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.
View 1 RepliesYesterday I installed tomcat on a RHEL 4 + cPanel and httpd 2.0.63 server using easyapache3, process was ok, jsp pages are loading fine using http://site.com/example.jsp , but servlets, are not working using http://site.com/example, how ever, if I load http://site.com:8080/example it loads the servlet perfect.
I read something about redirecting all traffict from port 80 to 8080, but you know.. this is a shared server, and that would affect all customers on the server.
So, mod_jk seems to be the only solution, now I read many documents over the web, but no one seems to be working to configure apache2 and mod_jk that is installed using easyapache3 script.
In my httpd.conf file, i have this:
LoadModule jk_module modules/mod_jk.so
Include "/usr/local/apache/conf/jk.conf"
At jk.conf i have this content: ...
I have a dedicated box with softlayer and I have noticed at varying times the past few months that with sites we host, sometimes the connection times out (I'll try to access like 5 or 6 sites within 30 seconds or so and they all drop, then a minute later they load fine).
I opened a support ticket and they said it usually has to do with the # of requests Apache can handle, and that this can be modified. They stated they could: "tweak the apache configuration file in this server that can make it possible to handle more requests."
So my question is what should the # of requests be set to? (I'm not sure what it is now, but I assume whatever the default # is).
I have been experiencing a lot of Keepalive requests for a particular image on a particular domain. please see the lines below.
0-11233931/63/63K 0.15100.40.030.03 195.68.185.13mydomain.comGET http://mydomain.com//images/logo.jpg HTTP/1.1
1-11233941/77/77K 0.18100.40.050.05 122.164.58.63mydomain.comGET http://mydomain.com//images/logo.jpg HTTP/1.1
2-11233951/42/42K 0.76000.40.170.17 89.139.214.74mydomain.comGET http://mydomain.com//images/logo.jpg HTTP/1.1
3-11233971/57/57K 0.04000.40.020.02 82.199.98.229mydomain.comGET http://mydomain.com//images/logo.jpg HTTP/1.1
4-11233981/46/46K 0.27000.40.040.04 217.150.55.41mydomain.comGET http://mydomain.com//images/logo.jpg HTTP/1.1
These are just a few lines from the top.
How can i prevent this from happening.. it seems as a SYN Flood, or maybe a DDoS.
We have an Apache acting as a reverse-proxy and listening on the Internet ("Our URL" on port 443).
We would have two ways of accessing this reverse-proxy:
-From a mobile app (authentication would be based on a corporate certificate)
-From any browser (authentication would be a login form)
The question is: can Apache forward requests to either server 1 or server 2, depending on whether a certificate is sent by the client?
I have Apache 2.4.2, OpenSSL/1.0.1c, on Windows Web Server 2008 R2 (64 bits)
After 12 hours of heavier load, the SSL requests stopped working/being answered. However if you requested the same page via http instead of https, it worked fine. Restarting the Apache server fixes this, for a while. Again after a few hours of traffic, the https requests stopped working again. I checked the logs, and nothing notable, the mod_ssl entries just...
The site is called only by client developed with Delphi 2007 (CodeGear user-agent). Delphi client use THTTPRIO for sending HTTPS request to SOAP.
So I just upgraded Apache 2.2.22 to Apache 2.4.3 and made sure to go through all the options that had changed and update the conf file accordingly. This included adding the cache module for SSL and changing the SSLMutex option over to Mutex default ssl-cache. We also turned off SSLCompression due to the CRIME attack vulnerability.
We use apache strictly as a loadbalancer to 2 tomcat servers via mod_jk. Apache serves no static content at this time.
After being deployed, everything worked fine until later in the day. After 3 hours of heavier load (our site only takes significant traffic during business hours), the SSL requests stopped working/being answered. However if you requested the same page via http instead of https, it worked fine.
Restarting the Apache server fixes this, for a while. Again after a few hours of traffic, the https requests stopped working again. This time I turned the loglevel up to debug and restarted the Apache server.
