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| guest468 |
 Posted: Wed Jan 04, 2012 7:20 am Post subject: HA setup help |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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I have a question related to MQ V7 HA setup on redhat cluster suite.
Can i create 2 mount points /var/mqm and /var/mqm/log on SAN and configure them as the failover points? (instead of qmgr-data and log). This way we will be moving over complete MQ data(/var/mqm) during failover. |
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| bruce2359 |
| Posted: Wed Jan 04, 2012 7:22 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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Have you tried this? What were the results?
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| guest468 |
| Posted: Wed Jan 04, 2012 7:28 am Post subject: |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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Bruce,
yes i tried this approach earlier on VCS and haven't seen any issues; successfully failed over dozens of time. But i might be missing some inherent flaw in this approach ? any suggestions pls? |
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| zpat |
| Posted: Wed Jan 04, 2012 7:41 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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You wouldn't want to do this if you had any non-HA queue managers or more than one HA group (which could fail over separately).
What happens if you want to test a MQ upgrade on the passive side - quite often this is useful to do? |
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| mehedi |
| Posted: Wed Jan 04, 2012 8:51 am Post subject: |
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Centurion
Joined: 11 Nov 2001
Posts: 102
Location: PSTech
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what are the files in /var/mqm. if i'm not mistaken mqs.ini is one of them. if This is a n+1 (number of active servers, one failover server) configuration , the mqs.ini file will get replaced with the file from last failed over server.
Without the qm entry in mqs.ini the qm's cannot be started. |
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| guest468 |
| Posted: Wed Jan 04, 2012 10:55 am Post subject: |
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Centurion
Joined: 30 May 2006
Posts: 146
Location: NY
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| thanks zpat. makes sense. |
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