PHP Sessions In Load Balanced Enviroment, Database Or NFS
Mar 31, 2008
We have setup and are currently testing a load balanced cluster using heartbeat and ldirectord. One of the problems we have come across is that we are unable to reliably use the same web server for connections from the same user. As a result the php sessions are getting in a bit of a muddle.
Obviously its not something that we can easily sync between servers like the customers other web content. We are looking at either storing the sessions in a database or NFS.
The site is pretty busy and we are a bit worried that when the site goes live both these options will slow everything down.
Apart from using different load balancing software is there any other solutions we could use for this? Has anyone stored php sessions in a database on a busy site or on a NFS?
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Jan 30, 2007
One of our customer is looking to use wild card SSL on one of his site hosted with us, he needs clarification on following.
Quote:
We want to have load balanced site serving contents from three different Apache on different physical machines. Site needs SSL security and we will have wildcard SSL for it. However, since the CSR is generated from one apache, will the SSL certificate give errors or alerts if the request is transferred to other apache?.
This is something I am not aware of, infact no such need come thru.
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Oct 1, 2008
Any hosting company providing load balancing in from of 2 VM'S on separate nodes?
Look for a low cost solution to run an ATOM server on 2 separate nodes. No need for web sites, control panels, etc.
Just Jetty or apache + atom + postgres.
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May 14, 2007
I have come across a number of hosts who offer Load Balanced hosting. I know that load balancing has something to do with distributing the requests to a cluster of servers. Bu how does it actually work?
What happens if I host my website on load balance hosting provider? Will copies of my website be placed on different servers and the website will be served from the server with the least load?
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Jun 15, 2007
Has anyone any experience of using Load Balanced Clustered VPS servers?
If so who would you rate the best provider?
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Jun 16, 2007
I have set up a HA network.
Web Servers #1 and #2 have their own IPS, but share a dedicated load balanced IP via the H5 Load Balancer.
We have our domain name registered with Yahoo!
How do we point the domain name at Yahoo! to the load balanced IP?
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May 29, 2007
I currently have one server a
Dual Xeon 5130 2GHZ (woodcrest)
2GB Ram.
Running cPanel/WHM
Now I run a website that is VERY PHP & MySQL Intensive and MySQL is ALWAYS the top of the process list, hogging a ton of usage. It's getting to the point where the site is needed a second server and I know there's a few options; but I'm not sure which one would be the best.
They way I see it my two options are getting a 2nd server and setting up the two to do load balancing, or getting a 2nd server and setting one up for just Apache and the Other for MySQL and using the 2nd as a remote SQL server.
If I do the Apache on a seperate server would I need such a powerful server? And if I also would want to upgrade this server along with getting a 2nd server would I be better of upgrading to 4GB of RAM or upgrading the processors?
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May 28, 2008
Is there a way in the php.ini file to force all sessions to be stored in a database? For example, in ColdFusion you can configure sessions to be stored in a db. Can you do this in PHP? Thereby forcing all sessions no matter what the customer specifies to be stored in a db.
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Oct 29, 2007
I utilized xammp to set up a local hosting enviroment on my desktop. It included Apahe, mysql and php. Apparently php support has not been properly installed on my web server.
How do I do that?
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Jul 12, 2007
I'm have installed windows 2003 on a VMware installation as a virutal server. Now it's time to set up my customers home pages but i don't know what way that will be the best. What option do you think is the best?
1. Make a new partion inside the virutal mashine.
2. Install another virutal mashine as a file server and mount efterything from UNC network.
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Aug 15, 2007
Anyony use nginx as web server in shared hosting enviroment? maybe with some custom made control panel's?
How is about its scalability, php performance and so on?
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Jun 21, 2008
if it was possible to load vhosts from a MySQL database and the only solutions i found didnt work for me. Im running Apache on Windows. Has anyone seen anything that would work with Windows? The only alternative i can think of is to read the database info using PHP and output it to a vhosts config file. I dont want to do that though because it means restarting the server to load the new config and i hear that a lot of vhosts slows the server down
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Dec 7, 2008
Don't know if it is some kind of attack or this is normal but the Server load goes reaching 20 in most of the times and may be greater!
this is the mysql_process list
jarabhar_JUHyyuh is opening alot of connections in the same time and this is not the normal behavior ....
