I am trying to connect the spring boot application I have created locally to an aws serverless aurora database.
I have added the maven dependency:
<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.18</version> </dependency>
As well as created an application.properties file:
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect spring.jpa.show-sql=true spring.jpa.hibernate.ddl-auto=update spring.datasource.url=jdbc:mysql://myawsclusterlink:3306/mycluster spring.datasource.username=myusername spring.datasource.password=mypassword spring.datasource.hikari.minimum-idle=0 spring.datasource.hikari.maximum-pool-size=10 spring.datasource.hikari.connection-timeout=60000 spring.datasource.hikari.max-lifetime=90000 spring.datasource.hikari.idle-timeout=90000
I have also created a VPC inbounds group for the db to allow incoming traffic from my IP address.
My Issue is that that when I run the app, my connection keeps failing with an error message:
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
I would like to know where is the problem. Is my url wrong? Have I not enabled something on aws? Is there something missing in my code?
Also, I don’t really know how to test and see where the problem is coming from in this case.
Changing from serverless to provisioned aurora and enabling public access solved the issue