Apache :: Header Field Exceeds Limit / Tomcat AJP

Feb 3, 2015

My configuration is Apache 2.2.3 using Tomcat - AJP with mod_proxy_ajp, mod_ssl.We have configured Kerberos but some users are getting an error - Size of a request header field exceeds server limit.

Users with headers above 8K are getting this error, users less than 8K can get in fine. How can I increase this header limit in Apache/Tomcat? I have tried multiple suggestions found on google and other sites.

Here is what I tried:

Adding the following to the http.conf
LimitRequestFieldSize 65536
ProxyIOBufferSize 65536

Adding the following to server.xml

editing a workers.propeties file, but we dont have any files on the server with that name.

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Apache :: Trying To Set Vary Header

Dec 19, 2013

mod_header is installed and I put this in my htaccess but it doesn't change the header.

<IfModule mod_headers.c>
<FilesMatch ".(htm|html|php)$">
Header append Vary: User-Agent

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Oct 22, 2014

I am attempting to add a header a number of requested urls i.e.[URL]...

I understand that this can be achieved by

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-using mod_headers to add a header based on the existence of an environment variable.

So far I can add the a new header thus

Header add RSS_FEED_URL "Akamai-Edge-Control"

How to achieve this.

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Dec 11, 2014

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Feb 16, 2014

I'm looking for a way to add a script in the header tag of a web page without using a CMS or anything like that.it should be the first script that is running when the page is rendered.I'm running Apache 2.2.25 and Tomcat 7.0.50 - both Win32 versions.

There are two reasons for an approach like that.

(1) - I expect it to work regardless the CMS I'm working with; the same expectation is for Tomcat and Java applications.
(2) - I'm able to start this as early as possible => includes monitoring the performance of the CMS itself.

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Apache Restarts After Client Send Request With No Header

Jul 14, 2008

I have a client who's Apache on a CPanel based VPS keep's restarting.

In the error log we recieve two of these lines

"client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFin "

Then the Apache will restart.

I have looked around and found some threads about this problem, but none explaining how to fix this.

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Oct 23, 2014

I am attempting to add a header to a number of requested urls i.e. domain/feeds/chicago, domain/feeds/*.I understand that this can be achieved by

•using mod_rewrite to set an environment variable
•using mod_headers to add a header based on the existence of an environment variable.

So far I can add the a new header thus Header add RSS_FEED_URL "Akamai-Edge-Control"

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Mar 4, 2014

We are trying to disable server info into response header.

Header unset Server
Header set Server "unknown"

It is not working.We have installed "Apache 2.4.6-x86 server" on Win 2008 R2 Standard server (64-Bit).

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Dec 5, 2014

I'm trying to perform SSO to my application. for my login i get an error "Size of a request header field exceeds server limit". I believe the header size got increased then the limit set in apache server. I'm guessing so.

the flow of request: Apache -> tomcat -> SAP Business Objects.

For my colleagues login the SSO works fine with out issue.

So, how to increase the HTTP header size. I'm bridging apache and tomcat using AJP connector. below is the AJP connector parameters in server.xml

<Connector port="8009" protocol="AJP/1.3" redirectPort="443" URIEncoding="UTF-8" enableLookups="false" connectionTimeout="20000"/>

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Apr 26, 2009

I have installed red5 war version at my tomcat webapps directory

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I'm setting up a web server that will only run jsp/servlet applications. It 'may' need SSL at some point.

Is there any point to having apache installed and linking tomcat through apache. As running tomcat on port 80 seems ok with no problems!?!

will linking apache to tomcat have any benefit?

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I have a webserver using apache 2.4.4 and 2 application servers with tomcat 7 on windows server 2008 R2 which uses VMWare ESX5.

I use juvmroute to load balance between these 2 application servers. but with no error in apache and tomcat log files, it can not connect to application servers. and i have to restart the apache service. and it crashes after almost 5 minutes.

This is the part of the access.log file where the crash started:

[Mon Aug 05 00:02:51.980503 2013] [mpm_winnt:notice] [pid 1036:tid 292] AH00422: Parent: Received shutdown signal -- Shutting down the server.
[Mon Aug 05 00:02:54.008507 2013] [mpm_winnt:notice] [pid 3416:tid 200] AH00364: Child: All worker threads have exited.
[Mon Aug 05 00:02:54.024107 2013] [mpm_winnt:notice] [pid 1036:tid 292] AH00430: Parent: Child process 3416 exited successfully.
[Mon Aug 05 00:08:12.932936 2013] [mpm_winnt:notice] [pid 2648:tid 296] AH00455: Apache/2.4.4 (Win64) configured -- resuming normal operations

[Code] .....

