LinuxQuestions.org - [SOLVED] NTP - I want use like common user

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NTP - I want use like common user

Ok i had wrote this script some time ago

Code:

cat /usr/bin/SincronizarHora.geb 

#!/usr/bin/env bash



echo '

Autor ----------------> Inukaze ( Venezuela )

Sitio ----------------> https://goo.gl/ij6WqW

Correo-E -------------> bloginukaze@gmail.com

Licencia -------------> GPL 2



******* Inicio : Acerca de este Guión ********



  Yo intento escribir guiones compatibles con

  Sistemas operativos Unix & POSIX , y otros

  Sistemas operativos que soporten bash



  Este archivo es un guion sencillo para

  Sincronizar la hora utilizando

  « ntpdate » (asi que debe estar instalado)



******** Fin : Acerca de este Guión **********'

sleep 3



#Determinar en que directorio estoy :

GUION=$(readlink -f "$0")

RUTA=$(dirname "$GUION")

ntpdate=$(whereis -B "/usr/sbin" "/usr/local/sbin" "/sbin" "/usr/bin" "/usr/local/bin" "/bin" -b ntpdate | grep -i "ntpdate" | cut -d " " -f02 | cut -c11-20)

service=$(whereis -B "/usr/sbin" "/usr/local/sbin" "/sbin" "/usr/bin" "/usr/local/bin" "/bin" -b service | grep -i "service" | cut -d " " -f02 | cut -c11-20)

rcntpd="/etc/rc.d/rc.ntpd"



if [ -z "$ntpdate" ]; then

        echo

        echo "ntpdate no esta instalado en tu sistema operativo GNU"

        echo "Por favor, instale primero « ntpdate »"

        echo

        exit 0

fi



#Slackware(64) :

if [ -d "/etc/rc.d" ];then

        if [ -f "$rcntpd" ]; then

                chmod +x "$rcntpd"

                "$rcntpd" "stop"

                #ntpdate -u 0.south-america.pool.ntp.org

                ntpdate -u time.nist.gov

                hwclock -w

                "$rcntpd" "start"

        fi

fi



#Debians :

if [ -z "$service" ]; then

        echo ""

else

        sudo service ntpd stop

        sudo su -c "rm -rf /etc/localtime" root

        sudo su -c "ln -s /usr/share/zoneinfo/America/Caracas /etc/localtime" root

        echo 'TZ='America/Caracas'; export TZ' >> "$HOME/.profile" ; source "$HOME/.profile"

        sudo update-locale LC_TIME=es_ES.UTF-8

        #ES#sudo su -c "cp -rf $PWD/usr/share/i18n/locales/es_ES /usr/share/i18n/locales/es_ES" root

        #ES#sudo su -c "cp -rf $PWD/usr/share/i18n/locales/es_ES@euro /usr/share/i18n/locales/es_ES@euro" root

        #ES#sudo su -c "cp -rf $PWD/usr/share/i18n/locales/es_VE /usr/share/i18n/locales/es_VE" root

        LANG="es_ES.UTF-8" ; export LANG="$LANG"

        LANGUAGE="es_ES.UTF-8" ; export LANGUAGE='"'"$LANGUAGE"'"'

        LC_ALL="es_ES.UTF-8" ; export LC_ALL="$LC_ALL"

#      ntpdate -u 0.south-america.pool.ntp.org ; hwclock -w

        ntpdate -u time.nist.gov ; hwclock -w

        sudo service ntpd start

fi



exit 0

right now i prefer use " Network Manager " for manual configuration IP inside the KDE Plasma Desktop [ Grafical Session ].

if i try ran commands like normal user :

Code:

su -c "gpasswd -a inukaze ntp ; gpasswd -a inukaze ntpd" root

Quote:

Contraseña:
Añadiendo al usuario inukaze al grupo ntp
gpasswd: el grupo «ntpd» no existe en /etc/group

Code:

rcntpd stop

Quote:

Stopping NTP daemon.../etc/rc.d/rc.ntpd: línea 15: kill: (1022) - Operación no permitida
rm: no se puede borrar '/run/ntpd.pid': Permiso denegado

if my user is part of ntp group, why not had permission to delete the file '/run/ntpd.pid' ?

