How to increase max file descriptor (nofile ulimit) for Apache httpd on RHEL 6

Solution Verified - Updated -

Issue

  • How to increase max file descriptor for httpd ?
  • "Too many open files" error occurs.
  • Getting errors like below:
(24)Too many open files: couldn't set child process attributes: /var/www/cgi-bin/test.cgi
(24)Too many open files: couldn't spawn child process: /var/www/cgi-bin/test.cgi

Environment

  • Red Hat Enterprise Linux 6
  • httpd

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