Apache Frequently Unresponsive And Strage Error Log Entry Looking For Mdqt.php
Apr 11, 2008
Many a times websites hosted on my Red Hat Linux server would not open even though Apache and everthing else is up and running. When i hit reload on browser 4-5 times the website would load or i have to restart Apache and everything starts working normally.
Today when this problem resurfaced i did not restart Apache and looked for in apache logs and saw this strange entry in apache Error Log;
[client my.ip.xx.xx] script '/my/website/httproot/mdqt.php' not found or unable to stat
The above was in apache Error Log, above is my ip address, and i never requested a file named mdqt.php, in fact no file by the name mdqt.php even exist on my entire server.
I then looked for mdqt.php in error logs and saw several requests made for this file and from various IP addresses.
i understand this is what causes my http to die.
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Dec 25, 2008
I have a VPS with 2GB RAM. The load is always around 0.5 - 0.7. It's Xen VPS, and I see the VPS doesn't use swap yet. However, Apache is going down frequently. Might be 3-4 times per day, and DA informs me about the downtime when trying to restart Apache.
In apache error_log, I haven't seen any special error. Just few lines like this
Quote:
[Thu Dec 25 21:53:03 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:03 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:03 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Thu Dec 25 21:53:04 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:04 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:04 2008] [notice] Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8b DAV/2 PHP/5.2.8 configured -- resuming normal operations
I wonder why Apache is going down frequently, and how to fix it?
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Jan 16, 2007
I have a cpanel server with 2GB of ram. For the last two weeks , we are experiencing problems with apache in the server. Apache goes down frequently in the server and we had to manually restart the service everytime. chkservd do nothing for a restart. I had
recompiled apache using easyapache script.
Strangely i can see some entries like the following in apache error logs
host: isc_socket_create: not enough free resources
I compiled it one more time but the errors still exist.
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Nov 20, 2013
I have Apache 2.2 installed on Windows to host a web2py application using wsgi.
Apache crashed once stating it had run out of worker threads, so I inscreased ThreadsPerChild to 500. It has since crashed/become unresponsive without giving anything in the error log.
I set up mod_status, and am looking for understanding what I see when looking at server-status page.
It says 135 requests currently being processed, 365 idle worker. However I don't think there are 135 people connected.
Here's the request lines:
SrvPIDAccMSSReqConnChildSlotClientVHostRequest
0-1253840/0/0W138495448300.00.000.00
... the line above is repeated identically 125 times
0-1253840/32/32W000.00.460.46127.0.0.1dalgety-svr8.havelock.intGET /server-status HTTP/1.1
0-1253840/0/0W52400.00.000.00192.168.202.109dalgety-svr8.havelock.intGET /HubForms/ProjectFolderIndexing/index HTTP/1.1
[Code] ....
Question:
1) What are those 125 requests, and why are they not exiting. Are they anything to worry about? why is there no Client/VHost/Request? Could they be from the python process? Could they be what's causing the issue?
2) The Acc entry 0/121/121 on /HubForms/capacity_requests/index - is this representative of an issue?
3) When I restart Apache, it typically says "Terminating 375 threads that failed to exit" but that number doesn't match up with anything. Are these the idle threads?
Also I'm not sure what "restart" actually means, i.e. what stops and what stays (i.e. why am I on generation 0-12?).
4) Is any of this anything to do with why Apache becomes unresponsive, or should I be looking elsewhere?
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May 7, 2013
when im trying to enable spam filter for a particular email account i get this mysql error:
Error: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'xxxx@domain.com' for key 3 (mail id i hid it for security reasons xxxx@domain.com)..
i searchd in the psa database but could not find any duplication...
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Oct 12, 2009
I recently purchased a Dedicated Server, and this is the first time I have ever used a Dedicated Server before, although I do have some experience with Linux. The problem I am having is that if you assign an Unused Dedicated IP to a domain using WHM the entire website that is assigned to that IP becomes inaccessible. I am able to ping the Dedicated IP, but that's about it. So the problem is probably that the Dedicated IP isn't pointing to the proper location where the website is, if you use the Server IP everything works fine.
So my question is what do I have to do to fix the problem and point the Dedicated IP to the proper location? Is it something that the Host has to do for you or is it just a simple file edit as root? I am using CentOS 5.3 64-bit as my Operating System with cPanel/WHM as my Control Panel.
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Apr 8, 2009
I've run into an issue lately with a few servers that I support and I'm curious if anyone has any suggestions on how to approach the issue?
Scenario:
The server will stop responding to new network connections, I can ping it, but nothing more. When the DC looks at the server, they find the error " Out of Memory " on the console.
