Setting the file. One moment.
Skill 111 · Create Quarkus Project
Subchapter 111.1
references/configuration.mdMarkdown1 KBView on GitHub
Quarkus reads (highest priority first): system properties, environment variables, .env, config/application.properties, src/main/resources/application.properties (or .yaml with quarkus-config-yaml).
Built-in profiles: (), , (packaged app).
devquarkus:devtestprodquarkus.http.port=8080
%dev.quarkus.log.level=DEBUG
%prod.quarkus.http.cors.enabled=falseEnv var mapping: quarkus.http.port -> QUARKUS_HTTP_PORT. Activate a profile with -Dquarkus.profile=staging or QUARKUS_PROFILE.
@ConfigMapping(prefix = "app.mail")
public interface MailConfig {
String from();
@WithDefault("25") int port();
Optional<String> replyTo();
}Inject it via the constructor. Use @ConfigProperty(name = "app.name") only for single values. Validate with Bean Validation annotations on mapping methods (requires hibernate-validator).
Never commit secrets. Use ${DB_PASSWORD} expressions, env vars, Kubernetes secrets, or a vault extension. Keep a .env file (git-ignored) for local overrides; Quarkus also loads it from the working directory of a packaged app, so never deploy it.