As traffic slowed down it took another 6 or 7 hours before SSL requests stopped working again. I checked the logs, and nothing notable, the mod_ssl entries just... stopped. (I don't know for sure its ammount of traffic related, it just seems that way)
I have tried reproducing this in a lab, but have not been able to get it to happen on the lab server.
OS: Windows Server 2008 R2
Apache: 2.4.3 vc9 build with OpenSSL 0.9.8 downloaded from apachelounge.org
Mod_JK Version 1.2.37 vc9 also downloaded from apachelounge.
I've spent the last several months working on a huge upgrade of a couple dozen websites. The upgrades include modifying Apache so that visitors who arrive at links pointing to mysite/World/New_York are redirected to mysite/world/new-york. In other words, all my links now default to lower case, and underscores are replaced with dashes.
Unfortunately, publishing it has been an endless series of disasters. My websites are now all crashed, and the server is unbelievably slow. It takes pages forever to load (if they load at all), and I can scarcely publish files online.So the following notice sent to me by my webhost got my attention.
IT appears your own server IP is making GET requests to Apache, causing excessive loading and causing service failures. On today's date, your IP made almost 6,000 connections to Apache:<br><br>
[root@host ~]# grep 64.91.229.106 /usr/local/apache/domlogs/mysite.org | wc -l 5924 [root@host ~]#<br><br>
These were all the same request:<br><br>
64.91.229.106 - - [12/Apr/2014:08:10:10 -0400] "GET /404.php HTTP/1.0" 200 14294 "-" "-"<br><br>
And that made up the total of requests:<br><br>
[root@host ~]# grep 64.91.229.106 /usr/local/apache/domlogs/mysite.org | grep "GET /404.php HTTP/1.0" | wc -l 5924 [root@host ~]#<br><br>
I have a little problem (on my Raspberry) with the maximum concurrent connections.When I open multiple tabs of a webpage which keeps persistent connections, apache is unable to serve more requests.Here is the (shortened) mod_info output (which also takes some time till there is a process kind enough to serve the request):
Code:
Server Version: Apache/2.4.10 (Raspbian) OpenSSL/1.0.1k
Server MPM: prefork
5 requests currently being processed, 9 idle workers
.___W____WWW_..W_...............................................
................................................................
......................
Srv PID Acc M CPU SS Req Conn Child Slot Client VHost Request
[Code] ....
When I understood it correctly, apache should spawn new processes (up to MaxRequestWorkers=150)
But there are idle???? processes, so it wont add new ones?
I dont think it has to do with mod_proxy (used for the webpage) since the mod_info output is affected as well...
I have installed red5 war version at my tomcat webapps directory
which I have installed using easyapache 3, demos/porttester works great but I am unable to login to admin panel at [url] I get tyhe server address as well as username password panel but none of the passwords I try gets accepted, also in this type of installation I was unable to find register.html to create a login,
A weird thing happents once on few days on my server, and it's not a regular thing or on exact time.
When I have this problem no page can be loaded in the browser, but WHM is working, i think because it's accessed by IP .
In apache status page I can see lots of ..reading.. requests which are there even for 10 - 20 seconds sometimes.
Usualy the server has 10 - 20 requests/s :
CPU Usage: u35146 s2297.05 cu2.74 cs4.5 - 6.97% CPU load
11.2 requests/sec - 83.0 kB/second - 7.4 kB/request
10 requests currently being processed, 8 idle servers
But when the ..reading.. requests appear it goes much higher like 100 to 200
11.5 requests/sec - 85.3 kB/second - 7.5 kB/request
200 requests currently being processed, 0 idle servers
after 3 minutes :
160 requests currently being processed, 30 idle servers
When I logged on to SSH I saw that there are ~150 conection from a single IP .
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?
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] .....
