How many vasd processes should be running?
ps -ef | grep vasd may show multiple vasd child processes.
Two or three child processes are not a cause for concern and may be normal or even required depending on the version and configuration of VAS.
NS is controlled by netgroup-mode = <> in vas.conf, but its default is variable.
Depending on version it defaults to NIS, OFF, or it depends on if vasypd is installed.
4.0 - 4.0.3
There are 5 vasd processes. The Parent, a Dispatcher, a DB Handler, and two LDAP Handlers.
There are a minimum of 6 and a maximum of 9 vasd processes.
The Parent, a Dispatcher, a DB Handler, an auth handler, two permanent LDAP Handlers and up to three temporary LDAP Handlers.