actually, the answer is no, even if you enable multicast over WAN, you
are dealing with some serious security issues, cause the the
transmission of the data is not encrypted and you are facing a serious
liability.
For TC6 we have separated out the comm protocol from the replication
logic, and WAN replication is one of the features on the list, doing
this over SSL if you are not on a private network.
So we are little away from making this happen, but it is on the radar.
Filip
Peter Rossbach wrote:
Yes and no!
Speak with your network admin that the multicast send to other global
machine. Not working over normal internet ways!
I thing clustering is made for local network failover. What you need
are cluster domains. Gropus of clusters with a separate loadbalancer
to route request over you country boundaries. That works fine :-)
Peter
Am 17.03.2006 um 00:02 schrieb Larry Mulcahy:
My question is:
Is it reasonable to expect Tomcat clustering to work for servers not
in the
same network? Widely separated in different states?
I have read the docs but don't understand the whole multicast thing.
I have set up two servers with clustering enabled on the same subnet
and they
see each other, no problem. Then I tried to add another server on a
different
subnet, no dice. I am experimenting with some configuration settings
like the
multicast address but would like to hear from someone who knows 'yes
this can be
done' before I invest too much more time.
--Larry Mulcahy
Good system software should be free, like air
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