Linux 7: polkit-agent-helper-1: pam_authenticate failed: Authentication failure

Problem:

[feijiangnan@server01 ~]$ systemctl stop crond.service
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to stop 'crond.service'.
Authenticating as: root
Password:
polkit-agent-helper-1: pam_authenticate failed: Authentication failure

Investigation:

# grep feijiangnan /etc/passwd
feijiangnan:x:1024:1025::/home/feijiangnan:/bin/bash






# usermod -u 500 feijiangnan

[root@server01 pam.d]# id feijiangnan
uid=500(feijiangnan) gid=1025(feijiangnan) groups=1025(feijiangnan),1024(sysadmin)

Verification:

[feijiangnan@server01 ~]$ sudo systemctl restart crond.service
[sudo] password for feijiangnan: