Unresponsive Server Mystery
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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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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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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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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Apr 19, 2007
I am designing a site for a client and in all the years I've done design etc, I've come up against a phenomenon with their VPS server they have. It's linux and uploading files I am using WS_FTP Home.
I am uploading files and folders to their public_html/domain.com/ (*I use domain here for their privacy) and in some folders (directories) after doing so, a mystery folder suddenly appears that is named 5" and as you enter that folder, you see the path directory show up "public_html" and if you go into that one, you come up to the domain.com folder again, and if you deeper into that one you start to see this phenomenon of mirroring folders of the one you go into. Example:
public_html/domain.com/images/5"/public_html/domain.com/images/file
***the file whether it's an image jpg, png, etc is created as the last directory as a folder, not a file. I should also mention that as you go deeper in the 5" mystery directory folder, you no longer see the path in the FTP anything past the 5" one even as you go further in.
Oh, and it doesn't allow you to delete these 5" folders regardless of what permissions. And this folder seems to show up in many areas of this website's directory structure...mostly where images are (don't know if that is just a coincidence).
So hope all this makes sense....anyone seen this before and what the cause could be? Their host doesn't seem to know the reason and says they cannot see it even though others can. They said it's the FTP program as the cause and not their server.
My comeback to that is that I've used this FTP for years and never before seen this happen. It's only with this one client's server.
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Jan 29, 2009
I'm having an issue with a client site and I am not sure what to do at this point. Conversations with the host (GoDaddy) haven't led to a solution and to be honest, I'm not sure it's their issue to handle although I will be firing off an email to their domain dispute department shortly. I spoke with a couple of supervisors there and they were as baffled as I am.
Here's the situation:
When people Google the name of the client's business, it returns their site but on a different domain. The entire site is there, nothing is changed but the URL. It's like having an unintentional mirror site except that none of the forms work which is what tipped off the users that something was wrong but of course, they don't notice that they're not actually on 'www.clientsite.com' so they think it's just a form error when in actuality, they're not even at the right domain.
There is really no way for this other domain to profit from mirroring the client's site; it's just a business profile type of thing with a few forms for contact, employment applications and vendor applications. No secure info is transmitted other than perhaps the occasional email address but we're not talking a heavy volume site, it's a niche market and really not something that would be a typical target. There's no eCommerce, no subscriptions, no financial info.
I'm at a total loss. Could this happen if this other site is hosted on the same server as my client's site? Could it be an actual error of some sort or would it have to be intentional?
The whois for this bogus site leads to DomainsbyProxy.com and I'll be sending them a letter as well but I'd really appreciate any input you all might have on HOW this could happen. Should I also contact Google?
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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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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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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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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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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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May 8, 2007
I've got a VPS which is serving as the main server for a number of sites. Web Server, SSH Server, and Mail Server.
What I've got running:
Apache2, PHP5, MySQL5, Dovecot, Postfix
One of the sites is a growing forum with a MASSIVE photo album. This is the site where I notice the most slowness.
Changing the server software is not an option - Only optimization.