What is a good approach to troubleshooting these?
Here is what I do, if I'm off base, I'm here to learn and will read
find / -name "core.*" -ls | egrep core.[0-9]
**try and find software failure
df -h
**validate disk usage
** check /var/log/messages /var/log/dmesg
If I can't find anything obvious in those places, I start digging through the access_logs and error_log to try and find a giant influx of requests that could have hit the server too quickly to process thus filling the memory up.
In this case, I adjust the rlimits.
*shrug* This is not fixing the issue on a few servers and I'm curious how other people approach this problem? Could this be hardware?
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Oct 20, 2009
I can't say that I can recommend CheapVPS's (VAServ) services to anyone. In the end of July, I bought a VPS from them.
Had some initial troubles with the set up - they accidently set up 2 VPS's for me and set the wrong amount of memory, but that was solved by sending a support ticket. Wanted Debian instead of CentOS, another support ticket.
In the end of August, I canceled it - mostly because I didn't need it anymore. However, September already came and I was charged for the VPS. I sent a ticket to their billing department asking for a refund, and they gave it to me, no problem there.
I go on with everyday life, until October comes. I guess I forgot to cancel the PayPal subscription for my VPS because I'm charged for it once again. I promptly cancel the subscription and fire off a support ticket.
This time, they're insanely slow to respond to this. I sent a ticket in on Oct 1. and I get a response on the 8th: they ask me for a PayPal transaction ID. I send it to them, and I haven't received any reply since.
On Oct. 15 I tried adding a new comment to my support ticket, but I still have not received any response.
Today, I try to nag their live chat salesperson and they tell me that they've "added a note on my ticket for the billing department".
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Dec 23, 2007
I've been having this problem for the past week: everyday in the afternoon my dedicated server goes unresponsive for about an hour or so--you can FTP into it (upload and download work fine) and access the control panel, but it refuses to serve up any webpages / files through the browser (no one can access my site). Meanwhile the CPU / RAM seems to be just sitting there being completely unused. This problem just starts by itself and then goes away by itself somewhat regularly. Restarting the server has no effect on this.
I'm puzzled as to what the problem could possibly be or how I can fix it--any ideas? My server's running Fedora 6 / GoDaddy control panel.
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Nov 3, 2009
Server load is under 1, nearly 0 io.
Ping between 200-300, normally it is around 50.
DC says their network is fine and it is my server.
So load under 1, almost no hard drive access, why is the ping so high?
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Jun 10, 2008
Has anyone had any more luck getting a response to either tickets or emails from Burton Hosting since the last thread here, which is months old? Our uptime remains decent, but with absolutely no responses to tickets (we have many outstanding by now) or emails (both to the standard network and support addresses and to individuals personally), and their phones disconnected, we of course are very concerned, and will probably be forced to look for a new host (I just hate the hassle!!) when our contract expires next month.
I did find in another forum posts about a Virante Marketing fiasco in which Burton was falsifying reviews, etc.---this does NOT sound like the Burton I knew before.
While we have exploratory emails out to DreamHost and a few others, I was hoping someone here would know a way to contact Burton---I just hate not knowing!
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Jun 21, 2009
I have a VPS with following features: Dual Xeon, 512MB Ram (up to 1GB), CentOS.
Unfortunately MySQL is frequently down, about once per day, and it takes time to set up again. to change mysql config to resolve this issue?
my.cnf:
PHP Code:
[mysqld]
skip-bdb
max_connections = 250
max_user_connections = 30
thread_concurrency = 1
key_buffer = 128M
myisam_sort_buffer_size = 32M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 1M
record_buffer = 1M
max_allowed_packet = 8M
table_cache = 200
thread_cache_size = 64
wait_timeout = 10
connect_timeout = 10
interactive_timeout = 10
max_connect_errors = 10
query_cache_type = 1
query_cache_limit = 1M
query_cache_size = 8M
skip-locking
safe-show-database
#log-slow-queries = /var/log/mysqld.slow.log
#long_query_time = 2
[mysqld_safe]
open_files_limit = 8192
[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer = 64M
sort_buffer = 32M
read_buffer = 16M
write_buffer = 16M
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Jun 10, 2007
I have a server from FDCservers
My server is down at least 2 times a day causing downtime of 10 minutes to hours!
Configuration:
Core2DUO E6600
1 GB RAM
400 GB HDD
100 mbit port
cPanel/WHM/Fantastico/Rvskin
CentOS 4.5 32 bit
They swapped the RAM many times but still it sisnt resolved
I asked PSM to look why it crashes, they said that its working fine and tweaked settings. Please open a ticket again if it goes down again.
