System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP)

Keyserver and publickey Entry in the Switch File

Caution – Caution –

You must restart the keyserver after you make a change to nsswitch.conf.

The keyserver reads the publickey entry in the name service switch configuration file only when the keyserver is started. If you change the switch configuration file, the keyserver does not register the changes until the keyserver is restarted.