Using Bootstrap To Override Properties

If you enable config first bootstrap, you can let client settings override configuration from the config server by placing two properties within the application’s configuration that reside in the external environment repository (for example, Git, Vault, SVN, and others) used by the config server.

spring.cloud.config.allowOverride=true
spring.cloud.config.overrideNone=true

With Bootstrap enabled and these two properties set to true you will be able to override configuration from the config server within the clients application configuration.