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May 13, 2013

Issue: Upgraded to Apache 2.4.4 and Tomcat 7.0.33. Accessing the website via HTTPS produces "Object not found" error. The error logs (server,tomcat,apache) show no errors. It was working with Apache 2.2

Server OS: Windows 2008
Apache: version 2.4.4
Tomcat: version 7.033
JRE: version 1.6.0_43

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Dec 5, 2010

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Dec 15, 2013

First time configuring Apache (2.2 w/ mod_jk) and when running locally (192.168.1.x), no problem.

When configuring from a DynDns through my UVerse router, I get several JS and CSS 'not found' and of course bad rendered site.

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We want to access our site www.domain.com (i.e. run on port 80). Please guide us it is possible or not?

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Jun 25, 2015

I must say that I tried a lot of possibilities but my knowledgment in Apache WS is not too much advanced.

Apache Web Server version: 2.2.22
OS: Centos 6 64 bits
Tomcat version: 7.0.57

What I need to achieve is the following:

I have some plain websites defined this way:

<VirtualHost *:80>
ServerAdmin example1@example1.com
DocumentRoot "/opt/sites/example1/"
ServerName example1.com
ErrorLog logs/example1-error_log
CustomLog logs/example1-access_log common
RedirectMatch permanent ^/(.*) http://www.example1.com/$1

[Code] ....

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Feb 20, 2013

I have an Apache Server (2.4.3) and a Tomcat Server (7.0.36) and have some Java Applications deployed.Everything works fine, but when we start a quite long Ajax process, I see in my Java Application, that a Ajax request is received and starts processing - everything fine. But during processing of the first request, I see a second request starts after 5 minutes.

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Exim From Field

Jan 14, 2007

I have a form on my web site that users can fill out to contact me. I just noticed that the e-mails I receive from this form do not have the headers I want. Here is an example:

User return e-mail address is user@hotmail.com I want the from field to be user@hotmail.com. However, I get:

From: nobody@server.myserver.com
Reply-To: user@hotmail.com

Is there any way I can change that behavior?

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Field 'row' Doesn't Have A Default Value

Nov 26, 2008

When I'm insert data through form coming following error.

Field 'row' doesn't have a default value

But When I'm ruing on Local host ( Local computer ) properly working. But it is not working on my server.

Please visit this video File. You can see my Error.www.visionlanka.com/20081124.avi

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Feb 4, 2015

Where does Plesk-12(Linux) WP Toolkit find the value for the "Name" field in the Toolkit display?

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Jan 6, 2008

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Jul 8, 2007

Im running the latest version of apache on my box and have 15 ip's on my box. Each ip goes to the site hosted on apache is there a way to limit it to one. Say for example i have these ips on my box -

How do i select one of those ips to go to the site and have the rest not go anywhere.

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Apache Slot Limit

Nov 25, 2008

I'm facing a very critical issue in my server and i think its kind of DDOS attack!

the server is running normal and then i noticed that the server load is going up till reaches about 400! and all the services went down!

the cause of this issue was the Apache...

I noticed that the normal SLOT ( Total megabytes transferred this slot ) is in the range between 0.1 and 0.5(max) but the upnormal when the server load went up each slot was in range between (150 : 200)!
my conclusion is that someone sending a large packets to the server...
is there a limitation for this slot for not going up in that way?
Server Version: Apache/2.2.9 (Unix) mod_ssl/2.2.9 OpenSSL/0.9.8b mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/ PHP/5.2.6

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Can I Limit Apache's Cpu Usage

Feb 2, 2007

I have a server running Apache 2 with php 5 as an apache module. There are 2 PHP scripts that get about 500k hits a day. These scripts have to parse data out of a remote webpage and display it on an image. They used to make loads go up to 40-50, but I have added a cache which only updates every 4 hours. This helped a lot, but loads are still around 10 when the script updates, and it slows down the server. Memory usage is fine.
The server is an AMD Athlon 64 2800+ with 1 gb of ram and an 80GB SATA hard drive.

