| [cosmos-dev] FW: 216387 - Broker and domain on different machines |
|
Adding the dev list. Thanks, Jimmy Mohsin Cell +1-609-635-1703 From: Devine, John T I’m
definitely not concerned about this for i8. In the longer run
since we allow multiple brokers it would make sense to support having them on
multiple machines since some of the reasons for having multiple brokers
(redundancy, load distribution) are more useful with separate pieces of
hardware. Jack From: Mohsin, Jimmy Bill, OK … so my questions
stand…. Team, Any comments?? Is this even a
viable test? If yes, how does the client determine which instance of the Domain
/ Broker to use? Thanks, Jimmy Mohsin Cell +1-609-635-1703 From: Muldoon, William H Jimmy
I stand corrected; the domain and broker are packaged together. So as you
stated, there are two sets of domain-broker pairs, one on each machine. Regards Bill From: Muldoon, William H Jimmy
My interpretation of the setup is that Shivy deployed a single domain in tomcat
on machine 1 and a single broker in tomcat on machine 2. We can confirm this
configuration when she sends the registry (or just ask her). The client can be deployed anywhere but it only knows the EPR of
the domain on machine 1. Regards Bill From: Mohsin, Jimmy Bill, OK cool.. I guess I learnt
something new… In this case, if we have multiple instances of COSMOS
running EACH having the Domain / Broker, what do we do to ensure that only ONE
Domain functions and only ONE Broker function? Additionally, in this scenario, who
manages the EPRs? The client? And since we have multiple EPRs for a
single component (e.g. we have multiple Brokers), how does the client know
which EPR to use? Thanks, Jimmy Mohsin Cell +1-609-635-1703 From: Muldoon, William H Jimmy
Yes I think it’s valid because any COSMOS component (domain, broker, data
managers, UI) may be deployed on any node in the network. The domain knows the
EPR of the broker because Shivy specified the domain EPR in step 3: 3. client app on machine 2; broker register command executed with domain EPRreflecting machine 1; Broker registered successfully message displayed Regards Bill From: Mohsin, Jimmy Gents, I have a FUNDAMENTAL question about this defect… Is
this even a valid deployment of COSMOS? If I understand Shivvy right, she
was running TWO different instances of COSMOS… In that case, HOW would
instance #1 Management Domain even know about the instance #2 Broker? Or
do we have some sort of an overarching EPR management or registration that can
cross instances???? Thanks, Jimmy
Mohsin Cell +1-609-635-1703 |