Re: Load balancing ????
Hallo Mahesh, find here more about clustering with orion: http://kb.atlassian.com/content/orion/docs/http-clustering.html Friday, February 01, 2002, 3:31:04 PM, you wrote: MMK Dear Sir, MMK Currently Iam working in a project which is using Orion server.This is for the first time Iam using this server.Can you please tell me how to do load balancing in Orion?Is load balancing MMK possible in Orion? MMK Waiting for your reply.. MMK regds MMK Mahesh K MMK ~~~ MMK Mahesh M Kagalkar MMK Ionidea Enterprise Solutions pvt ltd. MMK 38-40, Export Promotion MMK IndustrialPark, Whitefield, MMK Bangalore-560 066 MMK Voice : 8411366-71 MMK Fax : 8411391 MMK E-mail : [EMAIL PROTECTED] MMK [EMAIL PROTECTED] MMK [EMAIL PROTECTED] MMK ~~~ Mit freundlichen Grüßen, Robert Virkus Director Mobile Solutions -- Robert Virkus scaraboo GmbH mobile Entertainment Georg-Wulf-Str.4-6 28199 Bremen Germany phone +49 - (0)421 - 59 67 549 fax+49 - (0)421 - 59 67 567 mobile +49 - (0)171 - 35 31 635 [EMAIL PROTECTED] www.scaraboo.de wap.scaraboo.de Aus Rechts- und Sicherheitsgruenden ist die in dieser E-Mail gegebene Information nicht rechtsverbindlich. Eine rechtsverbindliche Bestaetigung reichen wir Ihnen gerne auf Anforderung in schriftlicher Form nach. Beachten Sie bitte, dass jede Form der unautorisierten Nutzung, Veroeffentlichung, Vervielfaeltigung oder Weitergabe des Inhalts dieser E-Mail nicht gestattet ist. Diese Nachricht ist ausschliesslich fuer den bezeichneten Adressaten oder dessen Vertreter bestimmt. Sollten Sie nicht der vorgesehene Adressat dieser E-Mail oder dessen Vertreter sein, so bitten wir Sie, sich mit dem Absender der E-Mail in Verbindung zu setzen. For legal and security reasons the information provided in this e-mail is not legally binding. Upon request we would be pleased to provide you with a legally binding confirmation in written form. Any form of unauthorised use, publication, reproduction, copying or disclosure of the content of this e-mail is not permitted. This message is exclusively for the person addressed or their representative. If you are not the intended recipient of this message and its contents, please notify the sender immediately.
Re: Load balancing ????
hello yes it is possible to do the load balancing in orion i am attching one html file just go through if. In case u want more help just reply me. bye sachin - Original Message - From: Mahesh M Kagalkar To: Orion-Interest Sent: Friday, February 01, 2002 8:01 PM Subject: Load balancing Dear Sir, Currently Iam working in a project which is using Orion server.This is for the first time Iam using this server.Can you please tell me how to do load balancing in Orion?Is load balancing possible in Orion? Waiting for your reply.. regds Mahesh K ~~~Mahesh M KagalkarIonidea Enterprise Solutions pvt ltd.38-40, Export PromotionIndustrialPark, Whitefield,Bangalore-560 066Voice : 8411366-71Fax : 8411391E-mail : [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED]~~~ Title: Orion HTTP Clustering Orion HTTP Clustering and Load Distribution $Revision: 1.0 $ This document will show you how to set up HTTP Clustering and Load Distribution using the Orion application server. Note: This article assumes that you are familiar with how to use Orion. Introduction Before you start, make sure you have downloaded and installed the following software on at least 2 servers: Java Development Kit (1.2 or later) Orion (1.3.5 or later) You also need a network with operational multicast facilities. If you don't have access to 2 servers but want to test this, you can install 2 Orions on the same box and make sure that they are not using the same ports for the RMI server and for the HTTP server. This article has the following sections: Introduction Introduction to clustering State replication Cluster islands Load distribution Setting up a load distributed cluster with Orion Step 1: Install your web-application on all the Orions in your cluster Step 2: Set up your web-application to replicate its state Step 3: Configure your cluster islands Step 4: Tell the back-ends about the load balancer Step 5: Starting and using the load balancer Step 6: Start the back-ends Step 7: Test it To do If you already know about clustering and load distribution in general and just want to know the steps to set it up for Orion, you may skip to Setting up a load distributed cluster with Orion. Introduction to clustering For at least two reasons you often want your web site to be served by more than one web server: Fault tolerance Handling larger loads than one server can survive The act of letting two individual servers work together to perform one task is often referred to as clustering. Clustering is an essential piece to solving the needs for today's large websites. State replication Originally, HTTP was designed as a stateless protocol. Every request had all the info the server needed to perform a certain task. Doing clustering for a stateless system is trivial and only requires that a request can be handled by more than one server that share the same document hierarchy. In today's world, the picture is not as simple. The need for user sessions with data stored on the server about a specific website user resulted in the invention of the HTTP cookie. A cookie is a way for a web server to store data in the web browser. This cookie is passed back to the server on later requests. This is often used to associate some data on the server (state) with a specific user. A typical example is that of a webshop shopping cart. The user adds the goods he wish to purchase to the cart and the server associates the user's cookie with a certain cart stored on the server. As you might have guessed this means that clustering gets somewhat more complex. It is no longer enough that the document hierarchy is shared between the web servers, but now the state stored on a server will mean that requests sent to different servers will result in different results. Somehow we need to solve that. There are two obvious solutions to the problem: When a web site user has any state on the server associated with him, make sure that he always get directed to the server which holds his state. If the server can no longer respond, for any reason, let him log in again to a new server. Replicate all state on a server to at least one other server. Make sure the user gets send to a server that holds his state. If his original
