Spring cloud config client is not getting/loading configuration files from config server after upgrading to 2.4.0 - spring

Question

spring-cloud-config-client is not able to read configuration files from the spring-cloud-config-server after upgrading to 2.4.0 with spring-cloud version 2020.0.0-M6

Answer 1

From spring-boot 2.4.0 version, bootstrapping is not enabled by default, need to add the following dependency in your build.gradle
implementation 'org.springframework.cloud:spring-cloud-starter-bootstrap'
or pom.xml
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
</dependency>

Answer 2

Adding to the application file (.properties or .yml) the property spring.config.import , with this it is not necessary to change/add the project's dependencies
Example:
To connect with the default location of "http://localhost:8888" or de value defined in the property spring.cloud.config.uri
spring.config.import=optional:configserver:
For more info:
https://docs.spring.io/spring-cloud-config/docs/3.0.0/reference/html/#config-data-import

Answer 3

For new spring cloud versions please don't use the legacy dependency spring-cloud-starter-bootstrap instead you need to use application.yml/application.properties instead of bootstrap.yml/bootstrap.properties and then set into that file the following properties:
spring:
config:
import: configserver:${your_config_server_url} # example: import: configserver:http://192.168.0.4:8080
cloud:
config:
username: ${your_config_server_auth_user} # This is required only if your config server use authentication
password: ${your_config_server_auth_password} # This is required only if your config server use authentication