Website Stops Responding
Apr 21, 2009
I have 3 servers ServerA(Web, mail), ServerB(MySQL+Master replication), ServerC(Mysqlslave+web)
It happens that my website stops responding for few mins and then it comes back again automatically. I checked the server logs but I couldn't find any suspicious.
Also, while the website is not accessible when I try to connect internally from ServerC to ServerA or ServerB using SSH. It takes lots of time (approx more than 60 seconds) to connect. When website starts working SSH is also working fine.
This is very complicated for me. Can anyone let me know what should be the problem or how can I find root cause of this problem?
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Mar 24, 2009
I have a very strange problem. Yesterday morning I got a "server down" alert. Restarted httpd and everything run ok ... until today morning, the same problem again.
Symptoms:
1. The webserver did not stop working, it just took too much time to respond.
2. I cannot find anything suspicious in the logs.
3. I started to log the number of apache processes in 4 minutes interval, it did not increase during the failure but remained at a very reasonable number.
4. Now, almost 3 hrs from the last failure, there are 36 apache processes, each eating 14M RAM, server has 4GB ram total, no swapping, almost 3GB are free (cached).
The question is.
How should I prepare for the expected tommorow failure, to be able finaly localise the problem?
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May 19, 2015
Since 15.05.2015 smtp experiencing problems.
Smtp service (qmail) stops responding on port 25:
# time telnet localhost 25
Trying 127.0.0.1...
quit
quit
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
quit
quit
Connection closed by foreign host.
real 4m10.629s
user 0m0.000s
sys 0m0.002s
After server restart or sometimes apache stop or ixnetd restart its responding for a some random time, and then again it stops to respond. Plesk panel show it as stopped but qmail itself running in memory, and does other its work, it just stops responding at port 25, or responds with a huge delay.
I've tried change it to postfix, reconfigured with mchk, repaired with repair.sh -r, disabled and uninstalled parallels antivirus, antispam, dnsbl, disabled firewall, disabled smtp lock. Checked apache, dns. Enabled submission port which works when 25 port doesnt, but i need working 25 port.
Nothing solves problem, its just stops responding after some random time. There is no errors on maillog.
I think this problem occured after recent plesk microupdate, because i didn't do anything to server configuration in last months.
This article says it might be dnsbl [URL] .... but it disabled(from plesk panel) on my server, maybe there is way to focefully kill any relation to dnsbl?
Plesk info:
OS Red Hat Enterprise Linux Server 5.9 (Tikanga)
Panel version 11.5.30 Update #50, last updated at May 18, 2015 05:21 PM
The system is up-to-date; last checked at May 17, 2015 10:56 PM
update: xinetd restart is definitely brings smtp alive, but it goes off after random period of time (5min ~ couple hours)
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May 29, 2008
The problem is that it switches from running to mounted without me having anything to do with it. It seems to be quite randomly, for example this morning at 1.42 am. This happens once a day and stops my vps and therefore my website - which is quite annoying.
I checked for log files or anything, but there was nothing mentioning resources or anything.
Does anyone have a clue what this might be? If I cannot fix the problem there is still the opportunity to just start the vps once it goes to status mounted. How would I automate this?
I am using Virtuozzo and Plesk.
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Jun 7, 2007
i have a VPS on which i host one of my Proxy site and nothing else (no databases, no emails, just the usual proxy files needed).
just today it stopped working it is showing the Centos Page .the URL is [url]
here are the steps that i have taken till now without success:
1. restarted the server
2. stopped and restarted some critical services like httpd etc.
3. restarted my free crappy control panel also Ravencore
but all without success
if u feel that u can help me out then can tell u my webmin root password also via PM (u must be a reputed member).
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May 14, 2009
i'm unable to the response times of my server. The server resolves the correct ip to the ping domain but gets a request timed out.
I'm using a firewall but i don't know whether is that the case. If so what should i do to correct this issue.
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Aug 5, 2009
i've been trying to contact Gigenet Sales for over 24hours via email and live chat, but no reply from both email & live chat.
is gigenet reliable?
i've seen many great review about Gigenet but why can't they reply my sales inquiry?
