Apache Perl Internal Server Error
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of questions I get from my visitors at thesitewizard.com, I can see that one of the most dreaded errors that newcomers to CGI face is the "500 Internal Server Error". It is one of the most uninformative perl 500 internal server error error messages that can mean anything from an improper upload to a bug in perl cgi internal server error the script. This article attempts to give you some concrete, practical steps that you can take to narrow down the problem and apache internal server error htaccess hopefully eliminate it. For the uninitiated, a "500 Internal Server Error" is a message much like the common "404 File Not Found" message. You get the latter message in your browser when you try to access
Apache Internal Server Error Log
a non-existent web page. You get the "500 Internal Server Error" message when you try to run a script with problems. For the purposes of this article, I am assuming that your CGI script is a Perl script, by far the most commonly available on the Internet. We will try to eliminate the most common errors first (and the easiest-to-eliminate ones): Location Did you upload your scripts into the right place? This apache internal server error php is not as obvious as it may seem. Some servers are configured to run your CGI scripts anywhere. Others will only run it when it is installed in a particular directory. It is not just a matter of creating a "cgi-bin" directory — for example, some hosts configure the server so that it will run scripts only from a particular directory outside the web directory structure (for security reasons). Your web page will still call the script "/cgi-bin/script.pl" but the server maps it to the actual directory. You will have to upload it in the right directory, regardless of what your web page calls it. Find out such information from your web host's documentation. File Upload Mode Did you upload your Perl script in ASCII mode? Your FTP client may have uploaded the script in binary mode if you did not take any special action. Perl scripts are ASCII files, and since different operating systems have different ways of representing the end of line character (eg Unix uses a line-feed, Windows uses a carriage-return and line-feed pair), it is important that you set the uploading method to ASCII, so that line-end translation is performed. Re-upload the script, this time making sure that it was uploaded in Text or ASCII mode. Do not use any au
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of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Why does my Perl CGI script cause a 500 internal server error? up vote 3 down http://www.thesitewizard.com/archive/servererror.shtml vote favorite I get a 500 internal server error when I try to run the code below in a web server which supports perl: #! /usr/bin/perl use LWP; my $ua = LWP::UserAgent->new; $ua->agent("TestApp/0.1 "); $ua->env_proxy(); my $req = HTTP::Request->new(POST => 'http://www.google.com/loc/json'); $req->content_type('application/jsonrequest'); $req->content('{ "cell_towers": [{"location_area_code": "55000", "mobile_network_code": "95", "cell_id": "20491", "mobile_country_code": "404"}], "version": "1.1.0", "request_address": "true"}'); my $res = $ua->request($req); if ($res->is_success) { print $res->content,"\n"; } else { print $res->status_line, "\n"; http://stackoverflow.com/questions/2872040/why-does-my-perl-cgi-script-cause-a-500-internal-server-error return undef; } But there is no error when I run the code below: #! /usr/bin/perl use CGI::Carp qw(fatalsToBrowser); print "Content-type: text/html\n\n"; print "\n"; print "
Hello World!
\n"; foreach $key (sort keys(%ENV)) { print "$key = $ENV{$key}
" ; } print "\n"; print "\n"; So I think there is some problem with my code. When I run the first perl script in my local machine with the -wc command, it says that the syntax is OK. Help me please. perl cgi share|improve this question edited May 21 '10 at 0:26 brian d foy 86.7k24149388 asked May 20 '10 at 8:19 Nitish 60151127 1 When you have trouble with a Perl CGI script, go through my "Troubleshooting Perl CGI Script": stackoverflow.com/questions/2165022/… –brian d foy May 21 '10 at 0:26 I don't know whether this helps but I got my perl-cgi script working after I put shebang line #!C:\Strawberry\perl\bin\perl –user966588 Mar 11 '12 at 14:42 add a comment| 4 Answers 4 active oldest votes up vote 3 down vote accepted I assume you're running the first script as a CGI script? You need to include the content type: print "Content-type: text/plain\n\n"; before any other output (change text/plain to text/html or whatever is appropriate, of cours