Here's `top` when the cache had just been cleared.


28004 named 16 0 121m 11m 3796 S 12.3 1.3 0:00.96 apache2
28003 named 15 0 121m 11m 3740 S 12.0 1.3 0:01.00 apache2
5316 tarball 15 0 43032 29m 2320 S 11.3 3.1 326:08.68 ircd
27998 named 16 0 121m 11m 3808 S 11.3 1.3 0:00.51 apache2
27989 named 15 0 121m 11m 3800 S 10.3 1.3 0:01.14 apache2
28007 named 16 0 121m 11m 3776 R 8.0 1.2 0:00.24 apache2
28008 named 15 0 121m 11m 3776 S 7.0 1.2 0:00.22 apache2
27979 named 16 0 121m 11m 3752 R 6.0 1.3 0:02.06 apache2
27983 named 16 0 121m 11m 3748 R 6.0 1.3 0:01.94 apache2
27985 named 15 0 121m 11m 3748 S 6.0 1.3 0:01.05 apache2
27992 named 16 0 121m 11m 3792 S 5.0 1.3 0:00.33 apache2
27980 named 15 0 121m 11m 3796 R 2.3 1.3 0:03.24 apache2
28009 named 15 0 121m 11m 3796 S 1.7 1.3 0:00.82 apache2
27715 root 15 0 5192 1164 844 R 0.3 0.1 0:00.94 top
27960 named 15 0 121m 11m 3808 S 0.3 1.3 0:01.42 apache2
27984 named 15 0 121m 11m 3804 S 0.3 1.3 0:01.94 apache2
27987 named 15 0 121m 11m 3796 S 0.3 1.3 0:01.04 apache2
28006 named 15 0 121m 10m 3292 S 0.3 1.2 0:00.50 apache2

Idle CPU usage usually goes anywhere from 30%-0%. Is there any way to limit apache from using more than 75% cpu, or any other ways to drop cpu usage?

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Oct 23, 2007

i have one centos dedicated server and cpanel i will going to apache status is very request link and 2 site are very high in the list and my apache worked very hard and going to down any hours of your seems i must how control it?

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Jun 9, 2007

I am in a bind with Apache's multi process limit. Let me explain what I am doing. There's this website which has career details of all the football players since the beginning of professional football. They have a simple web form which allows you to look at a player's profile by entering his name or his 7 digit numeric id number (on that website).

One of my client wants a list of all the players with a certain "flag" in their profile. So I created an automatic form submission and HTML parsing script to get details of all the players with that "flag" in their profile. Let me not go into too much details and tell you that after applying a few pattern rules to the id number, the number of possible id numbers comes to about 1 million (instead of 10^7; each field can have {0,1,2,3,4,5,6,7,8,9}=10 digits, so net combinations = 10*10*10*10*10*10*10).

Therefore, to completely automate this process I wrote a script which would generate an id number, submit the form with that id number, and parse the resulting HTML profile for the "flag". If the script finds a hit on the flag, it stores all the fields of that player in a database. This script is working absolutely fine but the speed I was getting was about one check per second which means that I would have to leave the script running for about 11 days (to process all of about 1 million checks).

So i came up with this idea to divide the check into ten parts and i created separate scripts for each part. Now basically the first script checks for the first 100 thousand combinations, the second checks for another 100 thousand combinations, and so on.

The problem is that I am able to get only two of these scripts running at the same time. So it would still take me at least 5 days to get all the results. The rest of the scripts just sit there in the server's backlog. This is definitely due to Apache's limitation to handle multiple processes. The server I am using to run this script as well the target webserver both run on Apache2. I am sure it's not a problem with the receiving server. It has to be my Apache web server which is running the scripts. I have tried using mpm_winnt (on a windows server) as well as the prefork and worker modules (on a linux server) without any luck. Has any of you ever faced the same situation?

For those concerned about the legitimacy of this work, rest assured, this is absolutely legit. There's nothing in the website's use policy which restricts somebody from doing this. Moreover, my client hired me to do this only because the website owners were not able to hand over the data he required. They gave the stupid reason that they are helpless in providing the data because they don't have a system in place which would allow them to do a search restriction!

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I implemented a Reverse Proxy using apache2 v. 2.4... What i need to do is limit number of sessions against a Virtual Host. Is that possible?

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