Can I use PHP to reboot a Linux server or reboot dhcp?

Question

I tried some command, for example system(reboot) exec(reboot) , system("/ect/init.d/networking restart"); but nothing happens

How can i do this?

Answer 1

You will need to add the apache user to sudoers using NOPASSWD and provide only access to ie restart, and then start the system ("sudo reboot");

For sudoers file:

www-data reboot = NOPASSWD: /sbin/reboot

This will give apache access to reboot your server, but it will remember that all users on the system will then be able to reboot.

Answer 2

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Answer 3

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Answer 4

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Another sudo alternative for some systems is dbus. With the correct dbus privileges, you can send instructions to restart, for example.

dbus-send --system --print-reply --dest="org.freedesktop.Hal" /org/freedesktop/Hal/devices/computer org.freedesktop.Hal.Device.SystemPowerManagement.Shutdown

It works from the command line, and I believe dbus bindings are available for php.

Answer 5

Try the following:

<?php
shell_exec("/usr/sbin/reboot");
exec("/usr/sbin/reboot");
system("/usr/sbin/reboot");
?>

See here for more details:

http://www.linuxquestions.org/questions/linux-newbie-8/shutdown-and-reboot-linux-system-via-php-script-713379/

Answer 6

on RHEL, I had to comment out a line that requires tty in the sudoers configuration file:

#Defaults requiretty