production:
dataSource:
url: '${JDBC_CONNECTION_STRING}'
4.1.1 Options for the YML format Config
Version: 4.0.1
4.1.1 Options for the YML format Config
The application.yml file was introduced in Grails 3.0, and YAML is now the preferred format for configuration files.
Using system properties / command line arguments
Suppose you are using the JDBC_CONNECTION_STRING command line argument and you want to access the same in the yml file then it can be done in the following manner:
Similarly system arguments can be accessed.
You will need to have this in build.gradle to modify the bootRun target if grails run-app is used to start the application
bootRun {
systemProperties = System.properties
}
For testing the following will need to change the test task as follows
test {
systemProperties = System.properties
}
External configuration
Grails will read application.(properties|yml) from the ./config or the current directory by default.
As Grails is a SpringBoot configuration options are available as well, for documentation please consult: https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html#boot-features-external-config-application-property-files