How to find and replace group of characters using regex in template variable grafana?

Grafana Elasticsearch
1

I am using a template variable to list down the values which are fetches from elasticsearch. The template variable having the values like

 string1_dev_01_08_2020  
 string1_prod_01_08_2020
 string2_prod_02_08_2020

I want to replace all the dev and prod to * in regex field on template variable page

Final value something like

 string1_*_01_08_2020  
 string1_*_01_08_2020
 string2_*_02_08_2020

How can I achieve this in grafana?

Thanks in advance.

2

Nope, you can’t. Grafana just displayed the data from the source.
If you need to change the value, change from elasticsearch index. You can use mutate in logstash

mutate {
	 gsub => [
           "message", "string1_dev_", "string1_*_ ",
           "message", "string1_prod_", "string1_*_ ",
           "message", "string2_prod_", "string2_*_ "
 	 ]
   }

But I suggest to copy the original fields to other field as necessary and you still have the original value.