Session sharing accros subdomains?
I've a main website hosting domain domain.com. There are links on this page that point to response servers, which is a subdomain rs.domain.com. The problem is that when a user signs in on the domain.com and clicks on any link his session is not available on rs.domain.com. I see that this question has been asked an ample number of times on this group. I think I'm clear on the point that this is against the spec / not possible normally. What I want to ask is that whether there is something that can be done either in Tomcat / Apache / my application that will help me in this sharing of sessions. We will be using Tomcat along with Apache (for load balancing) on Linux (FC4). Awaiting responses, -- __ Madhur Kumar Tanwani - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat and MySQL error
I'm not sure if you asked the question at the right place. Anyways, I think there would be some configuration file / code snippet which uses the www.old-domain.com:3306 while forming the connection URL, which is passed to the getConnection(url, username, pass) method. Hope it helps, Madhur. DK wrote: Hello all, I am new to this configuration and working on an exisitng website with MySQL database. There is a change in the domain name / IP address and after the change in IP address I am not able to connect to the database and I get this error when tomcat is started. Caused by: java.sql.SQLException: Cannot connect to MySQL server on www.old-domain.com:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.ConnectException) My MySQL is working fine on port 3306 - I am able to connect to the database from the command prompt I do not know which file I should edit and update with the new IP address / domain name in place of www.old-domain.com, so that tomcat connects to the database with new domain name, when tomcat is started Any help is appreciated ! -- __ Madhur Kumar Tanwani [EMAIL PROTECTED] Ph.: 0253-5614792. __ + A bus station is where a bus stops. A train station + is where train stops. On my desk, I have a work station... + What more can I say ! - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat 5.5 load balancing URL redirefction not transparent to client
Hi, I'm separating this question from my earlier thread on load balancing rules - it seems that it was over-looked there since it did not fit in there :(. My question is that when I use the default balancer webapp from Tomcat 5.5 the redirection rules redirect me to either jakarta, cnn or yahoo's site. However, the redirection is not transparent to the user. for example, Client Types : http://servername:8080/balancer/ Balancer Redirects To: http://jakarta.apache.org *The browser URL changes to : http://jakarta.apache.org* I think this change of URL does not make the transition transparent. Also, the subsequent requests bypass the load balancer(LB) and are directly served by the server (so what happens if the server is down - the LB has support for fail over but the request never went via the LB) Please could someone throw some light on the same? Awaiting responses, -- Madhur Kumar Tanwani - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat 5.5 load balancing URL redirefction not transparent to client
Thanks Filip. I understand now that Tomcat performs redirection - which implies that the URL must change. Then, I suppose I must ask - Is something like mod_proxy available in Tomcat? - Is it possible to emulate the same behavior in Tomcat? After my discussion on the Tomcat 5.5 load balancing thread and this one, I'm thinking of a setup like request | V Apache 2.0 httpd Webserver (LB with sticky sessions, weighted round robin, mod_jk2) | | Tomcat Worker 1 (ajp13) | Tomcat Worker 2 (ajp13) | Tomcat Worker 3 (ajp13) The session management will be done using either JDBCStore or in-memory replication amongst the Tomcat servers. Can you suggest something in the design that is wither wrong or can be improved? Is there something that the LB gurus find obviously wrong here and would want to tell me (or would you want me to encounter it as it comes :) )? Awaiting your valuable comments, Madhur. Filip Hanik - Dev Lists wrote: redirection, as the name tells you, doesn't balance, it redirects, and there is nothing transparent about a redirection. what you are looking for is called proxying, and the best example for that, would be mod_proxy in the Apache httpd web server. Filip Madhur K Tanwani wrote: Hi, I'm separating this question from my earlier thread on load balancing rules - it seems that it was over-looked there since it did not fit in there :(. My question is that when I use the default balancer webapp from Tomcat 5.5 the redirection rules redirect me to either jakarta, cnn or yahoo's site. However, the redirection is not transparent to the user. for example, Client Types : http://servername:8080/balancer/ Balancer Redirects To: http://jakarta.apache.org *The browser URL changes to : http://jakarta.apache.org* I think this change of URL does not make the transition transparent. Also, the subsequent requests bypass the load balancer(LB) and are directly served by the server (so what happens if the server is down - the LB has support for fail over but the request never went via the LB) Please could someone throw some light on the same? Awaiting responses, - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- __ Madhur Kumar Tanwani [EMAIL PROTECTED] Ph.: 0253-5614792. __ + A bus station is where a bus stops. A train station + is where train stops. On my desk, I have a work station... + What more can I say ! - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat 5.5 Load Balancing Rule Classes
Hi, Greetings to all in my first mail on the list. I've read the article on How To Ask Questions The Smart Way - will try to adhere to it, but please don't mind a few misses :). First with some background. This request is regarding the classes that implements the rules, as used in the rules.xml file in the balancer webapp that ships with Tomcat 5.5. I'm configuring a Tomcat setup with one load balancer and 3 workers in one cluster. The setup details are : OS : Linux (2.6.11-1.1369_FC4) Tomcat : 5.5 (all) JDK : 1.5 I've being studying through the configuration references from :- - the Tomcat load balancing HOW-To - http://tomcat.apache.org/tomcat-5.5-doc/printer/balancer-howto.html - the Tomcat clustering HOW-To - http://tomcat.apache.org/tomcat-5.5-doc/printer/cluster-howto.html - an article on OnJava.com - http://www.onjava.com/pub/a/onjava/2004/04/14/clustering.html (for Tomcat 5) However, what I find is that Tomcat 5.5 by defaults supports basic Rule Classes like AcceptEverythingRule, URLStringMatchRule etc. I am trying to build a load balancer which enforces the following :- - chooses from the available alive workers from the cluster, in a Round-Robin / Least-Load-First manner - implements session affinity - includes fail over support with session replication, so there is no loss of session data - The transition is transparent to the user. Hence, whatever be the redirectURL, the URL in the browser should not change As you might expect, the problem is that, this kind of behavior is not available with the the standard Tomcat installation. Also, is the transparent transition possible? I read in the load balancer HOW-To that this list is the best place to inquire for latest Rule classes and details. I've also browsed through the archives, till April 2006 (it was then that I realized that a search feature there would greatly help!), but did not get this answer. I also realize that I can implement the org.apache.webapp.balancer.Rule interface to generate Rules that I want (in fact that is what the article on OnJava has provided). But what I was inquisitive about was whether such standard Rule classes have been implemented? Are there any pointers to such resources? On another note, I wanted to ask the clustering and load-balancing gurus, whether I've taken up the correct approach. I see that many load balancing tutorials focus on Apache as the load balancer with Tomcat as the worker in clusters. But since most of them are old, I assume the new Tomcat 5.5 features did not make it then - hence the question. Please could anyone on the list, help me with these problems? Any pointers to resources would be a great help. In case there is anything else that must have mentioned that would ease thinking on the problem, do ask me for it. Thanks a lot, -- __ Madhur Kumar Tanwani - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
