# Variables in config files

**URL:** <https://discuss.prometheus.io/t/variables-in-config-files/3440>\
**Category:** General Help/Support\
**Created:** [August 5, 2025, 8:50am UTC](https://discuss.prometheus.io/t/variables-in-config-files/3440 "2025-08-05T08:50:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rdiez](https://avatars.discourse-cdn.com/v4/letter/r/7c8e57/32.png) [@rdiez](https://discuss.prometheus.io/u/rdiez)\
**Post date:** [August 5, 2025, 8:50am UTC](https://discuss.prometheus.io/t/variables-in-config-files/3440/1 "2025-08-05T08:50:15Z")

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Hi all:

I have some values repeated all over the configuration (in prometheus.yml) like this:

```auto
- job_name: 'blackbox-http'
  scrape_interval: 2m

- job_name: 'blackbox-http-15m'
  scrape_interval: 2m

- job_name: 'blackbox-http-check-redirect'
  scrape_interval: 2m

```

Is there any way I could create a constant or variable called “my\_interval = 2m”? This way, I can adjust the value in just one place for all variants.

Thanks in advance,  
rdiez