Thanks for answering Shreedhar quickly
That is very kind of you.
1. OK for the loadbalancer.h file. So by default there is a real loadbalancing, I would like to be sure.
2. Thanks for helping by cc ing the community ! I keep this address in mind ;-)
3. I am pretty sure to have followed all the steps that is the reason why I was asking but I am gonna double check again
Many thanks.
Thomas CATTY
06.75.67.24.71
On Nov 8, 2012, at 8:00 PM, Shreedhar Ganapathy <shreedhar.ganapathy_at_oracle.com> wrote:
> 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:
>> 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 ?
>> (I’ve 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
>>
>> “There are three ways to get something done; do it yourself, hire someone,
>> or forbid your kids to do it.” (Mona Crane)
>