To get the result you want you need a “define” like that somewhere in your templates:

{{- define “GetEnv” }}
{{- $name := index . 0 }}
{{- $ := index . 1 }}
// Here try to find $name in $.Values.env first, then fall back to $.Values.tiers (or vice versa)
{{- end }}

And config.cfg should look like that:

NAME={{ include “var1” $ }}
SURNAME={{ include “var2” $ }}
JOB={{ include “var3” $ }}

Now include config.cfg in one of your templates:

kind: ConfigMap
data: {{ include “config.cfg” $ | nindent 2 }}