Server :: Httpd Sessions Never Terminate
Dec 10, 2010
I have an issue with my web server. We are running RedHat Enterprise Linux 3.0 with Apache 2.0 and Tomcat 5.5. The situation has arisen that the httpd sessions never terminate. New connections continue and continue to be created and never die. I have restarted the apache services to reset the connection and have even rebooted the server, however, to no avail. Yes, that does the trick of getting the web sites operational, however, this is not a solution.
I have searched and searched here, www.google.com/linux to no avail. I have looked through the apache.org bug tracker and can't find anything like what I am experiencing. This happened 6 months ago and I got lucky and it stopped, however, the situation has resurfaced. I have reviewed the logs and found nothing that provides any insight.
During the business day, the number of httpd connections continue to grow and I decided to let it see how high it would get before the web sites would crash. That magical number is 203. Now that it is later in the evening and about 2 hours since I restarted the httpd services, I now only have 59 connections. However, I'm fairly certain based upon the traffic on these 2 websites, that in the evening, there aren't many connections after 2000 hours.
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Dec 22, 2010
We started hosting some very large content on our site, and the usage patterns in cacti have revealed that the HTTP sessions through our load-balancers drop off dramatically right at midnight.
The logrotate process runs right at midnight, and issues a reload command through the service tool (CentOS 5.5):
Code:
$ cat /etc/logrotate.d/httpd
/data/websites/logs/*_log /var/log/httpd/*log {
missingok
daily
dateext
compress
rotate 7
sharedscripts
postrotate
/sbin/service httpd reload > /dev/null 2>/dev/null || true
endscript
}
Looking at the init script reveals that the reload section is suppose to trigger a HUP of the httpd process:
Code:
reload() {
echo -n $"Reloading $prog: "
if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then
RETVAL=$?
echo $"not reloading due to configuration syntax error"
failure $"not reloading $httpd due to configuration syntax error"
else
killproc -p ${pidfile} $httpd -HUP
RETVAL=$?
fi
echo
}
In which, Apache should reload it's configuration and start the new logfile without breaking current sessions. However that clearly isn't what is going on. I'm tempted to edit the logrotate script to trigger a HUP directly by cat'ing the PID file directly. Is this normal behavior for Apache when signaled with a HUP?
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Jul 30, 2010
We are using this url on our testing box and this ip is reverse proxy IP ( 10.192.64.52)
Without reverse proxy:- URL is working fine.
http://10.192.16.77/akc-qa/arsys/ser...TS000000001430
But with reverse proxy its putting escape [%25] in between %3a
[url]
Is it possible to write a rewrite rule to bypass escape [NE] for this particular URL?
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May 9, 2011
I'm using tigthvnc server on linux machine. Often my clients are closing their vncviewrs from close button ('X'), and not exiting gracefully their sessions from OS. How can I terminate the server when they do that?
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Jun 10, 2011
Running CentOS 5 x64 And today my httpd is running very slow and I can't find a fix. Looked all over different forums
When starting httpd I get the message: /var/lock/subsys/httpd': No space left on device I checked that directory above and there is no file called httpd tried rebooting server
Can't do updates too:
[root@u15438957 ~]# yum update
Loaded plugins: fastestmirror, priorities
rpmdb: unable to join the environment
[Code]...
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Jan 1, 2010
I have problem with sshd server, its authenticate user and then terminate the session. Here is debug log:
Jan 1 04:26:41 server sshd[29677]: debug1: userauth-request for user root service ssh-connection method none
Jan 1 04:26:41 server sshd[29677]: debug1: attempt 0 failures 0
Jan 1 04:26:43 server sshd[29677]: debug1: userauth-request for user root service ssh-connection method password
Jan 1 04:26:43 server sshd[29677]: debug1: attempt 1 failures 0
Jan 1 04:26:43 server sshd[29676]: Accepted password for root from xx.xx.xx.xxx port 50971 ssh2
Jan 1 04:26:43 server sshd[29676]: debug1: monitor_child_preauth: root has been authenticated by privileged process .....
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Aug 21, 2010
I've two internet based server ( xx.xx.xx.xx and yy.yy.yy.yy ) The Y server is running VNC server and is responsible for answering to VNC sessions. But I need to hide the IP of Y server so I want X server to be as VNC Proxy and redirect all VNC sessions to Y server.
