Hello all,
I am attempting to help a non-profit organization setup a new server
and migrate over their old stuff. One of the things they want to use
is a database application using Ruby on Rails.
This system is an up to date FC4 distribution running Plesk 8.1
control panel, instead of the "standard" FastCGI module, they use one
called mod_fcgid that is supposed to play better with Plesk. Plesk
also says that enabling RoR is a simple matter of enabling FastCGI
support, all I can say to that is it isn't as simple as they say.
Just do a Google on "Plesk Ruby Rails" and you will see how much
trouble people have gone through trying to get this to work in that
environment (but I digress...)
I have been having a hell of a time attempting to get this to work
and have come down to the point where I believe I have diagnosed the
problem to be that both mod_fcgid and mod_cgi choke and exit giving
an error that says "Premature end of script headers"
I have verified that Ruby and Rails are working using the test
browser they provide, the application functions fine when I do that.
When attempting to use Apache to serve the application via either
FastCGI or regular CGI, it simply will not work. This is not only
true of this Ruby-based application but also for any script or
program I attempt to execute via FastCGI or regular CGI (Perl,
binary, shell script, etc.).
I do get errors in my httpd error log when using FastCGI but I have
no idea what they are really telling me. The underlying cause of the
error is not given in the errors. Here is what I typically get when I
try to access the script:
[Thu Mar 15 14:43:20 2007] [notice] mod_fcgid: server
/var/www/vhosts/example.org/httpdocs/fighter/public/dispatch.fcgi(29959)
started
[Thu Mar 15 14:43:21 2007] [notice] mod_fcgid: server
/var/www/vhosts/example.org/httpdocs/fighter/public/dispatch.fcgi(29960)
started
[Thu Mar 15 14:43:22 2007] [notice] mod_fcgid: server
/var/www/vhosts/example.org/httpdocs/fighter/public/dispatch.fcgi(29963)
started
[Thu Mar 15 14:43:25 2007] [notice] mod_fcgid: process
/var/www/vhosts/example.org/httpdocs/fighter/public/dispatch.fcgi(29963)
exit(communication error), terminated by calling exit(), return code: 120
[Thu Mar 15 14:43:25 2007] [notice] mod_fcgid: process
/var/www/vhosts/example.org/httpdocs/fighter/public/dispatch.fcgi(29960)
exit(server exited), terminated by calling exit(), return code: 120
[Thu Mar 15 14:43:25 2007] [notice] mod_fcgid: process
/var/www/vhosts/example.org/httpdocs/fighter/public/dispatch.fcgi(29959)
exit(server exited), terminated by calling exit(), return code: 120
If I use regular CGI, all I get is the premature end of script
headers error without any further information.
I am at a loss on how to proceed from here.
If anyone can help me figure out how to configure this system to get
CGI and FastCGI working, I would greatly appreciate it. I have been
working on this for nearly a week and it is making me crazy.
Dragon
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