Jim McNamara wrote:
> 
> I didn't think it was incompatible with CentOS, I'm just stuck in the 
> position of having done this probably 20 times on Debian without issue 
> (past the first) and now with my first try on CentOS, I'm floundering 
> badly. 

There should not be any issues with Centos.  Are you starting with the 
3.1 code from http://backuppc.sourceforge.net/?

> When I try to run the BackupPC script I still get the common "premature 
> end of script headers" message, and the most telling thing I find is in 
> the suexec.log file, which complains when I try to run BackupPC_Admin or 
> the testsetuid script from the wiki -

Suexec?  Are you trying to make apache do the suid part instead of perl?

> <http://192.168.0.231>] Premature end of script headers: BackupPC_Admin
> [Mon Dec 15 10:38:09 2008] [error] [client 192.168.0.231 

Is this supposed to be the default page?

> [root@telephony logs]# tail suexec.log
> [2008-12-15 10:37:00]: uid: (1010/backuppc) gid: (1010/1010) cmd: 
> BackupPC_Admin

Why is suexec involved?

> [2008-12-15 10:37:00]: file is either setuid or setgid: 
> (/var/www/cgi-bin/BackupPC_Admin)

Yes, the config.pl script should have installed it mode 04554.
It needs to be group-readable by apache, owned by backuppc and suid.

> I would love to find the suexec config, but google seems to indicate 
> that if you're unhappy with suexec, your only option is to compile your 
> own and remove the packeged version. That seems odd, but this whole rpm 
> thing seems fairly odd as well.

What made you think you even needed suexec?  Let apache execute perl as 
a normal cgi, let perl handle doing suid on a perl script.  You 
shouldn't even need to touch httpd.conf if you drop the BackupPC_Admin 
program under /var/www/cgi-bin which is already configured for program 
execution.  If you want to use mod_perl it becomes more complicated, but 
you don't spend enough time in the web interface to need the extra speed.


-- 
   Les Mikesell
      lesmikesell AT gmail DOT com

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