What is the best-practice authentication service for Db2 pureScale?

Db2 pureScale requires a low-latency, continuously available authentication service for the database. The best practice is to use local authentication services for each host, so that any failure affects only one host and limits the impact on the cluster.

Procedures for creating the required users are available for both AIX and Linux environments.
Important: Remote LDAP authentication services can adversely affect your Db2® pureScale® environment. Unavailability or delays in LDAP authorizations can cause poor performance and hang-like symptoms in the databases of the Db2 pureScale instance. These issues can lead to a total cluster shutdown that, if lasting for more than one minute, can require manual intervention to restart the cluster.