stack-user-passwordless-sudo-ubuntu1404-trusty

HOW TO add user stack with passwordless sudo UBUNTU [tested 14.04]

$ sudo useradd stack

$ sudo usermod -a -G sudo stack

$ sudo vim  /etc/sudoers.d/myOverrides

$ sudo less  /etc/sudoers.d/myOverrides

stack ALL=NOPASSWD: ALL

$ sudo visudo -f /etc/sudoers.d/myOverrides

$ sudo su - stack

$ whoami

stack

$ pwd

/

$ sudo

usage: sudo -h | -K | -k | -V
usage: sudo -v [-AknS] [-g group] [-h host] [-p prompt] [-u user]
usage: sudo -l [-AknS] [-g group] [-h host] [-p prompt] [-U user] [-u user] [command]
usage: sudo [-AbEHknPS] [-r role] [-t type] [-C num] [-g group] [-h host] [-p prompt] [-u user] [VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AknS] [-r role] [-t type] [-C num] [-g group] [-h host] [-p prompt] [-u user] file ...

$ sudo mkdir -p /home/stack

$ sudo chown stack:stack /home/stack

logout

ubuntu$ sudo su - stack

$ whoami

stack

pwd

/home/stack

$ sudo -l
Matching Defaults entries for stack on devstack:
    env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin

User stack may run the following commands on devstack:
    (ALL : ALL) ALL
    (root) NOPASSWD: ALL