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Jul 15, 2009
I want to create a testing environment that is a miniature replication of a full production environment for a web service. From what I understand I'll need three components:
1. A web server
2. PIX firewall
3. DB server
Is there anything else I'll need or anything else I should be mindful of? Looking forward to insight/feedback.
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Aug 16, 2007
I operate vbulletin across my site including a couple of subdomains. I've just moved to a new server only to find that sessions are no longer recorded unless the user actually visits the forum (ie. forum.mysite.com).
The rest of my site uses the following code to track sessions / maintain connection to database:
PHP Code:
// vB Global File$cwdir = getcwd();chdir('/home/mysite/public_html/forum/');require_once 'global.php';chdir($cwdir);
Would anyone know what could be the problem? I'm running vBulletin 3.6.8, PHP 5.2.3, Apache 1.3 and MySQL 4.1.22. Safe mode is off, mod_security is off, open_basedir is off.
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Aug 23, 2007
I recently upgraded to PHP 5.2.3 and now some of my customers sites are throwing errors.
Apache 1 with PHP 5.2.3 on RH.
Code:
Warning: session_start() [function.session-start]: Unknown session.serialize_handler. Failed to decode session object. in /home/kaaoscom/public_html/wow/raids/auth/auth_phpraid.php on line 70
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/kaaoscom/public_html/wow/raids/auth/auth_phpraid.php:70) in /home/kaaoscom/public_html/wow/raids/auth/auth_phpraid.php on line 70
Warning: Unknown: Unknown session.serialize_handler. Failed to encode session object. in Unknown on line 0
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Dec 2, 2007
I'm having some problems configuring my server sessions in php.
Server espec:
WHM 11.2.0 cPanel 11.11.0-S18033
CENTOS Enterprise 4.5 i686 on standard - WHM X v3.1.0
PHP version 5.2.4
MySQL version 4.1.22-standard
Apache version 1.3.39 (Unix)
Sessions def. in php.ini:
Quote:
Code:
[Session]
session.save_handler = "files"
session.save_path = "/tmp/sessions"
; in the case of files, this is the
; path where data files are stored
session.use_cookies = 1
session.name = "PHPSESSID"
; name of the session
; is used as cookie name
session.auto_start = 0
session.cookie_lifetime = 0
; or if 0, until browser is restarted
session.cookie_path = "/ "
session.cookie_domain =
session.serialize_handler = "php "
; php is the standard serializer of PHP
session.gc_probability = 1
; 'garbage collection' process is started
; on every session initialization
session.gc_maxlifetime = 1440
; data will be seen as 'garbage' and
; cleaned up by the gc process
session.referer_check =
; externally stored URLs containing ids
session.entropy_length = 0
session.entropy_file =
; session.entropy_length = 16
; session.entropy_file = /dev/urandom
session.cache_limiter = "nocache "
; determine HTTP caching aspects
session.cache_expire = 180
session.use_trans_sid = 1
; by compiling with --enable-trans-sid
Register globals are ON
First I recieved about 7 e-mails from clients saying that in joomla pre instllation teste sessions.save_path was unwritable.
I went to /temp created a sessions folder and chmoded it to 777
After that they still can't login on the admin area
Error: Warning: session_start() [function.session-start]: Cannot find save handler files in /home/asasdosa/public_html/site00/administrator/index.php on line 111
From what I could read on-line in joomla this means that clients can't save sessions file in the session.save_path although it is writable. But never saw a solution for it, because it was all client oriented. All the solutions were contact your isp.
Well they did contact, but the isp doesn't know how to fix it
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Sep 3, 2008
I've come across an issue where our users are not logging out of their terminal services session properly. Whether via TSWeb or MSTSC (remote desktop), if they close the browser or RDP window using the x it keeps the session alive for upto 1 minute.
The problem with this is that we use terminal services to host an application for users who can't install it, so other users that login (using a generic username and password) are adopting/hijacking the original session and seeing someone elses data.
