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| Cluster Challenge |
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| nyey |
 Posted: Sun Aug 10, 2003 5:12 pm Post subject: Cluster Challenge |
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Acolyte
Joined: 13 Mar 2003
Posts: 57
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All:
I will have 4 machines & each has 1 Q mgrs. Two machines for a pair and 2 pairs form an active-active failover scenario.
I need them to
1. all 4 of them can work together
2. due to a special need, I need them to be in 2 separate clusters so that I can work with each of them individually.
3. The switching from 4 Qmgr cluster to 2 two Q mgr clusters or combining two clusters into one cluster can be done without shutting down the Q mgrs.
With this reqs, I have come up with this design: 3 clusters.
Two machine for clsuter A, the other 2 form cluster B. Both cluster then form cluster C.
When I neded I can 'turn on/off' cluster C to acomplish myswitching.
Questinos are:
1. Is this the best design?
2. How to implement this design?
Thanks for your input in advance.
Nyey |
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| EddieA |
| Posted: Sun Aug 10, 2003 5:55 pm Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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There is no concept of 'turn on/off' cluster.
When defining a Local Queue (and other objects) you say which cluster(s) they belong to. Unless by turning on/off a cluster you are going to change all the Queue (and other object) definitions to change their Cluster dependencies.
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| dsim |
| Posted: Tue Aug 12, 2003 1:29 pm Post subject: |
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Acolyte
Joined: 11 Aug 2003
Posts: 67
Location: Toronto
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Nyey,
First, it's hard to label a design 'the best' (see: well..., not bad, it's ok, pretty good and so on)
Second, from what you named reqs 1, 2 and 3 it is not clear what you are trying to achieve.
Then, supposing you have an application that should be able to put a message either to one of the specific four queues (each belonging to one of the four queue managers), or to any cluster queue in cluster A, B or to any cluster queue in cluster C, one way to accomplish this is:
- supposing the queue manager names are QM1, QM2 (belonging to clusters A and C) and QM3, QM4 (belonging to clusters B and C);
- supposing in each qm there is a local queue named Q
- in each qm you create aliases for Q as following:
A.QM1.Q shared in cluster A (alias for queue Q in qm QM1)
A.QM2.Q shared in cluster A (alias for queue Q in qm QM2)
B.QM3.Q shared in cluster B (alias for queue Q in qm QM3)
B.QM4.Q shared in cluster B (alias for queue Q in qm QM4)
C.QM1.Q shared in cluster C (alias for queue Q in qm QM1)
C.QM2.Q shared in cluster C (alias for queue Q in qm QM2)
C.QM3.Q shared in cluster C (alias for queue Q in qm QM3)
C.QM4.Q shared in cluster C (alias for queue Q in qm QM4)
(the above aliases allow you to access each queue individually in any of the three cluster contexts)
A.Q shared in cluster A (alias for queue Q in qm QM1)
A.Q shared in cluster A (alias for queue Q in qm QM2)
(the above aliases allow you to access queues in cluster A)
B.Q shared in cluster B (alias for queue Q in qm QM3)
B.Q shared in cluster B (alias for queue Q in qm QM4)
(the above aliases allow you to access queues in cluster B)
C.Q shared in cluster C (alias for queue Q in qm QM1)
C.Q shared in cluster C (alias for queue Q in qm QM2)
C.Q shared in cluster C (alias for queue Q in qm QM3)
C.Q shared in cluster C (alias for queue Q in qm QM4)
(the above aliases allow you to access queues in cluster C)
Hope it helps,
Dan |
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