After connecting SQL Server to your .NET Core application on Linux, you can get the following error when running your application:

Build started...
Build succeeded.
Microsoft.Data.SqlClient.SqlException (0x80131904): **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

In order to solve this, simply add the following parameter in the connection string used to connect your app to SQL Server: Integrated Security=false; as follows:

"ConnectionStrings": {
    "DefaultConnection": "Server=localhost;Database=MyDatabase;Trusted_Connection=True;Integrated Security=false;User Id=MyUserId;Password=MyPassword"