RE: Load balancing advice needed
Guess what you what is more of an -un-clustering excercise :-) When specifying your params for your InitialContext you have to set the PROVIDER_URL. That specifies a host path. e.g. ... properties.put(Context.PROVIDER_URL, ormi://your-bean-server/your-application/); ... jndiContext = new InitialContext(properties); Or alternatively: something like that in your jndi.properties file. FE On Friday, May 18, 2001 12:17 PM, Joni Suominen [SMTP:[EMAIL PROTECTED]] wrote: Hi! I am currently planning the new production environment for our service. The idea is to have following harware setup: 1 firewall (which used for loadbalancing too) 2 Linux/Intel boxes as frontend servers (both running HTTP accelerators and web containers) 1 UNIX server as a backend server (running an EJB container and databases) I went through load balancing documentation which I found from orionserver.com but I didn't find any way to separate Orion's web container and EJB container to achieve the above setup. Is it somehow possible to do that kind of separation? How would you distribute the required processes on those three servers? -- Joni [EMAIL PROTECTED]
Re: load balancing
found it. someone else was using clustering also and we weren't specifying minimumIsland and maximumIsland when launching loadbalancer, i.e.each of our loadbalancers were seeing each others servers. - Original Message - From: Greg Matthews To: Orion-Interest Sent: Monday, February 26, 2001 12:52 PM Subject: load balancing dear all, i've had a go at setting up load balancing and it's half working. i don't know what's registering with the load balancer for the first servermentioned in the message below. the second server mentioned is the one i configured. anyone have a rough guess about what i might have done to cause the first server to be appearing. when i open pages on the site, the load balancer finds 127.0.0.1 invalid, then removes it from the cluster, but then about 5 seconds later it re-adds it back in. F:\orionjava -jar -debug loadbalancer.jar Balancer initialized...Added island number 1 to the cluster...Discovered server 127.0.0.1/127.0.0.1:8081... = where's this coming from?Discovered server PIII-450/57.226.58.6:8080... = this is ok. from default-web-site.xml web-site cluster-island="1" host="57.226.58.6" port="8080" display-name="Default Orion WebSite" frontend host="57.226.58.6" port="80"/ web-app application="demo" name="person-web" root="/person" load-on-startup="true"/ !-- etc, etc, -- /web-site
RE: Load balancing with Orion
The only thing I can think of...did you specify the WELCOM file of index.jsp? Otherwise it defaults to index.html I think. That should be in your web.xml file. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of [EMAIL PROTECTED] Sent: Monday, December 11, 2000 7:46 PM To: Orion-Interest Subject: Load balancing with Orion Guys, i have a problem, i'm tryin to use Orion as Load Balancer here is my load-balancer.xml file which is located in $ORION_HOME/config/ ?xml version="1.0"? !DOCTYPE data-sources PUBLIC "Orion load-balancer" "http://www.orionserver.com/dtds/load-balancer.dtd" load-balancer host="[ALL]" port="80" secure="false" selection-type="random" user-ip="true" use-session-id="true" island id="0" backend-server host="192.168.1.139" port="80"/ /island island id="1" backend-server host="192.168.1.138" port="80"/ /island /load-balancer So basicly what im trying to do is balance traffic between those 2 servers. But for some reason when i request "localhost" it displays me a page that is "website/index.html". I wonder why is that happenin. Any help is deeply appreciated Thank You -Anton
Re: load-balancing limitations?
same limitations as for persistent sessions. to replicate session state orion has to be send it over the wire, i.e. serialize it. for homes and ejbobjects that's automtically taken care of by orion. for the other stuff you have to make everything you put into a session serializable. HTH robert At 16:06 09.10.00 , you wrote: Hello, i just set up load-balancing as described in the documentation. i testet with "default-web-app" and some servlets and it seems to work fine. then i tried my struts-based application and i got following exception: ---snipp- java.lang.IllegalArgumentException: Only java.io.Serializable, javax.ejb.EJBObject and javax.ejb.EJBHome instances can be bound to a session in a distributable web-application at com.evermind.server.http.ClusteredHttpSession.setAttribute(JAX) at com.evermind.server.http.EvermindHttpSession.putValue(JAX) at com.evermind.server.http.EvermindPageContext.setAttribute(JAX) - at org.apache.struts.taglib.FormTag.doStartTag(FormTag.java:510) - at /logon.jsp._jspService(/logon.jsp.java:73) (JSP page line 27) at com.orionserver.http.OrionHttpJspPage.service(JAX) at com.evermind.server.http.HttpApplication.xa(JAX) at com.evermind.server.http.JSPServlet.service(JAX) at com.evermind.server.http.d3.so(JAX) at com.evermind.server.http.d3.sm(JAX) at com.evermind.server.http.ef.su(JAX) at com.evermind.server.http.ef.dn(JAX) at com.evermind.util.f.run(JAX) ---snipp- FormTag.java:510 pageContext.setAttribute(name, bean, scope); ---snipp- whats the problem? thanks a lot klaus -- Klaus Thiele - Personal Informatik AG mailto:[EMAIL PROTECTED] "There's got to be more to life than compile-and-go." (-) Robert Krüger (-) SIGNAL 7 Gesellschaft für Informationstechnologie mbH (-) Brüder-Knauß-Str. 79 - 64285 Darmstadt, (-) Tel: 06151 665401, Fax: 06151 665373 (-) [EMAIL PROTECTED], www.signal7.de