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
Httpd.conf
I currently have a web VPS hosted with FDCServers.net and after 5 days of switching to it i am getting massive HTTP requests. When i login to WHM and hit apache status i have many requests per second by multiple IP's that are going to pages that simple don't exist. Currently my hostname for the server is set at web-01.optical-hosting.com which is what the requests are being sent to. I am also having a DNS issue because when i put http://web-01.optical-hosting.com in the web browser it displays the first account's site under "list accounts" in cpanel. Can someone please help me fix both of these issue's? i will post an apache log in a second post as it is long. Also, these are from overseas. please someone help me with this i have Aim and Msn.
View 4 Replies View RelatedI'm looking to pass the entries to a web form, via Apache, to an external process (listening on a port say 4321) running on the same host as Apache.Is there a way to "coerce" Apache into doing this?
View 1 Replies View RelatedI have a new website that has a similar feature to tripadvisor's Reviews, where users share detailed thoughts and experiences. They fill in all this information on one form so there is no interaction with the system while they are writing.
I know Apache has the TimOut setting which is set to 5 minutes by default. This ensures that you do not have users using active memory and sessions for a long period of time.
But the problem I have seen is that some users are spending 15-20 minutes writing very detailed experiences and when they hit the submit button obviously their session has timed out and they lose everything and get a system error.
I really don't want to change the TimeOut value in Apache to 20 min due to resource constraints, but is this my only option?
I have a web server with Apache 2.4 VC11 [URL] .... running on Win 7.
On my server I have some mp3's. I can queue them up in Winamp and the 1st one will begin streaming. However, after it plays for about 20-30 minutes it stops streaming, almost as if some time limit has been reached, and advances to the next song. I can reselect the song and drag the position to where it stopped playing and it will continue to play for about 20-30 minutes from that position and stop again.
Is there a setting in the apache configuration I need to add/change to increase this limit?
I am unable to get A username and password requested by http://127.0.0.1:8080. "Tomcat Manager Application"..I created userid and password in tomcat-users.x.
View 4 Replies View RelatedFirst 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.
My Linux Server's Http Daemon (Apache) would stop serving websites ever so often, as soon as apache is restarted the error fixes iteself only to resurface within few hours.
The apache process would still be running i.e. apache does not die but no websites hosted on my server would be accessible from browser. And when this happens the apache logs do not log any http requests.
Instead when this happens all http requests to my server would be redirected to some weird Trojan website and my Norton Antivirus would show an Alert/Warning, for example;
"Browser exploit at www.xxx.xxx was blocked"
Risk Name: MSIE WebViewFolderIcon ActiveX Control BO
or another error like;
"Auto-Protect has detected Trojan.Fakeavalert".
At first i thought the problem could be with my Laptop/ISP so i logged on to the server via SSH and opened try to open a website using command line "lynx mywebsite.com" and it shows following error;
"Alert!: HTTP/1.0 503 Service Unavailable".
Now if i assume my laptop were to be infected, then as soon as i restart my apache and visit mywebsite.com eveything returns to normal with no such warnings. Why do i see those norton error messages only when apache is down with 503, and when apache is down with 503 how come the http requests always get redirected to some suspicious websites and nothing gets logged in apache error log?
I think my server is being attacked causing http to get unresponsive and thereafter http requests to my server are redirected to some malicious website, is this correct?
Also, i suspect this is a php script exploit as some customers have reported that google have blocked their website due to security reasons, i found <iframe> tage inserted in some php pages which i fixed.
Also, another thinh i noticed;
when apache responds with the 503 it is referencing PHP 5.1.4 in the header response:
[root@]# curl -I xxx.xxx.xxx.xxx (my server ip)
HTTP/1.0 503 Service Unavailable
Server: Apache
X-Powered-By: PHP/5.1.4
Retry-After: 20
I am running PHP 4.3.9m why does apache responds with PHP 5.1.4 when this 503 error surfaces?
Also, since my apache was dowan with 503 error a customer mailed in today saying;
"It seems that my site www.xxxx.com is regularly down, and the winlogon virus is involved."
I suspect this is again due to the fact that http requests start getting redirected?
So I've got a problem where a small percentage of incoming requests are resulting in "400 bad request" errors and I could really use some input. At first I thought they were just caused by malicious spiders, scrapers, etc. but they seem to be legitimate requests.
