I have a Windows Server 2003 Enterprise (32 bits) running IIS 6.0, with ASP.Net 1.1.4322. Basically it's an application and image server, that has a large amount of concurrent accesses.
Around 800 users simultaneous access simulteneously and ASP.NET app, that will request some date from an MS-SQL Server database and point the browser to image file (all at once), every few seconds (it's a live webcast applications). The server is quite robust, with 500 GB in a RAID-5, 4 GB RAM, Dual Opteron Processor.
When the users access it, the machine memory and CPU usage a low. Also it has plenty of bandwidth, since it's directly tied to a Gigabit port on the datacenter. I kept an eye on all paramenters and there is no imporant bottleneck on the hardware side.
Here is my problem: after some "images" are sent, with 800 users, the users start getting a 503 error, and can no longer access the images.
On IIS HTTPErr Logs, I found these errors to be "Timer_ConnectionIdle". I believe it has something to do with the way the Application Pool is handling all those concurrent connections. No references to it are made on Windows Logs.
I've already tried tweaking all those paramenters on the Application Pool, but no results. For example, I tried increasing the Request Queue Limit value, but that doesn't seem to make any difference.
Also, I inserted "MaxUserPort=65534" on TCP configurations on regedit. Rebooted. Also, tried turning off keep-alive and decreasing connection timeout, then a restart of the w3svc (see [url]for the explanation about this). Tried changing each parameter individually and tested. No big difference after each modification.
Has anyone ever seen this? Is there a way to get this solved? Again, this address [url] has a description of what seems to be my problem... but I didn't manage to get this solved.
For past one week, my wordpress based blog is just dead, becasue of heavy trackback/pingback spamming(500 a minute). I've tried various plugins, but to no avail.
In addition to stop spammers before generating PHP load, I've tried all possible HTACCESS rules, but to no avail. I truly sure, I've done something wrong.
May I request the experts here to advice on how to stop this ongoing spamming?
My website (Large Discussion Forums Site) is under a heavy DDoS attack since 3 weeks. My first host could not handle such an attack so I moved to another who claimed to have a firewall that can handle the attack, but still, the site is down.
Anyone has a good suggestion to get the site up and handle the attack? Any particular hosts that can help me?
(The Forum has its own server and does not use Apache).
I have recently acquired a nice box (2x Dual Core Opteron 275 2.2 GHz, 16 GB RAM, 16x500 GB SATA @ RAID5/6) but I'm unsure if it isn't smarter to buy smaller machines (like X2 5600+, 4 GB RAM, 2x400 GB HDD) and put like 15-20 customers on it.
Yes, I know that the hard drives are more than oversized for VPS hosting
The Opteron server will have a very, very nice I/O performance so that customers are going to have a good feeling while working on it. To refinance the costs it would of course be neccessary to put not less than 125 VPS on one box, so I can imagine that there'll be a bottle neck somewhere (CPU power I'd guess?).
What is your opinion? Big boxes with high performance and loads of customers, or small boxes with not-so-many VPS?
I run a filehosting site actually and there are alot of people downloading at the same time which i think the server goes down and then httpd restarts itself and all the people downloading the files, their files get currupted.
One of my Cpanel servers is showing heavy data transfer this month. In 6 days, it crossed 600 GB data transfer which is equal to what it did last month. Also, all the websites collectively have only consumed around 60 GB data transfer in 6 days. How do I find out what exactly is causing heavy data transfer?
Are there any hosting companies that use an Enterprise strength SPAM solution such as IronPort?
We have 3-4 business websites and spam, especially within the last 6 months, has become a tremendous problem. At least 100 spam emails a day are being delivered.
Spam filters do not solve the problem - they simply put some percentage of spam in a folder, often genuine emails, and we still have to go through it manually.
Do not mind paying a premium for the hosting. Any hosts that offer HEAVY DUTY spam protection?
I have a problem with one of our websites. For some reason, only that one website won't load and shows an error page. This domain is not propogating, nor has it had any changes to any DNS records lately, and it was working around five minutes ago.
I have 2 identical Fedora8 boxes with Apache 2.2.8, MySQL 5.0.45 and PhP 5.2.4. I use one as the Web+DB server (say box A), and the other (box B) just as the Web server connecting to the DB server on box A. I use this 2 machine configuration to test a LAMP based-Web application. I have a client program on other machines that can emulate a massive web workload to these 2 servers; it can emulate hundreds to thousands of users using the application simultaneously.
Before running the test, the connection to the DB server from both boxes seem fine. Using the mysql client program on either box A or B trying to connect to the DB, the connection goes through instantly. In the /etc/my.cnf file, I have max_connections=4096 and max_user_connections=4096. Note that the web app uses one single db user to connect to the db. To allow remote connection, I inserted one record into the user table of the mysql db whose the host field's value is '%' (allow connection from all remote hosts).
