GCP Cloud SQL Connection Timeout implementing Spring Boot and JPA
I'm building a feature where I'm having a hard time understanding I'm working on a personal project and I'm experiencing connection timeout issues when my Spring Boot application tries to connect to a Cloud SQL instance. The application is using JPA with Hibernate for ORM, and I've configured the datasource in application.properties as follows: ```properties spring.datasource.url=jdbc:mysql://<CLOUD_SQL_IP>:3306/mydatabase spring.datasource.username=myuser spring.datasource.password=mypassword spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.jpa.hibernate.ddl-auto=update ``` However, when I start the application, I'm getting the following behavior after a few seconds: ``` org.springframework.beans.factory.BeanCreationException: behavior creating bean with name 'entityManagerFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is java.sql.SQLTimeoutException: Connect timed out ``` I have verified that my Cloud SQL instance is configured to allow connections from my application's IP address, and the necessary firewall rules are set up. I also checked the connection string to ensure it’s correct. I tried increasing the `connectionTimeout` parameter in the URL: ```properties spring.datasource.url=jdbc:mysql://<CLOUD_SQL_IP>:3306/mydatabase?connectTimeout=30000 ``` Despite these changes, the timeout scenario continues. I also tested the connection with a simple JDBC snippet, and it works fine, so it seems to be an scenario specifically with how Spring Boot is handling the connection. Has anyone encountered a similar question or have suggestions on what else I might try to resolve this timeout scenario? I'm working on a application that needs to handle this. For context: I'm using Java on Linux. This is for a mobile app running on Windows 10. Any ideas how to fix this? I'm working in a Ubuntu 22.04 environment. I'm open to any suggestions. Is this even possible?