Too Many DNS (Domain Name Server) Requests. How To Make It Lower ?
May 8, 2007
I host my DNS with DNSmadeeasy.com , I noticed that I have daily more than 350.000 DNS requests for main domain, This domains got about 80.000 uniqes/day, so this is strange how can there be 350.000 DNS requests/day. Seems that I'll go over the quota because of this.
The TTL for all domains is set to 86400.
Is there a way to discover how its possible ? And also is there a way to do something to make this number lower (DNS requests)
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Jun 17, 2014
I have a domain which has a website built in Web Presence Builder. That allows people to go to http://domain.com. When they do that, for Google analytics purposes (I do not want Google Analytics to show 2 pages of http://domain.com and http://www.domain.com), I want to ensure that any request puts www. in it automatically.
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Jan 19, 2008
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.
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Feb 14, 2009
I'm hosting some domains on a whm setup. One of the domains has outgrown the shared hosting setup, so I'm moving it to it's own vps. I want to limit the downtime, and I understand I should lower the TTL on the domain.
The registrar is Network Solutions and the nameservers are pointing to the shared host (which is on a whm/cpanel setup). How can I lower the ttl on this domain? Do I have to move the domain to a more advanced DNS service to achieve this, or is this something I can do within whm?
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Mar 10, 2008
I have example.com as a reseller account hosted on a shared server. I have ns1.example.com and ns2.example.com on that server and client domains use these nameservers.
I want to move to a VPS for more control and so I have acquired vps.example.com. This also has vps_ns1.example.com and vps_ns2.example.com with it.
Can I move everything to the VPS? Assuming that I move the files over, if I simply changed the DNS of example.com to point to nameservers vps_ns1(and 2).example.com, what would happen?
Have I made it over complicated for me to understand, and it's actually a lot easier than I think? Or have I shot myself in the foot by using vps.example.com as the name for the VPS?
I am using cPanel/WHM for both servers.
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Jan 31, 2008
I was checking my server information today on WHM panel and this is what I saw:
Processor #1 Vendor: GenuineIntel
Processor #1 Name: Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
Processor #1 speed: 1596.000 MHz
Processor #1 cache size: 4096 KB
Processor #2 Vendor: GenuineIntel
Processor #2 Name: Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
Processor #2 speed: 2660.000 MHz
Processor #2 cache size: 4096 KB
Why is the Processor #1 speed labeled as 1.6 ghz? Processor #2 speed never goes down no matter how high the load is. Could it be the reason that my server can't handle 4 websites with a cumulative total of 20k unique hits per day?
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Mar 14, 2008
I have domain1.com as the main domain that I am using with cpanel and domain2.com as an addon domain that points to a different directory.
I want to move domain1.com to another server and I would like to know if I can make domain2.com the main one
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Feb 13, 2008
When i check the server status is shows a high server load.
How do I lower the server load? it looks like for mysql activity.
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Oct 11, 2012
Does the apache virtualhost environment lower the web or apache server's security? virtualhost has no security issues.
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Aug 11, 2007
I added new sub domain name using cpanel on my vps server.
Now I need to create this sub domain on my localhost, so i can test everything before I upload them.
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Jul 25, 2008
my server is still effed up from the MPack attack that I received.
I just received the following email, does anyone know what this means or how it could be done? The client IP is mine, so some how my server is sending that request?
72.233.79.2 (malwarebytes.org) Server Log:
[Thu Jul 24 13:05:07 2008] [error] [client 72.55.184.144] mod_security:
Access denied with code 403. Pattern match ".../" at THE_REQUEST
[id "300006"] [rev "1"] [msg "Bogus Path denied"] [severity "CRITICAL"]
[hostname "www.malwarebytes.org"] [uri
"/errors.php?error=[url][unique_id "tNAGeH8AAAEAAEsfD7wAAAAO"]
[Thu Jul 24 13:05:07 2008] [error] [client 72.55.184.144] mod_security:
Access denied with code 403. Pattern match ".../" at THE_REQUEST
[id "300006"] [rev "1"] [msg "Bogus Path denied"] [severity "CRITICAL"]
[hostname "www.malwarebytes.org"] [uri
"/forums/errors.php?error=[url][unique_id
"tNAPAn8AAAEAAD7mqWQAAAAl"]
[url]is the RKHunter scan log
[url]is the ChkRootKit scan log.
I'm going through this thread right now:
[url]("How-to detect a possible intruder?") and I've come across a handful of hidden directories:
/home/mifbody/public_html/vbulletin/arcade/images/. /. /xh
/home/mifbody/public_html/vbulletin/arcade/images/. /. /xhide.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/convertxdccfile.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_admin.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_dccchat.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_display.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_main.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_md5.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_misc.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_statefile.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_transfer.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_upload.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_utilities.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/convertxdccfile.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_admin.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_config.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_dccchat.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_defines.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_display.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_globals.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_headers.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_main.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_md5.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_md5.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_misc.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_statefile.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_transfer.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_upload.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_utilities.c
I was able to successfully delete all the files, but how do I now get rid of the directories themselves? When I do:
rm -fr "/arcade/images/. /"
and then locate ". "
I still get:
/home/mifbody/public_html/vbulletin/adserver/banners/.
/home/mifbody/public_html/vbulletin/alice/src/admin/.
/home/mifbody/public_html/vbulletin/arcade/images/.
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Oct 8, 2007
There seems to be some problem with my server, none of the websites hosted on my server are accessible, the http requests either return a blank page or a page with a red quare on the upper left hand corner.
