Unable to connect to Ms sql db after deployment of application in Posit connect

Hello all,
I am unable to connect to database after deploying application on posit connect. we have to use window authentication for database connection.

I have created dsn in odbc.ini for connection.
Driver=ODBC Driver 18 for SQL Server

After that we have tested the connection with
isql -v test

This work perfectly!!

But after deploying shiny app where data is import from ms sql db , connection gives error.

We understand that we need create Kerberos ticket which is created by:
kinit serviceaccount@domain.com

Warning: Error in: nanodbc/nanodbc.cpp:1118: 00000: [Microsoft][ODBC Driver 18 for SQL Server]SSPI Provider: No Kerberos credentials available (default cache: KCM:) [Microsoft][ODBC Driver 18 for SQL Server]Cannot generate SSPI context.

Kindly support to figure out the issue.