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Values files per environments

We can use tag to use values files per environments (staging/preprod/prod).

Commands

cue eval -c *.cue -t staging
cue export *.cue -t staging

cue eval -c *.cue -t preprod
cue export *.cue -t preprod

cue eval -c *.cue -t prod
cue export *.cue -t prod

Explanations

We will tag to create optional values files, these files will be use if a specific tag is present.

We add at the first line of the file:

@if(myenv)

and we set the tag myenv in the command line:

cue eval -c *.cue -t myenv

In the example, we have 5 files:

  • template.cue: the template file
  • common.cue: the values to use in every environment and default values
  • staging.cue: the files to load with -t staging
  • preprod.cue: the files to load with -t preprod
  • prod.cue: the files to load with -t prod

Important:

If you want to set a default value, you can use string | *"default" in common.cue. If you set it in common (like labelX), you can't change it.