Hi Shreedhar,
Hope you¹re doing well
I wish the best for 2013.
I am taking the liberty of asking you if you had (or your team) an idea for
the second issue (below) I was coping (about 2 LB)
It would be gorgeous.
take care
cheers
Le 08/11/12 20:00, « Shreedhar Ganapathy » <shreedhar.ganapathy_at_oracle.com>
a écrit :
> Hi Thomas
> Thanks for reaching out.
> I have put in some responses below. Hope these are helpful.
>
>
> On 11/8/12 2:47 AM, Thomas CATTY wrote:
>
>
>> Glassfish 3.1.2 and loadbalancer iPlanet webserver Hi Shreedhar,
>> Thanks for your brilliant topics about Glassfish, cluster and other things !
>>
>> I've been using Webserver iPlanet 7 as a loadbalancing with Glassfish 3.1.2.
>> It works fine. thanks again for all the clear docs or videos I found on the
>> topic.
>> I've 3 questions :
>>
>> 1. It is said to be used as a loadbalancer but what I notice is that all the
>> shown examples deal with sessions failover, ie when e instance in a cluster
>> fails, another one is automatically the relay. Great.
>> But what about the real load balance ? what happens when there is a real
>> load, is it taken into account without any more configurations ?
>>
>
> The default algorithm used by the LB Plugin is round robin. One can write
> one's own algorithm by modifying the loadbalancer.h file.
>
>
>>
>> 2. In production, I'll have 2 servers with 128Go RAM exach, 2To
>> storage...They will be virtualized.
>> For example, on the first, I'll have a VM with iPlanet server 7 acting as
>> a loadbalancer, on a second VM, my application server Glassfish, on a third
>> my sql Cluster...
>> And what I would like to do is : on the second server where there will
>> also be a glassfish (for a cluster with the first one), some sql nodes...I
>> would like a second iPlanet server LB doing the same like the first one
>> but as a slave if the first one fails ? is is possible to do that with a
>> sort of "hearbeat" link between them ? it would be great !
>>
> I believe it is possible to do so - but am not sure of the steps involved. I
> have cc'd our GlassFish users list so someone from LB team can comment.
> Moreover, this discussion will be useful for other community members .
>
>
>>
>> 3. when everything is OK in my Glassfish and iPlanet webserver
>> configuration, i even cope with this little problem : when I deploy or
>> redeploy a high available application in my cluster linked to the
>> loadbalancer, I've noticed (by chance! 'cause it didn't work) that I had to
>> "manually" apply the changes in the loadbalancer.xml file on iPlanet :
>> "manually" means that the "apply-http-lb-changes" seems to work from my
>> asadmin console but on the iPlanet I have a message telling me that the
>> configuration has changed and if I want to apply or not... without that
>> manual confirmation it wouldn't work.
>> Hope it was clear ;-) So how can I avoid that ? any parameter to turn on ?
>> (I¹ve yet a well configured SSL connection between them )
>>
>
> Could you look into the HA Admin Guide - it should have all the details on
> configuring the GF Domain Server and IPlanet Web Server to auto apply LB
> config changes.
> http://docs.oracle.com/cd/E18930_01/html/821-2426/geobp.html#gktmr
>
> hth
> Shreedhar
>
>
>>
>> Thanks in advance for all !
>>
>> --
>> Thomas CATTY
>> 06.75.67.24.71
>>
>> ³There are three ways to get something done; do it yourself, hire someone,
>> or forbid your kids to do it.² (Mona Crane)
>>
>>
>
>
--
Thomas CATTY
06.75.67.24.71
³There are three ways to get something done; do it yourself, hire someone,
or forbid your kids to do it.² (Mona Crane)