Based on the security requirements for the domain, you can set the service principal level to one of the following levels:

Node Level

If the domain is used for testing or development and does not require a high level of security, you can set the service principal at the node level. You can use one SPN and keytab file for the node and all the service processes on the node. You must also set up a separate SPN and keytab file for the HTTP processes on node.

Process Level

If the domain is used for production and requires a high level of security, you can set the service principal at the process level. Create a unique SPN and keytab file for each node and each process on the node. You must also set up a separate SPN and keytab file for the HTTP processes on node.

The Informatica domain requires the service principal and keytab file names to follow a specific format. To ensure that you follow the correct format for the service principal and keytab file names, use the Informatica Kerberos SPN Format Generator to generate a list of the service principal and keytab file names in the format required by the Informatica domain.

The Informatica Kerberos SPN Format Generator is shipped with the Informatica services installer.