Monday Oct 08, 2007

Clustering in GlassFish Version 2 (article)

Take a look at the article written by Kedar, Myself and Rick which talks about Clustering in GlassFish V2. This article talks about Clustering in GlassFish, Failover with in-memory session state replication (new feature in GlassFish V2), Domain Administration Architecture, Group Management Service and Load Balancer Plug-in. This article will help you to get started with deploying your applications to a GlassFish cluster.[Read More]

Thursday Oct 04, 2007

Installation of Load Balancer Plugin with N1 Service Provisioning System

The Application Server Plugin allows you to install, install (markOnly), uninstall and uninstall (markOnly) the Load Balancer Plugin for Sun Java System Web Server 6.1 and 7.0 versions. You can also view the list of LB Plugin Installations. Here we will take a look on how to use the N1SPS Application Server Plugin to Install and Uninstall the Load Balancer Plugin. [Read More]

Wednesday Sep 12, 2007

Setting up Load Balancing and Highly Available Cluster in GlassFish V2

You must have seen many blogs talking about the different parts of configuring a load balancer that will work with GlassFish V2. This blog is an effort to put that content together to create a scenario which you can try and which will work. This document covers the various options in terms of replication and load-balancing using either software (web servers) or hardware solutions. It also touches more advanced topics such as establishing a secure connection between the DAS (Domain Admin Server) and the web server.[Read More]

Saturday May 19, 2007

Load balancing for Glassfish V2 deployments using BIG-IP System

There was some interest from people visiting glassfish booth at this years Javaone, on how to use F5 Networks BIG-IP system with Glassfish. This blog explains on how to do this.[Read More]

Wednesday May 02, 2007

LoadBalancer administration for GlassFish

LoadBalancer administration for GlassFish GlassFish V2 Beta, the next major version of the open-source Java EE 5 application server, provides enterprise features such as clustering, administration, Web Services Interoperability Technology (WSIT), NetBeans IDE integration, native SOA support through Java Business Integration (JBI), and load balancing to support highly scalable, volume enterprise deployments for service-oriented architecture (SOA) and Web 2.0 applications.


With the experience of working on Load balancer administration of glassfish, I can say the glassfish has Best in Class Load balancer administration. Reasons being

  • Enhanced GUI capability and CLI commands to administer the LB configuration (Easy to use with a single command and single GUI page).
  • Configuration changes can be pushed from DAS (Glassfish's Domain Administration Server) to Load Balancer automatically (pushed when events like deploy/undeploy/create/ delete-instance etc., occur). This can be achieved by setting up a SSL connection between DAS and load balancer. This will avoid the manual copying of loadbalancer.xml to the WebServer location.
  • The monitoring data about load balancer can also be obtained, once SSL is setup (Currently we support this with AMX interface, the next release will have CLI and Admin Console support). More about this at Satish's Blog
  • Support for Rolling Upgrade.
  • Enhanced the LB configuration on glassfish to support LB policy (round robin, weighted and user defined) and configuration of weights for the glassfish Instances.
Also see the article by me on 'Setting Up F5 Networks' BIG-IP System With Sun Java System Application Server'. Expect to see a similar one for glassfish (shouldn't be much different, If you want to give it a try yourself).
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