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MQSeries.net Forum IndexClusteringclustering across multiple data centers

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gbaddeley
PostPosted: Thu Feb 22, 2018 6:07 pm Post subject: Re: clustering across multiple data centers Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2037
Location: Melbourne, Australia

mq__quest wrote:
Is building a MQ cluster across 2 data centers a good idea? could there be network and latency issues?

I am OK with this design, we use it, though data centers are only 20 miles apart and we have redundant 10 GBPS dedicated links between them.
If you have any concern about network reliability, ask the nw team about redundancy, network capacity and SLAs.
You should have a pre-prod / QA / SVT environment that will have same setup as intended in Prod, and you do satisfactory load / performance / failover testing.
MQ Client apps should preferrably connect to the most local qmgr (in the same data center) for best performance and reliability.
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Glenn
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mq__quest
PostPosted: Wed Apr 25, 2018 5:23 pm Post subject: Reply with quote

Apprentice

Joined: 21 Aug 2017
Posts: 29

bruce2359 wrote:
Replicated (mirrored) hot-site - one transaction, one cluster, is another possibility. I sense that the OP is uncertain here.


sorry for the delayed response. Yes, DCs are hot-sites. Could you explain what you mean by one transaction please?
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mq__quest
PostPosted: Wed Apr 25, 2018 5:32 pm Post subject: Re: clustering across multiple data centers Reply with quote

Apprentice

Joined: 21 Aug 2017
Posts: 29

gbaddeley wrote:
mq__quest wrote:
Is building a MQ cluster across 2 data centers a good idea? could there be network and latency issues?

I am OK with this design, we use it, though data centers are only 20 miles apart and we have redundant 10 GBPS dedicated links between them.
If you have any concern about network reliability, ask the nw team about redundancy, network capacity and SLAs.
You should have a pre-prod / QA / SVT environment that will have same setup as intended in Prod, and you do satisfactory load / performance / failover testing.
MQ Client apps should preferrably connect to the most local qmgr (in the same data center) for best performance and reliability.

Whats the best way to achieve HA and DR with this (2 DCs 1 Cluster ) Setup?
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mq__quest
PostPosted: Fri May 11, 2018 9:09 am Post subject: Reply with quote

Apprentice

Joined: 21 Aug 2017
Posts: 29

does multi-instance qmgrs serve the purpose of both HA and DA in this case?
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exerk
PostPosted: Fri May 11, 2018 1:19 pm Post subject: Reply with quote

Jedi Council

Joined: 02 Nov 2006
Posts: 6109

mq__quest wrote:
does multi-instance qmgrs serve the purpose of both HA and DA in this case?

No, MI is a High-Availability solution, but you might want to look into Disaster Recovery Replicated Data Queue Managers (DRRDQMs) as introduced in V9.0.5 CD.
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MQMB&WAS
PostPosted: Wed May 23, 2018 9:35 am Post subject: Re: clustering across multiple data centers Reply with quote

Voyager

Joined: 12 Jun 2016
Posts: 92

gbaddeley wrote:

I am OK with this design, we use it, though data centers are only 20 miles apart and we have redundant 10 GBPS dedicated links between them.
If you have any concern about network reliability, ask the nw team about redundancy, network capacity and SLAs.
You should have a pre-prod / QA / SVT environment that will have same setup as intended in Prod, and you do satisfactory load / performance / failover testing.
MQ Client apps should preferrably connect to the most local qmgr (in the same data center) for best performance and reliability.


Glenn, if the apps don't connect to all of its available qmgrs(to put), would't it cause throughput issues ? and what happens to the msgs when a app connecting to only 1 qmgr(to get) goes down?
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gbaddeley
PostPosted: Wed May 23, 2018 3:52 pm Post subject: Re: clustering across multiple data centers Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2037
Location: Melbourne, Australia

MQMB&WAS wrote:
gbaddeley wrote:

I am OK with this design, we use it, though data centers are only 20 miles apart and we have redundant 10 GBPS dedicated links between them.
If you have any concern about network reliability, ask the nw team about redundancy, network capacity and SLAs.
You should have a pre-prod / QA / SVT environment that will have same setup as intended in Prod, and you do satisfactory load / performance / failover testing.
MQ Client apps should preferrably connect to the most local qmgr (in the same data center) for best performance and reliability.


Glenn, if the apps don't connect to all of its available qmgrs(to put), would't it cause throughput issues ? and what happens to the msgs when a app connecting to only 1 qmgr(to get) goes down?

I said preferrably. If the most local qmgr is not available, it should try the next one (in the CCDT or whatever). However, some apps don't have the luxury of being portable across multiple hosting qmgrs (eg. MFT agents with client conns).

If a MQ client app runs on thousands of servers over a wide geographic area (think of a national retail chain), it makes sense to regionalize the connections into more than one qmgr.
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