Restart postgres in php as nobody

Hi all,

I don't know if this is do-able but any suggestions would be appreciated.

I have an restart_psql.sh that takes in an argument -F or -S that executes
the start of stop option of postgres.

I am trying to restart postgres with the option -F when running the php
script via browser as nobody. I have exhausted the following possiblities:

1. system("sudo /etc/rc.d/init.d/postgresql stop");
This doesn't do anything because it doesn't display the message the
database is shutting down or in production state
And also in auth.log it is asking for the password because I didn't sudo
on user nobody.

2. I have tried using setuid on the file restart_psql.sh but unfortunately
it doesn't seem to be forcing the execution as root it still show the user as
nobody when I include whoami in the sh file.

3. I have also tried add nobody to the sudoer file but only allowing to
execute a specific command /etc/rc.d/init.d/postgresql. This also didn't
show progres because it is still asking for the password of nobody in auth.log

Does anybody know if this is possible or is there a better way of doing this?

Thanks

--
Linh Luong