Password-based authentication
Without any authentication parameters, password-based authentication is used with a random password created for you.
Azure CLI: az ad sp create-for-rbac –name ServicePrincipalName –role Contributor
This example adds the Reader role and removes the Contributor one:
az role assignment create –assignee APP_ID –role Reader
az role assignment delete –assignee APP_ID –role Contributor
Sign in using a service principal
Test the new service principal’s credentials and permissions by signing in. To sign in with a service principal, you need the appid, tennant and credentials.
To sign in with a service principal using a password:
az login --service-principal --username APP_ID --password PASSWORD --tenant TENANT_ID