I guess the best way is to use iptables but actually I can't get it working so
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Sep 19, 2010
I have installed fedora 13 in my system. httpd server is also installed. when I tried to start the service of httpd, following error message displayed: Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:80
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Dec 24, 2010
I'm new to Apache configuration so could be misunderstanding but shouldn't the characters highlighted in red below be removed?
Code:
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Jun 1, 2009
I have just configured CentOS server my new office. This is the first time I am using CentOS.
Whenever I am trying to change the webroot of the httpd server, it usually say "directory doesn't exist". whereas which can't be the case as it is home directory of the user.
To achieve this, what Do I need to do?
The second issue, I am facing that whenever I am adding new directories to public_html folder, it is not accessible. as the error page 404 is shown. I have changed the permissions to 0705 and ownership is also transferred to other user. What else is required to make new directories accessible by the web?
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Mar 23, 2011
I get the following error while starting apache httpd
Code: httpd: Could not determine the server's fully qualified domain name, using <Server's-ip-address> for ServerName I googled it and have come across the following solutions, all of them involve changing the ServerName setting in httpd.conf:ServerName localhost ServerName www.example.com:80 ServerName <ip-address-of-server> ServerName <hostname-of-machine/FQDN>
I am setting up httpd to be accessed from over a LAN, so i don't have a .com domain name. I am thinking of going with the first option, it seems to be working...
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Apr 11, 2010
I am trying to do a https access with virtual hosting with apache.
But when I install mod_ssl rpm httpd server does not start again
I am stumped
httpd -t shows syntax is OK
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Feb 10, 2010
I have a requirement of using a wildcard certificate for 5 subdomains running under apache httpd server and 1 subdomain under tomcat.Is there any possibility of using the single wildcard certificate both in tomcat and apache
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Jan 27, 2011
I've used NoMachine's NX software for some time, but on one of my machines it simply will not work. At first it did, but now when I log in it authenticates, starts downloading a session, but then drops dead. There is no hint of what the problem may be except in /var/log/messages on the server machine:
User 'bill' from '192.168.1.1' logged out. 'NXLogin::reset'
Notice that it's a login reset, after authentication went fine. Researching this I find the problem is often caused by a missing fixed font, which is remedied with an: # apt-get install xfonts-base --reinstall but that doesn't help. I have completely deinstalled and purged the three Nomachine packages on the server, deleting all associated directories, and reinstalled them, but no help. From my client machine I can log into a NX session just fine, so I'm sure it's not the client machine. The Linux version of this software has a limit of 2 sessions, and I suspect the server may have some bogus sessions open, but where? I've done a purge and deleted /usr/NX and /home/bill/.nx so where else could this be?
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Nov 9, 2009
accidentally I do something wrong with my server and the httpd folder missing and I need it to setup my mail server and anyone can help me what can I do without reinstalling my Cent OS? Here is the error msg :
[root@mydomain etc]# service httpd stop
Stopping httpd: [FAILED]
[root@mydomain etc]# service httpd restart
[code]....
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Jun 14, 2009
I would like to setup 2 linux machine each with two ethernet cards, and need to connect to two subnet e.g. 192.168.*.* and 10.0.*.* . If one linux machine out of order, the other will take over all the services(1 httpd and two named(192.168.*.1 and 10.0.0.1 as server ip). What network config is best and easy to failover to other machine?
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Sep 11, 2009
My server keeps freezing up requiring a hard reboot.
CentOS release 5.3 (Final)
httpd-2.2.3-22.el5.centos.2
Here is the error in /var/log/message
Sep 11 00:16:20 localhost kernel: httpd invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0
Sep 11 00:19:14 localhost kernel: [<c0459e7d>] out_of_memory+0x72/0x1a5
Sep 11 00:19:14 localhost kernel: [<c045b352>] __alloc_pages+0x216/0x297
Sep 11 00:19:14 localhost kernel: [<c045c5bf>] __do_page_cache_readahead+0xc4/0x1c6
Sep 11 00:19:14 localhost kernel: [<c0436d9a>] ktime_get_ts+0x16/0x44
[Code]...
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Jul 21, 2011
after installing Debian 6 on a server. When I try to install a software called ActiveCampaign, I get the following error ... "Your server does not appear to be handling sessions properly."I have install Apache, PHP, MySql and Perl already. Also, after the server restarts, I Webmin will not automatically start, even thou it is setup in the Webmin configuration to start with the server. I have to use /etc/init.d/webmin start from a command line after I su.
