New user account
In CentOS 6.5, i would do the following to setup sudo for users -
useradd -G wheel -c "John Smith" jsmith
uncomment this line - %wheel ALL=(ALL) ALL
usermod -G wheel -a jsmith
restart sshd - /etc/init.d/sshd restart
ssh login as jsmith and type 'sudo bash'
When i try the same thing in CentOS 7, i see the following in /var/log/secure -
Oct 8 05:20:00 localhost sudo: jsmith : u
I'm having trouble authenticating services using uid for authentication, which I thought was the standard method for authentication on the user.