I am not going to open a ticket again and again everytime when it goes down since I am not online everytime.
When it crashes(or whatever) it responds to ping requests but not to http ssh ftp or anything else including cPanel/WHm.
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Apr 28, 2009
This is the Strange problem i face. my blog goes down while the server is up, comes back automatically after some time.
I can access the Cpanel without a problem, can anyone tell whats wrong?
Code:
C:Documents and SettingsGaurish>ping [url]
Ping request could not find host [url] Please check the name
d try again.
C:Documents and SettingsGaurish>ping [url]
[url][67.228.104.181] with 32 bytes of data:
Reply from 67.228.104.181: bytes=32 time=495ms TTL=50
Reply from 67.228.104.181: bytes=32 time=468ms TTL=50
Reply from 67.228.104.181: bytes=32 time=500ms TTL=50
Reply from 67.228.104.181: bytes=32 time=515ms TTL=50
Ping statistics for 67.228.104.181:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 468ms, Maximum = 515ms, Average = 494ms
During this i don't change any setting, so less chance misconfiguration
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Jan 11, 2009
My Awstats is updating every other day and I would like it to up date daily.
I am in my third month of hosting and in about first 2 months, Awstats would update every day.
I have searched and read where it is possible to get Awstats to update manualy but it seems that my scenario isn't the same as everyone else's.
I am accessing my Awstats through CPanel and there is no way that I see to modify when Awstats updates.
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Oct 3, 2008
I've been running 3 Xen servers for the last few months in a production environment, and facing a strange problem with one of them.
Server 1 and 2 run a couple of DomU's and are running just fine.
Server 3 runs one DomU and takes care of all the backups for the DomU's of Server 1 and 2
The DomU on Server 3 is crashing every night, right when the backups are being made.
DomU becomes inaccessible, but keeps appearing at xm list with state ------
When I try to connect to the console it wont let me connect. The only way to get the DomU back up is by using xm destroy and xm create again.
For the back-up I use NFS where the DomU on Server 3 is the host, and the other DomU's of Server 1 and 2 connect to it through an internal bridge.
Below you'll find some information about Server 3:
Hardware:
HP ProLiant DL380 G5
10Gb Memory
( 8 x 146G SAS10k in RAID 5 )
Dom0:
CentOS 5 kernel 2.6.18-92.1.10.el5xen
Booting params: dom0_mem=1024M
DomU:
CentOS 5 kernel 2.6.18-92.1.10.el5
Booting params: acpi=off clock=pit
The last qemu-dm log on Dom0:
char device redirected to /dev/pts/1
qemu_map_cache_init nr_buckets = 4000
shared page at pfn bffff
buffered io page at pfn bfffd
xs_read(/vm/a8af3ec4-19d4-774e-af65-0902374dc616/rtc/timeoffset): read error
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
Triggered log-dirty buffer switch
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
xs_write(/vm/a8af3ec4-19d4-774e-af65-0902374dc616/rtc/timeoffset, rtc/timeoffset): write error
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May 1, 2008
this is getting out of control. I have a dedicated server that is "unmanaged" meaning, I manage it
I typically can make my way around a server and do most things - but in this case I'm stuck. I host a number of websites on this box and have went over a year with little problems. The past month or so it seems as though the server crashes daily or every other day. It will be running just fine, then all of a sudden the processes and loads will go out of control until the server is just unusable.
What do I need to provide here for you to be of any help to me? I watch the processes using "top -ci" and it's typically small output - but when it's getting ready to crash it's like a ton of processes get backed up and continue running.
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Jan 17, 2008
I am running shoutcast on a spare dedicated system, for some reason it has been buffering a little to often for my liking.
I am running 64 kbps for 300 listeners and buffering problems become frequent around 150 listeners.
Is there anyway I can reduce the frequent buffering (be it hardware or software doesnt matter).
Latency seems very high (1100ms)
Would the fact that the server has been running continuously for 6 days have anything to do with it?
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Jun 8, 2014
OSCentOS 5.6 (Final)
Panel version11.0.9 Update #61
The system is up-to-date; last checked at June 6, 2014 03:32 AM
I use pingdom to alert me when sites go down. It would happen only once every few weeks, and I'd just reboot the VPS from my provider's control panel, however in the last 24 hours it has started doing it more and more often. The only change I have made in this time is to delete a few unused web sites.
When I get alerted, I check the the domains and they won't load. I look at the plesk control panel page thought and that does work.
I can SSH in, but I can't see anything that might work in the messages log.
I removed the plesk control panel error as that only seemed to happen once and is not happening anymore.