After running the test (which I found out that many requests sent to box B failed), mysql client program on box A is still able to connect to the db instantly; but the one on box B has a problem: it takes extremely long (5 - 10 minutes or even more) to establish the connection, it doesn't time out, just takes that long. I believe that's the cause for the failure of requests to box B.
We are facing a very problematic situation since last several months due to accessive bandwith usage. But we are sure this is only local traffic.
We have 2 Servers with our hosting provider Server A - this is a VPS all our webfiles/domains/dns/nameservers reside on this server
Server B - this is a dedicated server contains only databases
(we are actively running vbulletin based forums on this servers)
Since last several months we are facing huge bandwith increase since we have transferred only our databases to Server B. (earlier database + everything was on Server A) We never ever consumed even 50% of the entire allocated bandwith in past when we were on Server A.
But only after moving the database from Server A to Server B we have found this tremendous increase,
Can we do something about same ? as both the servers belong to same hosting provider. We are not sure but expect that this is only local network traffic between 2 servers.
We are facing a very problematic situation since last several months due to accessive bandwith usage. But we are sure this is only local traffic.
We have 2 Servers with our hosting provider Server A - this is a VPS all our webfiles/domains/dns/nameservers reside on this server
Server B - this is a dedicated server contains only databases
(we are actively running vbulletin based forums on this servers)
Since last several months we are facing huge bandwith increase since we have transferred only our databases to Server B. (earlier database + everything was on Server A) We never ever consumed even 50% of the entire allocated bandwith in past when we were on Server A.
But only after moving the database from Server A to Server B we have found this tremendous increase,
Can we do something about same ? as both the servers belong to same hosting provider. We are not sure but expect that this is only local network traffic between 2 servers.
I am getting this error for one of my website. This site is working fine on the old server from which it has been migrated:
============================================================= Server Error in '/' Application. --------------------------------------------------------------------------------
Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. (c:Inetpubvhosts<domain.com>httpdocsweb.config line 59) Source Error: Line 57: <add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/></httpHandlers> Line 58: <httpModules> Line 59: <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> Line 60: </httpModules> Line 61: </system.web> Source File: c:Inetpubvhosts<domain.com>httpdocsweb.config Line: 59 --------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053 =============================================================
I am attaching the web.config file as attachment. Can anyone tell me how do I fix this.
I have a one problem in my server . I use in Parallels Plesk v12.0.18_build1200140606.15 os_CentOS 6 I vps in systemOS CentOS6.6 Final Minimal and installing plesk health monitor show error in :
{"status":"error","statusMessages":[{"status":"error","class":"","content":"Unable to load configuration file.
I've been having trouble with my VPS for a while now. In the QoS alerts page in Virtuozzo it seems to be a problem with numtcpsock and tcprcvbuf, mainly numtcpsock.
Copy these into the browser: i18.photobucket.com/albums/b106/gnatfish/qosnumtcpsock2.jpg
Anyone know of some good server load testers ( commercial )?
Im not looking for application based load testing, I need real web server load testing... need to see how much traffic this one site can take before it cries.
I'm having the oddest issue. For some reason, some of the websites on my server load fine, and some take a really long time to load (2 minutes).
Now, the server load is fine, and the size of the sites aren't the issue either. I've restarted Apache and a couple more services, and still the same sites seem to load very slow.
What could be causing this since it's only effecting certain websites?
I would like to know how to check load via ssh and check files causing load?
I want the ssh codes for 2 different set of control panels, one with cpanel+whm and other with kloxo+hypervm
and I would also know how to check the files causing the load, such as some files could have been interrupted while processing, so they could be causing load some times, so I want to stop such processes if any are running on the vps on my friends accounts
As the title says, 1 of the accounts on my server is getting the following error message - error number 0x800CCC79 server response 451 temporary local problem -
Yet other accounts on the server are sending and recieving fine?
what would cause this error? Its not tempory as its been 48 hours
yum -y groupinstall kde Loading "priorities" plugin Setting up Group Process Setting up repositories Cannot find a valid baseurl for repo: update Error: Cannot find a valid baseurl for repo: update
what is this? what ever i try to install i get this weird error..
Unable to parse zone: Error while parsing zonedata for xyz.com: syntax error, line 25 ...propagated at /usr/local/cpanel/Cpanel/CPAN/Net/DNS/ZoneFile/Fast.pm line 142.
