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Plesk and 500 Internal Server Error and uid/gid mismatch

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September 15th, 2004
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This is for future reference.

If you are getting a 500 internal server error for your cgi-bin, have all the permissions set right and are using Plesk (or any other suexec virtual apache platform) the following command might be your answer.

SSH in and type the following:

chown root:apache /usr/sbin/suexec

That should resolve most of the uid/gid mismatch issues and the 500 internal server issues. The technical explanation is that suexec runs the calling program as the owner/group that the suexec program is saved under and apache will run most scripts with a suexec (in a virtual server environment) to sanity check script execution and prevent malicious scripters. Plesk will sometimes save this file under the wrong credentials. Thus the headaches.

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  1. Martin says:

    Hi Mark,

    Maybe you are familiar with the following: I keep getting 404’s on calling Perl scripts in my Plesk cgi-bin. The scripts are there, they have their 755’s and have been tested in a Cpanel environment.

    chown root:apache /usr/sbin/suexec doesn’t help.

    If you have any suggestions then I’d be grateful.

    Martin
    Paintings.n@me

    [EDIT] Sorry, this looked too much like an ad!



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