I saw quite a few entries in the /var/log/secure log and so I added iptables rules to only allow SSH access from my own IP and to DROP all other requests. It seemed fine for a while, but after 12 hours it has started becoming unresponsive again until reboot.
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Oct 30, 2009
globichen can explain about this.
ping timeout happen frequently.
this is the 2nd time happen in a week
i've submit a ticket regarding about this
customer service replies with server is online.
i'm not bashing their service but frequently ping timeout really makes my business down lately.
Loading website takes a few min & even couldn't access to server due to ping timeout.
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Oct 10, 2012
- Apache version : 2.2.21
- operating system : MAC OS Lion Server
- mod_ssl : 2.2.21
I have a certain area on a homepage which is protected by an .htaccess file. The code of the .htaccess file is the following:
Code:
AuthType Digest
AuthName "Password Required"
Options +Indexes
# code for HTTPS
RewriteEngine On
RewriteCond
%{SERVER_PORT} !^443$
RewriteRule (.*) https://%{SERVER_NAME}%{REQUEST_URI}
Require valid-user
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>
[Code] ....
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May 16, 2007
Code:
Kernel Version2.6.18-4-686 (SMP)
Distro Name Debian 4.0
Model Intel(R) Pentium(R) 4 CPU 2.40GHz
I've installed the default apache 2, mysql, php using aptitude.
The server load is not at all high, around 1-1.5 max. The apache processes running are at an avg 60-80. It has 1GB ram and Disk Swap usage is 0kB
My server keeps rebooting every now and then. These are the messages I get in the ssh session just before the reboot..
Code:
Message from syslogd@xxx at xxx
kernel: Bad page state in process 'apache2'
kernel: page:c17bc0a0 flags:0xc0000000 mapping:00800040 mapcount:0 count:0
kernel: Trying to fix it up, but a reboot is needed
kernel: Backtrace:
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Dec 24, 2007
Currently i am running my webhosting at server A and email hosting at server B.
Possible for me to make the email mx entry available on both server instead server B?
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Jul 7, 2007
I recently setup a few new webservers, had everything working fine, I am giving each website a dedicated IP, I was trying to tweak the DNS output on dnsstuff.com, I was getting a warning for:
"Mail server host name in greeting"
So, I added a "a entry" under the particular domains DNS to point to the main server IP, that did take care of the "mail server host name" but come to find out that really screwed up alot of stuff..
For instance, the site that has the dedicated IP and the new "a entry" will not work now unless I change the sites IP in the WHM to point to the main host IP, If I change it back to the dedicated IP or any other dedicated IP, it just gives a list of "dir files" for that domain.
Is there anyway to get rid of this "a entry" that I have added for that domain to take it back to normal.
Also, if I take a domain name that is already in the system and working fine with its own dedicated IP, and try and move it to a new dedicated IP it messes that domain name up also, and then can only be accessible by changing it back to the main server IP..
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Jul 26, 2008
I'm on a VPS and every day I get the following message if I loginto WHM:
The server was unable to lookup an an A entry for its hostname (vps.glse.net). This is generally because the entry was never added. However this could also be the result of your nameserver(s) being down. If you would like to attempt to automatically add the entry
After that I add the A entry, and setup the Resolver and restart BIND, after that it is usually working again until I have to do it again the next day.
The hostname (vps.xxxx.net) resolves to . It should resolve to 72.18.xxx.xxx. Please be sure to correct /etc/hosts as well as the 'A' entry in zone file for the domain.
Some are all of these problems can be caused by
/etc/resolv.conf being setup incorrectly. Please check this file if you
believe everything else is correct.
my /etc/hosts
72.18.xxx.xcentos-cp--template
72.18.xxx.xxxvps.xxxx.net vps
72.18.xxx.xcentos-cp--template.xxx.com centos-cp--template
72.18.xxx.xxxvps
127.0.0.1localhost
my resolver.conf
nameserver xx.xxx.xx.xxx
=> I tried adding the nameservers from the server here but that didn't help so I had to use that of the hosting company
The A entry is empty, as stated in the mail,
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Sep 4, 2007
I do not need more than 1go space / 250go bandwith. Do you think I can have this for about 20-25 $?
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Dec 12, 2008
If i add a wildcard entry in forward lookup zone then Do i have to put a wildcard entry in reverse lookup zone?
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Feb 4, 2006
I apoligize in advance if this is the wrong place to post this thread.
I am trying to create a CNAME entry in my DNS tables and have no clue where to begin.
I have did a search but didnt find anything that gives reference on how to do it just how to fix errors.
Can anyone point me in the right direction to learning how to accomplish this task.
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Jun 7, 2009
we are expanding to offer vps. i have seen diferent servers config. but am not sure what to choose in terms of hardware
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