Quote:
Originally Posted by httpd.conf
ServerTokens OS
ServerRoot "/etc/httpd"
PidFile run/httpd.pid
Timeout 300
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 5
<IfModule prefork.c>
StartServers 8
MinSpareServers 8
MaxSpareServers 13
ServerLimit 256
MaxClients 256
MaxRequestsPerChild 50
</IfModule>
<IfModule worker.c>
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>
Listen 80
LoadModule auth_basic_module modules/mod_auth_basic.so
LoadModule auth_digest_module modules/mod_auth_digest.so
LoadModule authn_file_module modules/mod_authn_file.so
LoadModule authn_alias_module modules/mod_authn_alias.so
LoadModule authn_anon_module modules/mod_authn_anon.so
LoadModule authn_dbm_module modules/mod_authn_dbm.so
LoadModule authn_default_module modules/mod_authn_default.so
LoadModule authz_host_module modules/mod_authz_host.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule authz_owner_module modules/mod_authz_owner.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule authz_dbm_module modules/mod_authz_dbm.so
LoadModule authz_default_module modules/mod_authz_default.so
LoadModule ldap_module modules/mod_ldap.so
LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
LoadModule include_module modules/mod_include.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule logio_module modules/mod_logio.so
LoadModule env_module modules/mod_env.so
LoadModule ext_filter_module modules/mod_ext_filter.so
LoadModule mime_magic_module modules/mod_mime_magic.so
LoadModule expires_module modules/mod_expires.so
LoadModule deflate_module modules/mod_deflate.so
LoadModule headers_module modules/mod_headers.so
LoadModule usertrack_module modules/mod_usertrack.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule mime_module modules/mod_mime.so
LoadModule dav_module modules/mod_dav.so
LoadModule status_module modules/mod_status.so
LoadModule autoindex_module modules/mod_autoindex.so
LoadModule info_module modules/mod_info.so
LoadModule dav_fs_module modules/mod_dav_fs.so
LoadModule vhost_alias_module modules/mod_vhost_alias.so
LoadModule negotiation_module modules/mod_negotiation.so
LoadModule dir_module modules/mod_dir.so
LoadModule actions_module modules/mod_actions.so
LoadModule speling_module modules/mod_speling.so
LoadModule userdir_module modules/mod_userdir.so
LoadModule alias_module modules/mod_alias.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
LoadModule cache_module modules/mod_cache.so
LoadModule suexec_module modules/mod_suexec.so
LoadModule disk_cache_module modules/mod_disk_cache.so
LoadModule file_cache_module modules/mod_file_cache.so
LoadModule mem_cache_module modules/mod_mem_cache.so
LoadModule cgi_module modules/mod_cgi.so
Include conf.d/*.conf
User apache
Group apache
Quote:
Originally Posted by my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
[mysql.server]
user=mysql
basedir=/var/lib
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
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Mar 7, 2009
I looked a lot - can not find solution ....
I want to transfer a file from [url]to [url]or [url]Without it will pass my localcomputer (slow upload)
It can be also a script i will install like this one - this is only for images
[url](remote)
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Oct 16, 2013
I have Plesk 11.5 (service provider mode) on a Windows 2008 server IIS7.Most of my sites are developed in .asp and therefore i use a custom 500-100.asp error page that check s the IP of the visitor then displays either a friendly error, or if its my IP a full error of what has happened (it also emails me the error). This allows me to debug pages easily whilst developing and to keep an eye on anyone trying SQL Injection hacks on my sites (as the error and email also have session variables and IP address).I dont have root access to the server as it is a Webfusion dedicated server.I have following the Plesk documentation -
1) Switch on custom errors for the subscription
2) Look in virtual directories and navigate to error documents
3) Find the error in question (500:100) and change it to point at either a file or URL
FILE - I had the data centre add in the 500-100.asp error page in to the virtual template so that my page is available in the list of virtual files - this didn't work but that maybe because its not a static page??
URL - when i add the path it says its incorrect, if i add a fully qualified address, it accepts it but it doesn't work.give me a specific example of the URL that can be entered relative to the root as the format in the documentation isn't accepted. The last step is to restart IIS which is also an issue as i cant seem to do this from the Plesk panel..It is as if it isn't catching the 500:100 error, and only catching the general 500 error??
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Nov 21, 2006
I am currently running Google Analytics/Urchin 5 (v5.7.02), on a server, the server has started to act up, (on its last legs etc) and now I am trying to transfer the Urchin Software to a new server, where it would work effectively.
However upon installing the urchin software on the new server and running it (localhost:9999), I am presented with An Action Items Page, and these following choices
Obtain Demo License
Buy License
Activate Pre-Purchased License
I choose ‘Activate Pre-Purchased License’ pop in the Serial number and complete the registration then…
---------------------------------------------------------
Urchin Licensing Center -- Error!
An error has occured during your transaction, please use the back button and correct the problem. The specific error message is:
• Unable to generate a license. Some possible reasons:
Your serial code is currently active <<< How do I disable it and use it on another server?
---------------------------------------------------------
So all I want to do is deactivate the serial and reactivate it on another server.
