How to connect ASP.Net Core to a SQL Server Docker container on Mac

Question

I am developing an ASP.Net core MVC application using Visual Studio 2017 on Mac. However, I am facing some problems to connect to an instance of SQL Server that is running on a Docker container.

This is the connection string I'm using:

"ConnectionStrings": {
    "myCustomConnString": "Server=localhost;Database=myDataBase;User Id=sa;Password=myPassw0rd;Trusted_Connection=True;MultipleActiveResultSets=true"
  }

And this is the error I am getting:

Cannot authenticate using Kerberos. Ensure Kerberos has been initialized on the client with 'kinit' and a Service Principal Name has been registered for the SQL Server to allow Kerberos authentication. ErrorCode=InternalError, Exception=Interop+NetSecurityNative+GssApiException: GSSAPI operation failed with error - An unsupported mechanism was requested (unknown mech-code 0 for mech unknown).

Using SQL Operation Studio, Azure Data Studio and/ or Visual Studio Code and passing the same parameters I can connect to the docker instance of SQL Server. But not when running the ASP.Net core app. So, I'm not sure if I am missing any additional parameter for the connection string.

Does anyone have try this before?

Regards!

Answer 1

I know that @MikePR 's comment serves as the answer, but I wanted to provide a more complete answer for the issue I had. I could not get dotnet ef database commands to execute evan after using the connection string with Trusted_Connection=false. With the help of this article, I was able to use this connection string:

"ConnectionStrings": {
    "myCustomConnString": "Server=localhost,1433\\Catalog=myDatabase;Database=myDatabase;User=username;Password=MYSecurePWD;"
  }

Now, my migrations run against the SQL Server in the docker container. Note that the article did not include using Trusted_Connection=false. I assume that false is the default.

Answer 2

I got the same issue, and it works simply by deleting Trusted_Connection=True; from the connection string