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Jan 6, 2007
a pretty weird problem is happening on one server
# ps -auxw | grep exim
mailnull 538 0.0 0.4 5448 2044 ?? Ss 7:16AM 0:00.01 /usr/local/sbin/exim -bd -q30m (exim-4.64-0)
mailnull 1568 0.0 0.4 5448 2048 ?? S 7:22AM 0:00.00 /usr/local/sbin/exim -bd -q30m (exim-4.64-0)
# telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to localhost
Escape character is '^]'.
and nothing else... I don't get the EXIM banner, so many things are not working
mainlog or rejectlog says nothing about that...
mainlog just says everything is ok after I restart it:
exim 4.64 daemon started: pid=1664, -q30m, listening for SMTP on port 25 (IPv6 and IPv4)
I find it strange too that sockstat and netstat doesn't show anything about the smtp server (this is running FreeBSD):
# sockstat -4 | grep 25
# netstat -an | grep 25
# sockstat -4 | grep -i smtp
# netstat -an | grep -i smtp
#
I tried to use the default config and got the same error
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Apr 12, 2008
whenever I attempt to install RoR, libsafe stops me, how do I diable libsafe so I can install RoR, then re-enable libsafe.
[root@server1 ~]# gem install rails --include-dependencies
Libsafe version 2.0.16
Detected an attempt to write across stack boundary.
Terminating /usr/bin/ruby-bin.
uid=0 euid=0 pid=20960
Call stack:
0x4c0e6871 /lib/libsafe.so.2.0.16
0x4c0e6c5d /lib/libsafe.so.2.0.16
0x80549b8 /usr/bin/ruby-bin
0x8054a52 /usr/bin/ruby-bin
0x80556af /usr/bin/ruby-bin .....
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Jul 26, 2007
I have an account on my cPanel server with a cgi script in it wich works just fine under normal circumstances. I setup mod_perl and got it working just fine with the script. I edited the .htaccess file to do a 301 redirect and added the line “RewriteEngine on” and then whenever I try to access the cgi script I get:
Quote:
Forbidden
You don't have permission to access………..
If I disable mod_perl or remove the line “RewriteEngine on” from .htaccess it works fine.
In the cPanel error log I have:
Quote:
Options FollowSymLinks or SymLinksIfOwnerMatch is off which implies that RewriteRule directive is forbidden
But in htaccess I already have the line "Options +FollowSymLinks" which is part of the 301 redirect code.
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Feb 8, 2009
it has been over 36 hours since I submit a ticket to GixxerPC because I can't login to my client account and I want to cancel my VPS.
I guess they have decided to close their doors to me once I asked for a cancellation because a friend of mine is letting me use his VPS.
I am hoping that this topic will catch the eyes of some GixxerPC staff so they will answer my ticket.
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Feb 17, 2008
I have submitted a ticket 15 days ago and still no response from Talanovbackup.com. I mentioned an error on their site which seems to be fixed now but I am still unable to login to my data by SSH.
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Nov 16, 2008
We got a trouble with their service and they don't reply our complain message looking for a good solution. Up till now we still waiting for their respond..Asish...WHERE ARE YOU...!
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Oct 31, 2008
Server is responding slow!
My server is responding slow
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May 18, 2008
our site is having problems since a week or so our forum is down, our emails are all down
we have 10 staff using different aliases on the same email domain our hosting provider is bluefishhosting.com we have been unable to reach them since the last week we have contacted the company that bluefish buys their reselling account from, but they also tell us to wait another 7 days our office cannot bear this down time of 14 days
IS THERE ANY OTHER FASTER SOLUTION?
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Dec 2, 2014
recently I have update our Apache 2.2 instance to 2.4.10, and started using Apache in Windows 2008 R2 64 bit (before we were using it in Win 2003). Our Apache is used mainly as reverse proxy to 3 apps. Well, it seems that, even if I have scheduled a nightly reboot of its service, every day it hangs, becoming unresponsive and forcing us to restart it to make it work again.
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Apr 3, 2008
Recently I've upgraded my MySQL server. I connect to it via a conection from NIC to NIC (Internal IP addresses). Since the upgrade/format, I've managed to get everything back to the way it was. Everything works fine for 15-20 minutes. Then the PHP server can no longer access the MySQL server.