My last question is about ftp permissions. I have install proftpd and it seems to be working fine, but when I try to edit any file or upload, I can not. In order to upload and manipulate files, I am using WinSCP under root, wich is a big NO NO.Sorry for the three questions, but I figured I would ask all in one post, instead of creating multiple, since I already have your attention.
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Oct 5, 2010
Here's the setup: One x86 server (Red Hat 4) with two serial connections to an embedded linux device. One serial connection is to a power control so the device can the restarted, and the other is used for a console to this device. Both serial connections use minicom. People on my team VNC to the x86 server, where they find the two minicom sessions waiting for them as they are left open. I would like to automate connecting to the server and communicating over the serial lines.
Supposing I use ssh to the x86 server, could minicom be used over the serial lines without terminating the minicom processes seen through VNC? If not, is there a way to re-open those windows from within the ssh session, so a user who VNCs to the server won't have to reopen them? Could a single ssh connection control two minicom terminals simultaneously, or would there need to be two ssh connections? It is assumed a user and the automated process will *not* try to access the device at the same time; the automation would trigger during off hours.
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Jul 6, 2010
1-what is the shell command which allows me to know how many opened sessions on a mysql server?
2- what are the important points we can manage in a mysql server?
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Nov 24, 2009
I'm running VNC Server on CentOS5 on a brand new installation, this is for some of my students to use specific software via VNC on their machines from home that they otherwise don't have access to on their Windows machines. This has been working fine on our previous server for a few years but the hardware is now outdated so I have upgraded and put a fresh install of CentOS 5 on. This works fine for about 24 hours and then eventually one of the session ends up freezing where the user then can see everything on their session, the cursor can move but they cant click a single thing.
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Feb 23, 2010
I'm running Mandriva 2010.0 as a web server, i had 2 HDD in the erver. i dedicate 1 HDD just for LOGS and system backup (160 GB). i would like to change the log destionation directory from /var/log/httpd (defaults) into /backup/log/httpd how can i do that.? coz i couldn,t find the configuration in the webmin. that log would be useful for webalizer/awffull statistic in several days ahead.
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Apr 21, 2010
I need to run multiple httpd daemon. I have multiple ip's assigned on one interface and i want to run multiple websites on these ip's,
And i need to run multiple apache daemons for this. How can i do that
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Jan 16, 2010
I neded to make some changes to the httpd.conf file. Afterwards I tried restarting,but it won't restart.It's saying port 80 is already in use. after checking via lsof -i :80 I get this result:
[Code]...
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Feb 11, 2011
When I do " ps aux | grep apache " I can see that apache2 is running. But when I do the same thing for http or httpd there is nothing. I looked for this question in the forums but couldn't find it. I probably don't know just what to look for.I'm using the new Debian Squeeze, and was fooling around heavily with new software installations and modifications, and just noticed all of a sudden that I couldn't get on the internet - so I know I did something but don't know what.I can plug in a thumb drive with a bitnami joomla stack on it and run, " ~/tmp/joomla-1.6.0-0/./ctlscript.sh start "and that gets things going for the joomla stuff (apache, http, mysql, php), but that stuff is pretty self contained and does not effect the browser's attempt to reach the web.
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Oct 14, 2010
By default httpd will automatically start when reboot..?? Is there any command to stop it automatically when reboot??
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May 12, 2010
I have 5 websites running in a reverse proxy environment.On main server I am getting this error
Code:
NameVirtualHost *:80 has no VirtualHosts
[Wed May 12 12:18:10 2010] [warn] NameVirtualHost *:80 has no VirtualHosts
[code]...
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May 2, 2011
My mail server is getting problem since 3 days. It automatically get hang and httpd service get dead any time. How I can check what is effecting server, load, network traffic etc...
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Jul 16, 2011
I have a dedicated server which I run on him only one website which has about 11k-15k unique visitors per day.
The httpd processes stuck it almost everyday and I can't understand why... I fix it via "killall -9 httpd" and then "service httpd start". code...
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Jan 26, 2011
I am using qmail in my office. I am noticing this for more than a month. It is my daily routine to check the cpu utilization using top command and by using top different processes can be viewed. the apache process after 1 or 2 days shows cpu utilization of 100%. There is no affect on the server whatsoever of 100% because mail server has 2 processors of 4 core, i think so that may be the reason. Can any one explain why is this happening. What i do after that is i restart the httpd process and cpu utilization comes to normal. What are the reasons behind this and how to solve this permanently.
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