Drupal Atlanta Medium Publication: Configuration Split in Drupal 8 and 9. How to Add Config To Your Live Environment

How do enable that module for just the live site again?

Let’s first start off with understanding what the Configuration Split module does. In simple terms, it allows you to have different site configurations for your different environments. For example, you want to turn off the Views UI module on your live site. Or you want to turn off your Google Analytics module on your local, dev, and test environments but still have it active on your live site.

There are so many great articles on setting up configuration split. Here are a few good ones that I suggest reading to get you caught up to speed.

So how do you test and or create new configuration settings for your live environment while working on your local computer?

In other words, say that you have already set up your config-splits a few months ago but now your client wants to add email support using the SMTP module but you only want this enabled on the live site so you don’t accidentally send out an email from your local site to 1000’s of users. ps — I have done it before Ouch 🙂

Well in order to add to the live configuration you need to enable the live config split. The natural first step is to go to the config-split UI and disable the develop configuration and enable the live config. Click Click Click. But nothing. Such a simple thing but why in the heck are you not able to enable the live configuration?

Ohhh snap, that settings.php file got me again.

The settings.php Environment Gotcha

One thing all of these tutorials have in common is that they show you how to set the active and inactive config-splits in your settings.php. For some servers, the code is slightly different but the idea here is that Drupal needs to somehow know what environment you are on in order to import the right configuration.

Yep! That darn settings.php file. The reason you cannot activate the live configuration settings in the UI is that the settings.php file overrides the UI click clicks. So you need to go to your file and either temporarily comment out that code or just reverse the logic. So here is what I do.

  1. Reverse the logic in the settings.php file. For me, I just have to switch out a ! in my code so that my dev and live environments are reversed.
  2. drush cr — Cache rules everything around me — Clear it
  3. Enable my new SMPT module.
  4. Edit the live config split and check the box next to live
  5. drush cex — configuration export
  6. git checkout settings.php so that my file revers back to my old settings
  7. drush cr— you know the drill clear that cache
  8. Uninstall the SMTP module
  9. drush cex — to export the uninstalled module settings to your dev config
  10. git commit my changes

I then check my setting by doing a drush csim live. This command imports the settings from the live config. You can also check your config directories manually or with a git statusto ensure there are new files in both of your dev and live directories.

If any of you have a better way to enable and add some new configuration to the live environment without all of the steps, help a brother out and let me know in the comments.


Configuration Split in Drupal 8 and 9. How to Add Config To Your Live Environment was originally published in Drupal Atlanta on Medium, where people are continuing the conversation by highlighting and responding to this story.


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