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Znarkus
Asked: 2014-09-16 07:20:00 +0800 CST

Sudo without password issue

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Having a problem with sudo. As the user forge I want to be able to run sudo service php5-fpm reload without having to type a password. I've tried all of the variants below.

forge   ALL=NOPASSWD: /usr/bin/service php5-fpm reload
forge   ALL=NOPASSWD: /usr/bin/service
forge   ALL=(ALL:ALL) NOPASSWD: /usr/bin/service
forge   ALL=(ALL:ALL) NOPASSWD: /usr/bin/service php5-fpm reload

But it keeps prompting me for a password. Tried loggin in and out.

# tail /var/log/auth.log
Sep 16 09:28:19 apps sudo: pam_unix(sudo:auth): conversation failed
Sep 16 09:28:19 apps sudo: pam_unix(sudo:auth): auth could not identify password for [forge]

This is the whole file.

#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults        env_reset
Defaults        mail_badpass
Defaults        secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification
Cmnd_Alias SERVICES = /sbin/service, /sbin/chkconfig

# User privilege specification
root    ALL=(ALL:ALL) ALL
#forge  ALL=NOPASSWD: /usr/bin/service

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d

Using Ubuntu 14.04.1 LTS

$ which service
/usr/sbin/service

The problem:

$ sudo service 
[sudo] password for forge:

This is what worked.

visudo:

# Cmnd alias specification
Cmnd_Alias SERVICES = /sbin/service, /sbin/chkconfig/, /usr/bin/service, /usr/sbin/service

/etc/sudoers.d/forge:

forge   ALL = (ALL) NOPASSWD:   SERVICES

Tried to move the content of the forge file into visudo, but that didn't work.

sudo

2 Answers

  1. You're giving the wrong PATH to the binary. The which output shows that it's /usr/sbin/service, but you keep specifying /usr/bin/service in your sudoers entries.

    Try

    forge   ALL=(ALL)     NOPASSWD: /usr/sbin/service
    • 2
  2. Best Answer

    Try following:

    /etc/sudoers:

    # grep -B1 'Cmnd_Alias SERVICES' /etc/sudoers
## Services
Cmnd_Alias SERVICES = /sbin/service, /sbin/chkconfig
#

    /etc/sudoers.d/forge:

    # cat /etc/sudoers.d/forge
forge   ALL = (ALL) NOPASSWD:   SERVICES
#

    test

    [forge@localhost ~]$ sudo service
Usage: service < option > | --status-all | [ service_name [ command | --full-restart ] ]
[forge@localhost ~]$

    Adjust CORRECT path to your service if needed, this may vary depends on your distribution, to find correct path run following:

    $ which service
/sbin/service
$
    • 1