Bug 1294210

Summary: Set "KeepAlive On" in Apache httpd default configuration
Product: Red Hat Enterprise Linux 5 Reporter: Federico Leva <federicoleva>
Component: httpdAssignee: Luboš Uhliarik <luhliari>
Status: CLOSED CURRENTRELEASE QA Contact: BaseOS QE - Apps <qe-baseos-apps>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 5.11CC: jorton
Target Milestone: rc   
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2016-01-04 10:40:10 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Federico Leva 2015-12-25 12:57:01 UTC 
Apache webservers from RHEL, CentOS etc. override the default apache configuration and use "KeepAlive Off" instead of "KeepAlive On".
https://httpd.apache.org/docs/2.2/mod/core.html#keepalive

This has a significant performance cost, see for instance http://www.webpagetest.org/result/151225_S7_D1V/4/details/#connectionView

The problem may have been fixed in version 7 but should be backported to previous versions.

Version-Release number of selected component (if applicable):

Long-standing configuration override according to multiple sources. Seen in most RHEL apache 2.0 and 2.2 webservers online; I couldn't find a website using 2.3 or 2.4.

According to https://access.redhat.com/solutions/445713, RHEL 7 ships Apache 2.4 by default; https://www.linode.com/docs/websites/lamp/lamp-on-centos-7 and bug 1243887 imply that "KeepAlive On" is default (only) starting with 7,

How reproducible:

Always, with default configuration.

Steps to Reproduce:

Install apache, use default configuration, open any URL and see the webserver response.

Actual results:

Find "Connection: close" in it.

Expected results:

"KeepAlive On" by default in httpd configuration.
Comment 1 Joe Orton 2016-01-04 10:40:10 UTC 
That's correct, KeepAlive is on by default from RHEL7.  There are no plans to change the default KeepAlive configuration at this point in the RHEL5 or RHEL6 lifecycle.