Hi,
Thank you for helping me out on this, much appreciated.
How likely is it to get GMS/Glassfish V2.1 to work on a VLAN based
network without multicast (but broadcast or some other mechanism)?
I noticed that running under a security manager is also not supported
for V3, which is a feature I do need so for now I'll stick with the
production tested V2 with the exception of some standalone nodes
perhaps. I can also help with the testing of V3 Clustering if we get
the right setup into images (provisioning a bunch of servers takes
less than an hour and then they are ready for testing)
Glassfish V2 only works with multicasting?
Regards,
Barry
On Mon, Jun 15, 2009 at 18:31, Shreedhar
Ganapathy<Shreedhar.Ganapathy_at_sun.com> wrote:
> We have not started any work wrt cluster and session state replication in
> the v3 workspace.
> I believe though that you can front separate v3 instances with Apache mod_jk
> with sticky loadbalancing but that would be without session state
> availability.
> We plan to get to it as soon as we are done with Sailfin v2.
>
> Barry van Someren wrote:
>
> Hi,
>
> Ah, as far as I know there is no support for Multicast where I am
> right now, except maybe for the IPv6 part.
> I'll have to do some digging.
> What level of Clustering is currently supported in V3 (I read that it
> works with mod_jk, does that mean http session clustering? What about
> EJB/RMI clustering?)
>
> I don't "need" all the features from the V2 clustering (I could use
> plain weighted HTTP/sticky loadbalancing, provision the nodes using
> scripts.. etc) but I would like the cluster to be able to share HTTP
> state and perhaps also EJB/RMI clustering.
>
> Regards,
>
> Barry
>
>
> On Mon, Jun 15, 2009 at 16:49, Shreedhar
> Ganapathy<Shreedhar.Ganapathy_at_sun.com> wrote:
>
>
> Hi Barry
> Nice thread. :)
> One issue with cloud environments is that they do not support multicast
> traffic. And GF v2 relies on Shoal GMS's autodiscovery mechanism for
> discovering cluster members whic relies on multicast support as of v2
> release. We have added non-multicast discovery but that has not be tested
> for production use yet. So that may be one of the issues with using v2 on
> cloud env especially when using clustering and replication.
>
> v3.1 is slated for next year around May or so.
>
> --Shreedhar
>
> Barry van Someren wrote:
>
>
> All,
>
> I've been using Glassfish for a few years now and am a strong believer
> in it's capabilities and stability along with Sun Web server 7.
> My experiences have mostly been with single server setups.
> Lately I've been working on setting up Java based hosting and I'm
> looking for some opinions.
> My hosting setup is based on a combination of Cloud Nodes (much like
> EC2 only with both monthly and hourly options) and physical hardware
> (for MySQL databases, since running these of a shared SAN is a bad
> idea)
> I was thinking that Glassfish is moving more and more into the
> direction of being an excellent cloud based hosting environment.
> (support for clustering out of the box, excellent management)
> Not just for Java, but also for PHP and Ruby.
>
> I'm wondering though, what pitfalls should I think about?
> -What about security? Is setting a good security policy and separating
> the threadpools enough?
> -Performance and isolation? (I vaguely remember Glassfish V3/Grizzly
> having more control over priority of requests for QOS)
>
> One thing that has me torn right now is that Glassfish V2 comes with
> excellent clustering/management support that will perfectly fit the
> bill.
> V3 on the other hand has more hosting options and has a great modular
> infrastructure which I'll probably build plugins for.
> I know V3.1 will be even greater, but should I wait for it? How long will
> it be?
> Is there a way that I can help out to get the clustering support into
> V3 quicker?
>
> Regards,
>
> Barry
>
>
>
>
>
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>
>
>
--
Barry van Someren
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