FerryDocs
ConceptsEnvironment & env groups

Set variables

Set, remove and list the environment variables of a service.

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Terminal
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Each has its own . Ferry has no secret files: each setting is an environment variable.

Change the variables

Terminal
ferry env set api LOG_LEVEL=info 'DATABASE_URL=${{datastore.app-db.connectionString}}'
ferry env unset api LOG_LEVEL
ferry env api                    # the service's own variables
ferry env ls api --effective     # merged with its env groups

ferry env set and ferry env unset the service. Thus the change applies.

  • Add --no-restart to only save.
  • Add --follow to see the restart.

Use single quotes around ${{…}}

Put a value that contains ${{…}} between single quotes. Then your does not change it.

Environment & env groups

A service gets its variables from Ferry, from env groups and from its own settings. Ferry resolves references at start.

Limits of keys and values

A key, a value and the full set of variables each have a largest size.

On this page

Change the variables