I'm running Apache 2.2.15 and mod_perl2.
The first thing I did was turn on mod_logio and interestingly enough, for every request where this happens the request headers are between 8000-9000 bytes, whereas with most requests it's under 1000. Hmm.
There are a lot of cookies being set, and it's happening across all browsers and operating systems, so I assumed it had to be related to bad or "corrupted" cookies somehow - but it's not.
I added "%{Cookie}i" to my LogFormat directive hoping that would provide some clues, but as it turns out half the time the 400 error is returned the client doesn't even have a cookie. Darn.
Next I fired up mod_log_forensic hoping to be able to see ALL the request headers, but as luck would have it nothing is logged when it happens. I guess Apache is returning the 400 error before the forensic module gets to do its logging?
By the way, when this happens I see this in the error log:
request failed: error reading the headers
To me this says Apache doesn't like something about the raw incoming request, rather than a problem with our rewriting, etc. Or am I misunderstanding the error?
I'm at a loss where to go from here. Is there some other way that I can easily see all the request headers? I feel like that's the only thing that will possibly provide a clue as to what's going on.
I have been trying to solve a big problem for the last 2 weeks with one of our servers.
The client using our system (web based w/ apache and php) is a contact center firm. They have about 120 operators, all connect to our websever with the same IP.
We have been suffering DoS attacks from some of these operators. This are simple, browser attacks , namely 5 or 10 operators will just hold F5 key and bombard the server with requests when they shouldnt.
We did manage to produce a php protection which will recognize the multiple requests and blacklist the user, but its "too late" because the request have already been sent and processed by the webserver.
We use the user ID in the system to control who should be blacklisted, so this is all dependent on our own authentication.
Ideally, we need something EXACTLY like mod_evasive, but for rejecting single requests instead of blocking the IP. Exemplifying : if a user calls the same url, 5 times, in a 3 second spawn, we will reject every next request for 30 seconds, but only the requests by that user.
If the webserver can make any use of it, the user id is stored in a cookie.
I'm running Apache 2.4.4 on Windows Server 2008 R2. It's already happened many times that Apache stopped responding to requests. The last entry in the error.log:
[Wed Mar 27 06:22:07.043600 2013] [mpm_winnt:notice] [pid 1736:tid 256] AH00354: Child: Starting 64 worker threads.
[Wed Mar 27 06:52:34.521200 2013] [mpm_winnt:error] [pid 1736:tid 1656] AH00326: Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting
I want to set the Timeout value bigger for a specific folder.
View 5 Replies View RelatedWe want to implementing the load balancing for our domain, if the traffic is heavy and 8080 (i.e. currently integrated with apache) doesn''t serve more that time the apache will call 8081 and serve to the request without any problem.
We want to access our site www.domain.com (i.e. run on port 80). Please guide us it is possible or not?
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] ....
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
packetSize="65536"
editing a workers.propeties file, but we dont have any files on the server with that name.
I'm trying to prevent unnecessary GET requests from being processed by my CMS that originate from mutating IP address locations. This is sucking up server resources when the request is processed by the app, and so if possible, I'd like to block them with HTACCESS so that the request is stopped before anything is intensively-processed.
What happens is that an IP address will make a GET request for, say, "blah/test" or "blah/test2" but nothing else (no site assets like images or CSS/JavaScript files or even other pages). After this request, another IP address will then make an equivalent kind of request, and so on, and so on... All of them have similar if not identical user agent strings but they're always worthless requests that do nothing but waste CPU and RAM. I'm assuming it's just some idiotic SPAM bot because of this.
We have a screen where users are filling out a form on our website, but if they don't click "submit" before the session-timeout limit, they are logged out and lose their work when they click the button.
So for instance with a timeout of 10 minutes, if it takes 15 minutes to construct their message, the connection will silently time out in the background with no warning.
Is there a way to make Apache respect a keypress/keydown/keyup as "activity", and maintain the session while the user is still typing?
Our server reports that it is using Apache Tomcat/7.0.39