Recently, I decided to migrate the work from Apache windows to the Apache running on my Vmware fedora machine. Everything was supposed to work like a charm. Unfortunately, it did not. The perl in the cgi-bin directory was throwing internal server error 500. The apache error log indicated 'permission denied to create a socket', 'premature end of the script headers'. The stuff was supposed to be retrieved from postgres sql database by the perl thingy. It appeared to me that database server is not allowing my IP address to establish a connection, as recomended by pgadmin as well. After a successful entry of my IP in the conf file of postgres database server, problem still persisted. I tried almost everything, changing the file owner to apache, suexec in apache and hell lots of other possibilities. Then in the trial process I noticed a small pop up in the corner of the window, SELinux denial. SELinux is an enhanced feature in Linux, that can put restrictions on your applications in apache making database connection, nmap, access to network filesystem and lots and lots more. After giving apache persmission to make database connections, the error was resolved and application ran smoothly.
25 September, 2008
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