'prometheus recording rule to map the label(instance)

In prometheus looking to map the label(instance) to account id & region name, currently its value is NLB instance=eks**.us_east1.amazonaws.com.

am looking to use something like below in recording rule but not getting there , need suggestion. record:label_values(Kube_node_info,instance) expr: label_replace(label_values(Kube_node_info,instance),"account_id",us_east1)



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