1If you store accounts in external place and want to use password
2authentication for sudo, you must create /etc/pam.d/sudo file like:
3
4=====================================================================
5#
6# PAM configuration for the "sudoers" service
7#
8# auth
9auth		include		system
10
11# account
12account		include		system
13
14# session
15session		include		system
16
17# password
18password	include		system
19=====================================================================
20