Azure App Service can't access Azure SQL DB, but local machine works. Allow-All-IP rule already in place.

Question

Currently working on an ASP.NET web application. I would like to deploy to Azure App Service but when running on App Service, the connection to my Azure SQL server can not be found.

When I run on my local machine, the connection to the Azure SQL server works. I can also connect to my Azure SQL server via SQL Management Studio.

On the Azure SQL server I have set up a Firewall rule to allow all IP addresses, and allowed access to Azure services:

I have done considerable searching for solutions to this problem over the past couple days, but I can't find a solution.

Answer 1

After spending a few hours tweaking my appsettings.json , Azure firewall settings, permissions, ... it ended up being that I had my App Service > Settings > Configuration > Connection String previously set. And Azure seems to completely ignore your appsettings.json in this case.

Answer 2

I have added the Virtual IP for the Firewall rule and it fixed the issue.

For more troubleshooting use App insights. Most of the time it shows the exact issue.

Answer 3

You can easy find the app service all outbound ip address on properties

but you need setting all of the outbound ips in your firewall

Answer 4

I ran into what could be this same problem. Changing the server admin password resolved the issue. I was able to connect running locally, but the published application was unable to log in with the server admin credentials until I reset the server admin password.

Answer 5

在 sql 数据库概述页面上的 azure prortal 上单击设置服务器防火墙允许 Azure 服务和资源访问此服务器应设置为是，其余设置应默认保存更改它适用于我的 asp.net 和 sql db位于 azure env

Answer 6

Works with the solution given by @Tuco. Just an additional setting to remember, as you're mentioning azure sql, don't forget to change the type to SQLAzure.