# Trackable / re-usable configuration

**URL:** <https://meta.discourse.org/t/trackable-re-usable-configuration/44901>\
**Category:** Self-hosting\
**Created:** [27 Mayo, 2016 13:43 UTC](https://meta.discourse.org/t/trackable-re-usable-configuration/44901 "2016-05-27T13:43:51Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam)\
**Post date:** [20 Junio, 2016 01:01 UTC](https://meta.discourse.org/t/trackable-re-usable-configuration/44901/5 "2016-06-20T01:01:01Z")

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> [@enricostn](#):
>
> Hi @sam, could you please point me to a complete list of all the available settings we can use in app.yml?

These can be changed by ENV vars

> <https://github.com/discourse/discourse/blob/main/config/discourse_defaults.conf>

(change to upper case and add DISCOURSE\_ in front so for example `rtl_css` becomes `DISCOURSE_RTL_CSS`)

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