Code:

ntpdate -u time.nist.gov

Quote:

28 Apr 17:51:02 ntpdate[3406]: step-systime: Operation not permitted

Code:

$rcntpd start

Quote:

Starting NTP daemon: /usr/sbin/ntpd -g -u ntp:ntp28 Apr 17:54:45 ntpd[3943]: must be run as root, not uid 1000

Code:

hwclock -w

Quote:

bash: hwclock: orden no encontrada

The hwclock command just can be use by the root ?

Ok why for just sync clock hour i need root permission ?

Which things i should edit for all users inside ntp group can use commands ; ntpd, hwclock

stop/start/restart/status ntp, ntpd, services.
can delete and create the file " /run/ntpd.pid "

/run is owned by root, so only root can remove /run/ntpd.pid. In Linux you must have write permissions on the directory in order to have the permission to remove a file from it, the permissions or the ownership of the file is immaterial.

But there are more fundamental issues here.

ntp uses port 123. For all practical matters: Linux allows only root-owned processes to bind to ports below 1024 (the actual permissions are based on Linux-specific "capabilities", but this gets too deep in the weeds here).

TLDR: you need to be root in order to start or stop ntpd. Non-root permissions won't be enough.

Add your user to the sudoers file, allow it to use ntpdate, and then use "sudo ntpdate -u time.nist.gov" instead.

Something like this should work (and not even ask for your inukaze account password):
# more /etc/sudoers.d/ntpdate
inukaze your-hostname-here = NOPASSWD: /usr/bin/ntpdate

For more information,
man sudo
man sudoers

Also, ntpd is a service you start once and let it do its thing; no need to keep restarting it.

Quote:

Originally Posted by HQuest (Post 6498899)

Yesterday i had do that, but my on my sudoers file, becuase when i make a custom file inside /etc/sudoers.d/ntp , the thing does not work i hope, but after i move the line to sudoers and using the command

Code:

visudo -c

to check the syntax i and notice i wrote bad in multiples times, things like the commands not should be write like "/sbin/hwclock", because does not work.

the line inside my sudoers file is :

Code:

%ntp Slack64 = NOPASSWD: /usr/bin/ntpdate, /usr/sbin/ntpdate, /usr/sbin/ntpd, /usr/sbin/ntpq, /sbin/hwclock

well the thing is when i try to run the command like my user :

Code:

ntpdate -u time.nist.gov

Quote:

29 Apr 16:13:04 ntpdate[3331]: Can't adjust the time of day: Operation not permitted

Why the error msg change ? , some hours ago was "step-systime : Operation not permitted"

Quote:

29 Apr 15:21:27 ntpdate[2665]: step-systime: Operation not permitted

after i do

Code:

su -c "ln -sf /sbin/hwclock /usr/bin/hwclock" root

after i edit my /etc/rc.d/rc.local and add the follow lines between the first lines :

Code:

# Sincronizar Hora durante el arranque : 

if [ -x /etc/rc.d/rc.ntpd ]; then

        /etc/rc.d/rc.ntpd stop

        /usr/sbin/ntpd/ntpd -gq > /dev/null 2>&1

        hwclock -w

        /etc/rc.d/rc.ntpd start

fi

> well the thing is when i try to run the command like my user :
>
> ntpdate -u time.nist.gov

Did you try `sudo ntpdate -u time.nist.gov`? Adding the custom sudoers file is the first part of the puzzle, but you still need to use `sudo` when running the command

Quote:

Originally Posted by vondyke (Post 6498950)

Code:

sudo ntpdate -u time.nist.gov ; sudo hwclock -w

Quote:

30 Apr 17:04:39 ntpdate[22694]: adjust time server 132.163.97.3 offset -0.001452 sec

Quote:

Originally Posted by inukaze (Post 6499128)

Code:

sudo ntpdate -u time.nist.gov ; sudo hwclock -w

That's good, right? Is this what you wanted to accomplish?

Quote:

Originally Posted by vondyke (Post 6499193)

That's good, right? Is this what you wanted to accomplish?

Yes. Sorry i forgot mark as solved.