Does anyone know of a way to force a new session each time a user connects to RDP? Whether via TSWeb or MSTSC (remote desktop)?
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Jun 28, 2007
I have a fairly good understanding of IIS 6.0 and so this is beginning to confuse me some what.
Our clients are running on Windows 2003 server with IIS 6.0 which in turn runs the site that we had created. The thing is our site does rely on sessions so when one ends it runs the Session_OnEnd within the global.asa and runs some other functions.
But just recently a number of our clients are experiencing the problem that the sessions are not ending so the Session_OnEnd is not running therefore causing some major problems with their sites.
Two of our clients has said recently that they had installed SP2 but I am not sure if this would change any of the settings or **cough** BUGS **cough**. Can anyone please shed some light on what the SP2 actually did and if any of the settings for IIS 6.0 would of been reset.
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Jul 27, 2007
While I was using my VPS, I was disconnected 2 times and when I re-connected again, it told me to choose 1 from 2 sessions to continue? Can anyone please tell me how can I create sessions like this and how to delete one of them ?
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Apr 16, 2007
I'm in the process of configuring my company's new server and I've hit a slight stumbling block. What's happening is that PHP is creating its sessions like normal with the exception of no permissions being set for them. This then means that errors are thrown up when PHP attempts to open the session files. Can anybody tell me why this is happening? I have set the sessions directory to octal 0777 for the time being.
The server is running Linux redhat.
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Jan 10, 2009
I was looking at some load balancers hosting companies offer and some of the load balancer specs say they can handle up to 15million concurrent sessions(users online at the same time), so does this mean if i had a site like wikipedia that had 15 million users online at the same time, would i be able to do this with only 2 dedicated servers, or will the Cpu's not be enough?
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Apr 10, 2007
I have a server Windows 2003 Server
I have a problem for ask WHT. I have 3 session in my Windows 2003 Server but we can only 2 person connect but i want 4 or more connection to my server. Hown can i do it?
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Dec 5, 2008
suddendly some of my sites in my server is taking sessions errors...then after a while all its going ok and then again the same problem...the problem still continues.from what might be the problem?a php update?mysql update?any exprerience?
i havent made any change.my server is linux has centos 4.7
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Nov 18, 2014
I implemented a Reverse Proxy using apache2 v. 2.4... What i need to do is limit number of sessions against a Virtual Host. Is that possible?
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Nov 5, 2014
I am trying to capture 3-4 digits when sent as part of a URL, for them to be proxied to another URL. I have no control over how the source sends this data, I am supposed to redirect it. Which works.
#RewriteCond %{HTTP:whoisd-ussd-message} ([d]{2,4})
#RewriteRule ^/original/individual.do(.*)$ https://other.server.com/somewhere/011$1 [P]
The problem is this works for all URLs that have digits to this server. I am expecting to trap URLs that send digits as part of the first call to the server, but this also affects URL calls that are part of other server call transactions, once digits appear, it gets redirected. What can I do to stop this interference?
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Mar 23, 2009
I am planning to get a Juniper firewall, but due to SSG140 has a maximum of 48,000 concurrent sessions per second, so it triggers me how do I measure the concurrent session of a linux server of the total throughput instead of just port 80?
OS: CentOS
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Sep 28, 2009
i hosted one server socket application in my dedicated server which is recving the data from different units(vehicle tracking system) through port no 4444.in dedicated machine i am keeping one active session always...that means my socket application exe is opened always in an active session ie sectionA.This session is not logged off insted i used to close the rdp for keeping this session active.Based on settings if userA accessing SessionA then userB cannot able to reach the active sessionA at the same time instead new sessionB will open for userB.
now my question is
if userB also opened socket application in SessionB with same portno ,then which soket application will recive data from the units...whther the applictaion from sessionA or from SessionB?
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Nov 13, 2008
I'm running a Windows 2003 based Vps, I'm looking to have more than 2 sessions of RDP at one time, I think every people know that is setted to 2.
I want only one more, at the moment I have admin acc always running, #1 friend account (where there are running 2 process always) and now I want #2 friend account for run another process.
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