm"

stack_info{job="LOW-003-MK_dwm"}

and i want to remove the 4 character and add the new character called "-node-exporter".

so finally my output would look like   " LOW-003-MK-node-exporter  "

stack_info{job="LOW-003-MK-node-exporter  "}

can some some please help to write the query.

[Daz Wilkin]

Perhaps:

- source_labels: [job]
  target_label: job
  regex: LOW-003-MK_[a-z]{3}
  replacement: LOW-003-MK-node-exporter

You can plug the above into https://relabeler.promlens.com

[Brian Candler]

Beware that "job" is a reserved label name in Prometheus; it is only supposed to be used for the name of the scrape job which obtained the metric.  You can overwrite it, but it's at your own peril.