I am also having this issue. You can reproduce by doing the following:
Head to this project from Microsoft and “Deploy to Azure” https://devblogs.microsoft.com/premier-developer/sonarqube-hosted-on-azure-app-service/
Once its up and running, stop the application and create an Azure SQL Instance. They have instructions on how to setup the sql instance with SonarQube. Sometimes I need to clear out my temp folder to troubleshoot when I can’t start up SonarQube.
I followed the instructions and even opened up the temporary sql server open to all of the internet and I cannot get it to communicate to the Azure Web App. I also set the compatibility level of the sql server to a supported version just in case.
Is there any way to get more verbose logging? I’m thinking that there may be something about Azure SQL that may not be compatible with this version of SonarQube.