Configuring Apache to permit CGI Writing a CGI program But it's still not working! What's going on http://httpd.apache.org/docs/current/howto/cgi.html behind the scenes? CGI modules/libraries For more information See alsoComments Introduction Related ModulesRelated Directivesmod_aliasmod_cgimod_cgidAddHandlerOptionsScriptAlias The CGI (Common Gateway Interface) defines a way for https://talk.plesk.com/threads/500-internal-server-error-when-trying-to-run-a-cgi-script.58121/ a web server to interact with external content-generating programs, which are often referred to as CGI programs or CGI scripts. It is the simplest, and most common, way to internal server put dynamic content on your web site. This document will be an introduction to setting up CGI on your Apache web server, and getting started writing CGI programs. Configuring Apache to permit CGI In order to get your CGI programs to work properly, you'll need to have Apache configured to permit CGI execution. There are several ways to internal server error do this. Note: If Apache has been built with shared module support you need to ensure that the module is loaded; in your httpd.conf you need to make sure the LoadModule directive has not been commented out. A correctly configured directive may look like this: LoadModule cgid_module modules/mod_cgid.so On Windows, or using a non-threaded MPM like prefork, A correctly configured directive may look like this: LoadModule cgi_module modules/mod_cgi.so ScriptAlias The ScriptAlias directive tells Apache that a particular directory is set aside for CGI programs. Apache will assume that every file in this directory is a CGI program, and will attempt to execute it, when that particular resource is requested by a client. The ScriptAlias directive looks like: ScriptAlias "/cgi-bin/" "/usr/local/apache2/cgi-bin/" The example shown is from your default httpd.conf configuration file, if you installed Apache in the default location. The ScriptAlias directive is much like the Alias directive, which defines a URL prefix that is to mapped to a particular directory. Alias and ScriptAlias are usually used for directorie
the new Plesk version coming out later this year. Visit this thread for more details. 500 Internal Server Error when trying to run a cgi script Discussion in 'Plesk for Linux - 8.x and Older' started by MaRiOs, Jul 23, 2005. Page 1 of 2 1 2 Next > MaRiOs Guest 0 Hello ppl, I need some more automatic things to put in plesk so I said I must begin learning perl to write my own scripts. I made a very easy one that just prints 2 words and i uploades to the cgi-bin area... (its the first time Im using the cgi-bin). so when i try to run the script i get : 500 Internal Server Error .... the link is : http://www.mariosmaravelias.info/cgi-bin/test.cgi what am I doing wrong? MaRiOs, Jul 23, 2005 #1 jamesyeeoc Guest 0 Could you post this script? Have you checked your log files? /var/log/messages /home/httpd/vhosts/mariosmaravelias.info/statistics/logs/access_log /home/httpd/vhosts/mariosmaravelias.info/statistics/logs/error_log jamesyeeoc, Jul 23, 2005 #2 MaRiOs Guest 0 #!/usr/bin/perl $name="Hello World"; print $name; i cantbe more simple than that MaRiOs, Jul 23, 2005 #3 jamesyeeoc Guest 0 And what about your log files, any errors or messages relating to this problem?? You should be seeing 'Premature end of script headers: test.cgi' in your error_log file Common solutions to this are: 1) Copy psa-suexec to suexec: cp /usr/sbin/psa-suexec /usr/sbin/suexecClick to expand... 2) Permissions: chmod -R 755 /home/httpd/vhosts/yourdomain.com/cgi-binClick to expand... 3) Ownership: chown -R ftpusername : psacln /home/httpd/vhosts/yourdomain.com/cgi-binClick to expand... (without the spaces around the colon : ) 4) File is ASCII: If you uploaded the file using FTP, it may have been uploaded in binary mode instead of ASCII, reupload it as ASCII. Then restart apache: service httpd restartClick to expand... In some cases, a whole server restart is necessary, not just apache restart. These have solved the same problem for countless others here on the forum. jamesyeeoc, Jul 23, 2005 #4 MaRiOs Guest 0 Ok I did these : 1)cp: `/usr/sbin/psa-suexec' and `/usr/sbin/suexec' are the same file 2)Done 3)Done 4) i didnt upload it , I loged in ssh and i made the file with nano editor. 5) ok i will try to restart it. about the error log files i dont see anythin about the script.. the only error i see is : [Mon Jul 25 12:29:05 2005] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!? [Mon Jul 25 12:29:05 2005] [notice] Apache/2.0.46 (Red Hat) configured -- resuming normal operations MaRiOs, Jul 25, 2005 #5 ylikone Guest 0 Ok, I had the same problem and finally got my cgi scripts to work. Here are the things I had to do: 1. make