Working with Spring Cloud Configuration

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-config-server</artifactId>
</dependency>

@SpringBootApplication
@EnableConfigServer
public class ConfigServerApp { public static void main(String[] a) { SpringApplication.run(ConfigServerApp.class, a); } }

server.port: 8888
spring:
  cloud:
    config:
      server:
        git:
          uri: https://github.com/example/config-repo
          search-paths: '{application}'
          default-label: main
          username: ${GIT_USER}
          password: ${GIT_TOKEN}

# application.yml (client)
spring:
  application.name: orders
  config.import: "optional:configserver:http://config-server:8888"
  cloud:
    config:
      profile: ${spring.profiles.active:default}
      fail-fast: true
      retry: { initial-interval: 1000, max-attempts: 6 }

@RestController
@RefreshScope
public class FeatureController {
  @Value("${feature.banner:hello}") String banner;
  @GetMapping("/banner") public String banner() { return banner; }
}
// POST /actuator/refresh to re-read external config

# server requires JCE + encrypt.key (or asymmetric keystore)
curl http://config-server:8888/encrypt -d 'mySecret'
# → AQAB... place in repo as: db.password: '{cipher}AQAB...'

spring:
  profiles.active: vault
  cloud:
    config:
      server:
        vault:
          host: vault.local
          port: 8200
          scheme: https
          backend: secret
          default-key: application

# Server
spring.security.user.name: configadmin
spring.security.user.password: ${CONFIG_ADMIN_PASSWORD}
# Client
spring.cloud.config.username: configadmin
spring.cloud.config.password: ${CONFIG_ADMIN_PASSWORD}

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>