I tried logging in from the PHP server, I get access denied. I then tried logging in locally, on the MySQL server and I get in fine...
It's not like it's a firewall issue though, it's strange...
I tried updating PHP/MySQL to a few releases, even the RC's to no avail...
Something to note is that when I try restarting MySQL it can take 4-5 minutes, sometimes not even complete.
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Jan 4, 2008
I have a phpBB forum, which uses MySQl database.
For the last two months the forum has been going down every couple of days because the database service has been continuously stoped running on the server with no reason.
What can cause such a frequent database failures?
Can someone attack the forum/database/server in a way that will cause the above problem?
(there is a good reason I consider this possibility very seriously)
How can I prevent futher database failures?
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Oct 1, 2007
Many, many people seem to be having the 2002 error over the past 24 hours on phpmyadmin with cpanel
Doing this edit to the config got it going for me:
[url]
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Dec 11, 2008
ThePlanet not responding to a ticket for nearly a week?
I've used theplanet for years, but haven't used their support much. But after getting a new server, I discovered the configuration wasn't as promised (it was missing 5 IPs).
I left a ticket last Friday afternoon (12/4), but no response so I called support on the weekend. Although he promised they'd expedite it, the only result was a slightly sarcastic post to my ticket implying my expecting an acknowledgement within 24 hours was unreasonable.
I called on Monday, and the salesperson promised a manager would respond by Tue. Nothing by Wed, so I called again, and was promised that someone would contact me shortly but still nothing.
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May 21, 2007
I got my hands on a used 2161DS (unit only, no cables etc), but somehow it doesnt seem to respond on the hyperterminal to any keyboard input.
As its used it doesnt have any support directly from Dell and Dell is unable even to give us a cost estimate as the service tag number is not in their system. Anyway...
When I power up the 2161DS KVM-Over-IP switch all I get in the Hyperterminal is
---
Verifying subsystem flash versions...
<snip>
DELL 2161DS Console Ready...
Press any key to continue
---
From there on its not working. The keyboard and mouse directly connected to it are working. Also all the menus, but we can set the network address, do firmware updates etc, only from the serial port connection (once the serial port is working).
I checked the hyperterminal settings (9600 baud, 8 bit, 1 stop bit, no parity, no flow control).
Is there anything that I might be missing?
Perhaps I have to use something like a crossed serial cable instead of a straight one ?
Character set issues?
Terminal type issues?
We have spent days in front of the machine and on the phone with Dell without really getting anywhere. Its our first 2161DS so I still want to believe that we must be missing something.
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Jan 17, 2014
I have a problem with slow Apache 2.4.4. It's only related with https which is in general 5 time slower than the same site via http. I see this difference on the monitoring software which is measuring response time to http and https every 5 seconds. In some cases i got even timeouts in the browser on https while in the same time site is opening over http - slowly but opens always.
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Feb 21, 2012
I use apache 2.4.1 and mod_fcgid (same config form apache 2.2.22+mod_fcgid 2.3.6) and without any error message, apache stop responding randomly.There is no problem with apache 2.2.22+mod_fcgid 2.3.6 and with apache 2.4.1 + php5_module i have
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Mar 29, 2009
I am having a very strange problem with 2 different cPanel accounts on a server with 500-600 accounts. For some reason after a day or two the mysql username/password stops working. We have tried changing the MySQL user and the password with no success. The log does not indicate that the MySQL password was changed in any way. Only these 2 accounts are affected and this problem occurred at least half dozen times each.
Again: these are two different accounts with 2 different MySQL users that after a while stop working (I am unable to determine if they stop working at the same time b/c they belong to different customers). When we reset the user (with the same pass) it works for a day or two. I have checked to connect not only from PHP but also from shell when it's down: it also doesn't work so this is a pure MySQL problem.
Also on the server we have Fantastico.
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Jul 21, 2014
Out of nowhere apache stops working, and I have to restart the httpd service that restablesca
The message it throws is "Service Unavailable"
The server is a CentOS Linux Centos 6.5
It has 24 cores and 24 GB RAM
These are the values ​​that I have in httpd.conf
Timeout 60
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 15
[Code]....
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