If you are using the git profile, you need to set a Git URI in your configuration. If you are using a native profile and have spring.cloud.config.server.bootstrap=true, you need to use a composite configuration.

I am trying to use S3 as backend for config server. Below is my bootstarp.yml looks like

spring:
  profiles:
    active: awss3
  cloud:
    config:
      profile: test
      label: sample-config
      server:
        awss3:
          region: us-east-1
          bucket: srikanth-sg-demo-config-server
        bootstrap: true

Here is the stack trace when I run my spring boot application

2020-06-02 14:47:44.050  INFO 15056 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.3.0.RELEASE)

2020-06-02 14:47:46.054  INFO 15056 --- [           main] b.c.PropertySourceBootstrapConfiguration : Located property source: CompositePropertySource {name='configService', propertySources=[MapPropertySource {name='application'}]}
2020-06-02 14:47:46.059  INFO 15056 --- [           main] c.s.java.ConfigserverdemoApplication     : The following profiles are active: awss3
2020-06-02 14:47:47.035  INFO 15056 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=7dab5c52-d735-3ddb-a753-639686d963c9
2020-06-02 14:47:47.131  INFO 15056 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-06-02 14:47:47.401  INFO 15056 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 7788 (http)
2020-06-02 14:47:47.418  INFO 15056 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-06-02 14:47:47.418  INFO 15056 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.35]
2020-06-02 14:47:47.541  INFO 15056 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-06-02 14:47:47.541  INFO 15056 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1466 ms
2020-06-02 14:47:47.901  INFO 15056 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-06-02 14:47:48.181  WARN 15056 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'healthIndicatorRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/LegacyHealthEndpointCompatibilityConfiguration.class]: Unsatisfied dependency expressed through method 'healthIndicatorRegistry' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthContributorRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthContributorRegistry]: Factory method 'healthContributorRegistry' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'configServerHealthIndicator' defined in class path resource [org/springframework/cloud/config/server/config/EnvironmentRepositoryConfiguration.class]: Unsatisfied dependency expressed through method 'configServerHealthIndicator' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.cloud.config.server.config.CompositeConfiguration': Unsatisfied dependency expressed through method 'setEnvironmentRepos' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultEnvironmentRepository' defined in class path resource [org/springframework/cloud/config/server/config/DefaultRepositoryConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: You need to configure a uri for the git repository.
2020-06-02 14:47:48.182  INFO 15056 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'
2020-06-02 14:47:48.185  INFO 15056 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2020-06-02 14:47:48.207  INFO 15056 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-06-02 14:47:48.210 ERROR 15056 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Invalid config server configuration.

Action:

If you are using the git profile, you need to set a Git URI in your configuration.  If you are using a native profile and have spring.cloud.config.server.bootstrap=true, you need to use a composite configuration.