Filters File

If you want to ensure that certain units are always included or excluded, you can use a filters file.

Filters files are simple text files that contain filter expressions delimited by newlines. Empty lines and lines starting with # are ignored.

filters.txt

./subtree/**
!./subtree/dependency/**

terragrunt run --all --filters-file filters.txt -- plan

Running Terragrunt like this is equivalent to running it with the following flags:

terragrunt run --all --filter './subtree/**' --filter '!./subtree/dependency/**' -- plan

Tip

If you want to automatically configure certain filters to be applied by default, you can name the filters file .terragrunt-filters.

Terragrunt will automatically read filters from this file if it exists in the current working directory.