--> Populating transaction set with selected packages. Please wait. ---> Package cadaver.i386 0:0.22.5-1.el5.rf set to be updated ---> Package mtr.i386 2:0.72-1.el5.rf set to be updated ---> Package rsync.i386 0:3.0.2-1.el5.rf set to be updated ---> Package nmap.i386 2:4.20-1.el5.rf set to be updated ---> Package lftp.i386 0:3.7.1-1.el5.rf set to be updated ---> Package syslinux.i386 0:3.63-1.el5.rf set to be updated ---> Package dkms.noarch 0:2.0.19-2.el5.rf set to be updated ---> Package subversion.i386 0:1.4.6-0.1.el5.rf set to be updated --> Running transaction check --> Processing Dependency: perl(Crypt:asswdMD5) for package: syslinux --> Finished Dependency Resolution Error: Missing Dependency: perl(Crypt:asswdMD5) is needed by package syslinux
Other Details: eth0: error fetching interface information: Device not found cp: cannot stat `/etc/apf.bk.last/vnet/*.rules': No such file or directory Imported options from 9.7-1 to 9.7-1. Note: Please review /etc/apf/conf.apf for consistency, install default backed up to /etc/apf/conf.apf.orig my host has said Code: edit the apf.conf file to venet0:0 instead of eth0 which ive done and im still getting the error, Ive pasted my current conf.apf config below
Code: #!/bin/sh # # APF 9.7 [apf@r-fx.org] # Copyright (C) 1999-2007, R-fx Networks <proj@r-fx.org> # Copyright (C) 2007, Ryan MacDonald <ryan@r-fx.org> # This program may be freely redistributed under the terms of the GNU GPL # # NOTE: This file should be edited with word/line wrapping off, # if your using pico/nano please start it with the -w switch # (e.g: pico -w filename) # NOTE: All options in this file are integer values unless otherwise # indicated. This means value of 0 = disabled and 1 = enabled.
## # [Main] ## # !!! Do not leave set to (1) !!! # When set to enabled; 5 minute cronjob is set to stop the firewall. Set # this off (0) when firewall is determined to be operating as desired. DEVEL_MODE="1"
# The installation path of APF; this can be changed but it is not recommended. INSTALL_PATH="/etc/apf"
# Untrusted Network interface(s); all traffic on defined interface will be # subject to all firewall rules. This should be your internet exposed # interfaces. Only one interface is accepted for each value. IFACE_IN="venet0" IFACE_OUT="venet0"
# Trusted Network interface(s); all traffic on defined interface(s) will by-pass # ALL firewall rules, format is white space or comma separated list. IFACE_TRUSTED=""
# This option will allow for all status events to be displayed in real time on # the console as you use the firewall. Typically, APF used to operate silent # with all logging piped to $LOG_APF. The use of this option will not disable # the standard log file displayed by apf --status but rather compliment it. SET_VERBOSE="1"
# The fast load feature makes use of the iptables-save/restore facilities to do # a snapshot save of the current firewall rules on an APF stop then when APF is # instructed to start again it will restore the snapshot. This feature allows # APF to load hundreds of rules back into the firewall without the need to # regenerate every firewall entry. # Note: a) if system uptime is below 5 minutes, the snapshot is expired # b) if snapshot age exceeds 12 hours, the snapshot is expired # c) if conf or a .rule has changed since last load, snapshot is expired # d) if it is your first run of APF since install, snapshot is generated # - an expired snapshot means APF will do a full start rule-by-rule SET_FASTLOAD="0"
I upgraded my PHP to 5.2.4 ang changed server API from Apache to CGI, and now a site doesnt load anymore...
It gives this error message: Fatal error: Internal Optimizer error: can't translate opcode 60 (JMP_NO_CTOR), please contact Zend support in /home/vrock/public_html/rwf/rwengine.lib on line 0
PHP Version 5.2.4 Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies with Zend Extension Manager v1.2.0, Copyright (c) 2003-2007, by Zend Technologies with Zend Optimizer v3.3.0, Copyright (c) 1998-2007, by Zend Technologies
Usually everything has been working fine with this .htaccess-file until today. There hasn't been any change on the system.
If you click on the hyperlink to the restricted area the login window appears where you need to type in your username and a password. After typing in these data the following message appears in the browser:
500 Internal Server Error
The server encountered an internal error or misconfigruation and was unable to complete your request. (…)
The apache error log file contains the following message:
Request exceeded the limit of 10 sub request nesting levels due to probable configuration error.
Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
The increase of the LimitInternalRecursion does not solve the problem. So I switched the LogLevel in the httpd.conf file from warn to debug and looked again on the entries of the error log.
The following appeared (I have replaced ip addresses, usernames and URL by xyz or <URL>) :
Code:
[error] [client xyz] mod_digest_apple: Client is using a nonce not issued by this server for this context:/rb/Vorlesung/WS12/Downloads/, referer: http:<URL>
Command:MLSD Response:150 Accepted data connection Response:226-ASCII Response:226-Options: -a -l Response:226 24 matches total Error:Connection timed out Error:Failed to retrieve directory listing
