Red Hat Bugzilla – Bug 632407
proxy: error reading status line from remote server
Last modified: 2013-07-03 09:12:37 EDT
Description of problem:
When attempting to access a backend IIS server through an Apache
server running mod_proxy, the client receives a 502 error and
lines smilar to the following appear in the Apache error log:
[error] [client 10.1.2.3] proxy: error reading status line from
remote server example.com
[error] [client 10.1.2.3] proxy: Error reading from remote server
returned by /example
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Configure mod_proxy to proxy an IIS server
2. Attempt to access the IIS server through mod_proxy
This is the same problem as:
Although Red Hat Bug 466723 would seem to indicate that this was
resolved in RHEL 5.3, the patch included in the Apache Bug is not
included in the latest version of the httpd package in RHEL 5.
The RHEL 5.3 update to httpd rebased mod_proxy to upstream version
2.2.9, but comments in the Apache Bug would seem to indicate
that this wasn't resolved until the release of Apache 2.2.10.
This version: httpd-2.2.3-31.el5_4.4 is significantly out of date. There is at one fix to the proxy code since then. Can you verity this issue is still present with the latest package? (httpd-2.2.3-43.el5_5.3)
The problem was reported in httpd-2.2.3-31.el5_4.4, but I've verified that the patches in Apache bug 37770 are not present in the latest RHEL 5 package (httpd-2.2.3-43.el5_5.3). The customer has verified that the problem was resolved in httpd-2.2.3-43.el5_5.3 with the patches the Apache bug, but I'll find out whether or not they tried httpd-2.2.3-43.el5_5.3 without the patches.
I double checked with the customer and they did try the stock httpd-2.2.3-43.el5_5.3 version.
This stock version would still get errors like:
(104)Connection reset by peer: proxy: error reading status line from remote server signweb-prodlike-sso.na.bestbuy.com, referer: http://signweb-prodlike.na.bestbuy.com/accessviaweb/web_dsignshop/MobileSignAudit.asp
proxy: Error reading from remote server returned by /accessviaweb/web_dsignshop/MobileSignAuditComplete.asp, referer: http://signweb-prodlike.na.bestbuy.com/accessviaweb/web_dsignshop/MobileSignAudit.asp
They can confirm that going from the stock httpd-2.2.3-43.el5_5.3 to the same version plus the two patches resolved the proxy errors.
Sorry I have to reopen this case. How did the customer apply the two patches? Did they build the mod_proxy*.so by themselves? Do we have any plan to include the patches on RHEL5?
I'm also getting same kind of error while using the mod_proxy..
[error] [client x.x.x.x] (104)Connection reset by peer: proxy: error reading status line from remote server 127.0.0.1, referer: http://abc.xyz.com/ABC/webcontents/common/jsp/ABCmain.jsp
[root@abc]rpm -qa |grep httpd
Still there in httpd-2.2.3-45.el5
[Fri Feb 18 04:04:50 2011] [error] [client 126.96.36.199] (70014)End of file found: proxy: error reading status line from remote server aa.yy.zz
[Fri Feb 18 08:17:37 2011] [error] [client 188.8.131.52] (70014)End of file found: proxy: error reading status line from remote server xx.yy.zz, referer: http://xx.yy.zz/xx/schnellsuche.do?Nachname=xx
[Fri Feb 18 08:32:59 2011] [error] [client 184.108.40.206] (70014)End of file found: proxy: error reading status line from remote server aa.yy.zz, referer: http://xx.yy.zz/xx/verarbeiteBuchForm.do?nachname=&vorname=&dezernat=xx&fktgr=&telNr=&gebaeude=Br&raumNr=&stichwoerter=&action=Suche+starten
[Fri Feb 18 08:37:59 2011] [error] [client 220.127.116.11] (70014)End of file found: proxy: error reading status line from remote server aa.yy.zz, referer: http://xx.yy.zz/xx/schnellsuche.do?Nachname=xx
[Fri Feb 18 09:10:13 2011] [error] [client 18.104.22.168] (104)Connection reset by peer: proxy: error reading status line from remote server aa.yy.zz, referer: http://xx.yy.zz/xx/Login
For anybody seeing this problem, a test repo is available
with experimental and *unsupported* packages which contain
a fix for this issue:
Would this issue occur regardless of On Off of the "KeepAlive" switch ?
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.
The problem still persists! Please reopen as i can't do this!
If it is not reopend in one week i will open a new bug-ticket, could file a ticket via subscription too...
Created attachment 517359 [details]
log of proxy-server
# yum list httpd
httpd.x86_64 2.2.3-53.el5 installed
Hello Mr. Slomma - The best way to get your issue resolved would be to open a support case via the Red Hat Customer Portal (http://access.redhat.com/).