Does anyone have experience with this or a similar problem or have a solution to this problem. Any help be most appriciated.
Or even a Contact Number so that i can get some one over the phone!
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Nov 7, 2009
This is the scenario, domain.com are setup on server1, however server2 also has the same profile of domain.com as we use ns3 and ns4 using domain.com. This works fine with the nameserver setup on server2.
However I encounter problems as the emails from server2 won't reach server1 as there are duplicate profile on server2.
My question is how do I setup the DNS in cpanel/whm from server2 so the emails from server2 will reach server1?
Server1 (www.domain.com)
ns1.domain.com
ns2.domain.com
Server2
ns3.domain.com
ns4.domain.com
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Apr 22, 2009
I just want to use a server for file sharing, it will have nginx and that's it. I'm looking at centos, or freebsd, but I been using centos forever now and I'm not sure how to use freebsd, should I just stay with centos?
Do I tell my hosting provider to just install the OS and give me ssh action and that's it? Don't install any control panels or any other stuff? I want one domain and one subdomain on it though and ftp action.
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May 12, 2009
Remote Spamassassin for Multiple Smartermail Server
I want to setup Remote Spamassassin(On Linux) for Multiple Smartermail servers. I want to the setup the spamassassin on a linux box
How i can setup this with multiple smartermail servers.
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Jul 4, 2007
what is the fast and best way?
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Jul 20, 2015
I'm wondering whether it is possible to perform a full server migration to a new Plesk server with the same hostname or will Plesk give an error about the hostname being the same?
The new server would not be accessible by hostname (only via IP) until DNS and glue records were changed after the migration.
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Aug 31, 2008
I've been developing a small 2D MMORPG lately. I bought a VPS to run the server on a few days ago and sadly it doesn't work so well. Sometimes the loads go pretty high (afaik not caused by me) and MySQL freezes, causing the server to just wait for MySQL to unlock, hanging all the players around on the map. Not a good thing.
Anyway, the game is very small scale, and I'm not planning to have more than maybe 30-50 players online. It does not suck up much CPU, I had ~10 guys online and loads stayed down at 0.00 on the VPS box.
Problem with getting a dedicated is our very low budget. As I'm still underage and living at home hammering my pc and don't have any real incomes, we're talking numbers like $ 30 - $ 50 USD per month - it's really hard to find for that price in Europe.
Requirements:
Monthly payment, $ 30 - $ 50 / month, no setup (or very small setup, like $ 20)
10Mbit/s or faster connection, 100GB traffic should do
500MHz CPU is all cool
512MB or more RAM
5GB diskspace is enough
Has to be in Europe due to ping times (< 100ms)
Linux, Debian 4.0 prefered
If anyone knows where I could get something like this for a low price, $ 30 to $ 50 USD, it'd be great.
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Aug 28, 2009
I have been searching everywhere trying to find a tutorial but It is not going anywhere. Basically I need to create 2 nameservers for Godaddy and pretty much so when i type http://mysite.com it goes to my site. I can access everything from http://myip and everything works. Now is there a step by step on how to actually do it in the DNS Manager? I need help like what IP address do I use is it the router ip? The external IP?
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Mar 2, 2009
i want to shift my domain to one server to another server and the problem is how can i shift my email accounts data to one server to another server.
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Dec 8, 2008
Site is currently running on a single code single cpu p4 server. Am thinking of upgrading to a quad core Xeon server.
My site is pretty dynamic with lots of hits to php / mysql, and has trouble keeping up with the requests sometimes. Would a quadcore Xeon significantly help?
Server Software:
Windows 2003 Server
php 5.2.6
apache 2
mysql 4.1
Current Setup:
P4 2.8 single core/cpu.
Proposed setup
Xeon 3210 quadcore
I guess my confusion lies in the following:
1. Can win2003 server make use of the quadcores?
2. Does php / apache / mysql make use of the quadcores?
3. Will i see a significant increase in the amount of pages i can serve?
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Oct 23, 2009
I need to move an SSL certificate from a cPanel server to a Plesk server.
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Feb 11, 2009
What is the difference between a virtual private server and a dedicated server?
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