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Full Discussion: Ulimit Inheritance
Operating Systems Linux Red Hat Ulimit Inheritance Post 302842745 by Don Cragun on Friday 9th of August 2013 09:21:25 PM
Old 08-09-2013
Check out the POSIX exec family of functions man page. This will tell you what is inherited by the new process image after an exec.

Note that if the mysqld and httpd daemons are running as root (or on privilege aware systems; running with all privileges) they are perfectly capable of changing anything that will be inherited by the new process image between the time it fork()s and the time it calls an exec family function so that mysql or apache will run with whatever user-id, group-id, and process limits that the daemon thinks they should have.
 

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RunApp::Apache(3pm)					User Contributed Perl Documentation				       RunApp::Apache(3pm)

NAME
RunApp::Apache - Apache control for RunApp SYNOPSIS
use RunApp::Apache; $apache = RunApp::Apache->new (root => "/tmp/apache_run", report => 1, apxs => '/usr/local/sbin/apxs', # httpd => '/usr/local/sbin/httpd', required_modules => ["log_config", "alias", "perl", "mime"], config_block => q{ [% IF AP_VERSION == 2 %] eval { use Apache2 }; eval { use Apache::compat }; [% END %] <Location /myapp> AllowOverride None SetHandler perl-script PerlSetVar approot [% cwd %] PerlHandler MyApp Options +ExecCGI </Location> }); DESCRIPTION
This is the class for defining a apache web server to be used in RunApp. CONSTRUCTOR
new (%arg) Required arg: root The root for the apache instance. apxs httpd If "apxs" is specified, "httpd" will be derived from it. required_modules A arrayref to the apache modules required. config_block The config block that will be the extra block in the template used by RunApp::Template::Apache. CTL The class for handling apachectl. The default is RunApp::Control::AppControl. You can also use RunApp::Control::ApacheCtl. CONF The class for handling apache config. The default is RunApp::Template::Apache. It is used in the "build" phase of RunApp SEE ALSO
RunApp, RunApp::Control::Apache, RunApp::Template::Apache, App::Control AUTHORS
Chia-liang Kao <clkao@clkao.org> Refactored from works by Leon Brocard <acme@astray.com> and Tom Insam <tinsam@fotango.com>. COPYRIGHT
Copyright (C) 2002-5, Fotango Ltd. This module is free software; you can redistribute it or modify it under the same terms as Perl itself. perl v5.8.8 2008-01-09 RunApp::Apache(3pm)
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