quality@glassfish.java.net

Re: [Question]: I have 3 questions about http load balance of GlassFish V2

From: Sudhir Prabhu <Sudhir.Prabhu_at_Sun.COM>
Date: Mon, 22 Dec 2008 21:23:53 +0530

Jamy,

Can you explain how are you verifying the session failover? Also the
domain.xml will be helpful

Thanks
Sudhir

Jamy Wang wrote:
> Hi Sudhir ,
>
> The loadbalancer.xml is in the attachment. And I never configure the
> domain.xml....
>
> 2008/12/22 Sudhir Prabhu <Sudhir.Prabhu_at_sun.com
> <mailto:Sudhir.Prabhu_at_sun.com>>
>
> Jamy,
>
> Can you also explain how exactly are you trying the session
> failover? Also if you can attach the loadbalancer.xml and
> domain.xml it will help us take a look at the issue.
>
> Thanks
> Sudhir
>
>
> Judy Tang wrote:
>
> Hi Wolfram,
>
> Thanks so much for giving 3 different ways to config the
> contextroot. Let's double check
> to see which of our doc provides all the ways to set contextroot.
> [1] GlassFish v3 Prelude doc:
> http://docs.sun.com/app/docs/coll/1343.7
> [2] GlassFish v2 doc:
> http://docs.sun.com/app/docs/coll/1343.5?l=en
>
> Hi Jamy, For your second question, "session fail-over, but I
> found sometimes it works, and sometimes doesn't work",
> when it does not work, what did you observed, any diagnose
> information would be helpful.
>
> Thanks,
> Judy
> Wolfram Rittmeyer wrote:
>
> Jamy Wang wrote:
>
> HI Kshitiz ,
> Thank you so much! I had found the way to create a
> http listener and dispatch to the cluster in
> GlassFish. But I still have 2 questions:
> 1) I still don't know how to configure a web app as a
> root context, such as accessed by http://hostname
> <http://hostname/> <http://hostname/>, I guess
> somewhere in the configuration of web server. Could
> you tell me?
>
>
>
> There are different ways to achieve this. First you can
> specify a "/" as context-root at deployment time:
>
> asadmin deploy --contextroot / --name whatEver
> /path/to/whatEver.war
>
>
> Another approach (probably the better one) is to use
> sun-web.xml (in the WEB-INF directory):
>
> <sun-web-app>
> <context-root>/</context-root>
> </sun-web-app>
>
> --
> Wolfram Rittmeyer
>
> 2) I am going to test the session fail-over, but I
> found sometimes it works, and sometimes doesn't work.
> Why? Has something to do with heartbreak of the
> cluster? I'm not sure. Has anyone got that problem?
> Thanks again.
> Best Regards
> Jamy Wang
>
> 2008/12/19 Kshitiz Saxena <Kshitiz.Saxena_at_sun.com
> <mailto:Kshitiz.Saxena_at_sun.com>
> <mailto:Kshitiz.Saxena_at_sun.com
> <mailto:Kshitiz.Saxena_at_sun.com>>>
>
> Hi Jamy,
>
> Please see my comments inline.
>
> Thanks,
> Kshitiz
>
>
> Jamy Wang wrote:
>
> Hi everyone,
> I'm Jamy Wang in China. I just started
> learning how to use
> GlassFish recnetly. I got some questions while
> configuring SUN
> web server v7 and GlassFish v2 to work together.
> 1) I just can not find http listner port in
> "server.xml", only
> see https listen port 8989 and it works.But can
> not access by
> HTTP. Did I miss something? I just installed
> the web server
> normally...
>
>
> You are looking at admin server of web-server
> installation. Please
> create another instance using admin console to act
> as front-end for
> glassfish.
>
>
> 2) I saw a function in the console of
> GlassFish v2 " HTTP load
> balance" , I don't understand how it will be
> used, It seems I
> will never use it? It must be some meaningful
> things I missed.
>
>
> This is needed to configure loadbalancer xml. There
> are two ways of
> doing that
> 1. Export loadbalancer xml and copy it to
> web-server machine
> 2. Configure the web-server port etc such that
> changes to
> load-balancer xml is pushed to web-server directly.
>
> For both of above option, you need to create http
> load-balancer in
> glassfish.
>
> Please follows steps available @
>
> http://docs.sun.com/app/docs/doc/819-3679/gchvt?l=en&a=view
> <http://docs.sun.com/app/docs/doc/819-3679/gchvt?l=en&a=view>
>
> <http://docs.sun.com/app/docs/doc/819-3679/gchvt?l=en&a=view
> <http://docs.sun.com/app/docs/doc/819-3679/gchvt?l=en&a=view>>
> to
> correctly configure web-server.
>
>
> 3) How can I monitor the flow of each instance
> in the cluster?
>
>
> loadbalancer xml had attribute, namely
> require-monitor-data, if set
> to true it will print monitoring data. In general
> it should be set
> to false.
>
>
> Anyone's help or reply will be very appreciated.
> Thanks a lot.
> Best Regards
> Jamy Wang
>
>
>
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