So, wouldn't the answer really be Yes it will work (technically it is feasible), with several caveats, namely, multicast is typically not enabled on WANs, and the transmission protocol for replication is not secure. It boils down to a network problem - and if you had a secure VPN over WAN which would carry multicast, it work be technically feasible and as secure as your VPN.
? Tim -----Original Message----- From: Filip Hanik - Dev Lists [mailto:[EMAIL PROTECTED] Sent: Friday, March 17, 2006 8:16 AM To: Tomcat Users List Subject: Re: Tomcat clustering 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 >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