I am not sure if this is some kind of infection or DNS problem or a problem with memory apache is taking up
as i have thousands of virtualhost entries in my access log accumulated over the years out of which only a few 100 websites i am serving presently, but never deleted the non-exitent virtualhost blocks.
At times the websites are opening but most of the times they are not. And when they do not open my http requets are not logged in apacha access log.
Even the customers have reported the same problem.
Also, just four days back i had a strange issue where all
http requests to my server would take me to [url].
I can SSH to server, and everything else is working fine.
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Apr 12, 2014
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>
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Apr 20, 2008
Where is a server's IP address for outgoing requests set? e.g. if a script on the server fetches ip-address.com, the IP that is identified there. A server may have multiple IPs pointing to it, but there's only one that outgoing requests are funneled through. I've tried changing "Main Shared IP" in WHM, but that doesn't seem to affect this.
Is this set server-side, in some setting file - or is this a datacenter thing?
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Jul 24, 2009
When i try to open any website hosted on my server (around 50 of them) i am being taken to following malware website;
[url]
[url]
This is a problem with my Limnux server running Apache and not a virus on my local computer as customers from all over are reporting the same issue.
As soon as i restart Apache eveything returns to normal with no such redirects.
I think my server is being attacked causing http requests to get redirected to some malicious website.
This issue would resurface almost every hour and would not go away till i restart apache.
So far my Datacenter techs. have not been able to identify the cause of this.
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Dec 3, 2007
An user is reporting this error receiving emails:
451 - The server has reached its limit for processing requests from your host
I've searched for this error message but haven't found much info
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Jun 4, 2009
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?
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Mar 27, 2013
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
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Jan 31, 2008
Yesterday 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: ...
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Feb 23, 2008
I don't mind have nfs running, but how do I keep it running at the lowest as possible... seems like it's hogging up all my usage/cpu's...
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Aug 14, 2008
I'm having a problem with high MySQL CPU usage on my server, one of my sites is getting hit pretty hard right now and MySQL is just killing the box. Its averaging a load of over 20, CPU usage is around 130%.
here is my my.cnf file. is there anything in their that should be changed to help lower the CPU usage?
# The MySQL server
[mysqld]
port= 3306
socket= /var/lib/mysql/mysql.sock
skip-locking
key_buffer = 256M
max_allowed_packet = 1M
table_cache = 512
max_connections=500
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 2
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
Server Specs.
Pentium E 2.0Ghz
2GB ram
2x 320GB hard drives.
Cent OS 5
Cpanel
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Jun 18, 2007
On a Cpanel server, lightly loaded, but some fairly large sites (~3GB stored) loads get pretty high during CP backups (D/W/M to secondary drive, compression on). It looks like RAM is showing mostly used during this time (977,555 out of 1,026,348), and iowait is ~50, sometimes quite a bit higher at ~80 on the larger accounts. Not pegged at that amount, but fairly steady. This box only has 1GB RAM, so I'm thinking adding another Gig would alleviate this issue.
OS: CentOS 4.x
Hardware: Intel P4 3.6HT/1024MB/2x160GB
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Jun 27, 2009
I'm gathering info for getting a new dedicated server, planning on using my own colocated hardware, but still looking at what's available in dedicated servers at the same time.
There are lot's of dedicated servers being offered at prices lower than 1U colocated rackspace. How's that possible, what am I missing?
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Oct 4, 2008
I have a small issue that's probably easy to answer. If I upload a zip file to a Linux server, and run this command via SSH:
Code:
unzip -a name_of_zip.zip
Although it does unzip the directories as expected, it makes all file names and folders lowercase. This is a problem when trying to install software that relies on case sensitive names.
Does anyone know what command tells the server to retain the file names and not alter them?
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Apr 23, 2008
i want to make one web site i want to show there some movies same like youtube but my video will on media player .i want to make own server for hosting and i need more than 1tb storage .i don,t know which thing i need for own server .i just found there these kind of things Netgear ReadyNAS Duo RND2150 500GB i don,t know it will work for me or not
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Mar 9, 2008
to buy a good dedicated server to serve my clients here. So im looking from advices on a good hosting company USA based.
But i have been ping several major hosting USA company (like, mediatemple, theplanet, etc...) and i still didnīt get a Ping under 130ms.
If i ping a good EU company i get 60 to 90ms.
I know that the distance is bigger but,
Does anyone knows any good USA hosting company with a Ping to Europe lower than 100ms?
My budjet goes up to 800 $/moth
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Jan 20, 2008
the data center tell me we use a lot of bandwidth,
and i check from the mrtg they offer to check,it reach about 80M,
my server really used a lot of bandwidth,
but i login whm to check the bandwidth of accounts,
and it looks likely my customers did not use a lot of bandwidth,
i worry if my server is hacked to attack others or other things,
how can i check this?
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May 1, 2009
I've recently ordered two new servers with Windows OS, and am wondering how I go about making sure the hard drives I ordered are the ones actually installed, and the RAM i ordered is the ram actually installed.
I know the amount of ram and amount of diskspace is correct by Properties and My Computer but not sure how to figure out the others.
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Jun 14, 2008
i heard from a friend that i can make my computer a server, is this true? how can this happen & is it safe, cheap?
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Aug 10, 2007
What makes DNS run the smoothest computer wise. What cpu combo for a dedicated DNS server would work the best?
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