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| dilse |
 Posted: Mon May 15, 2006 9:33 am Post subject: HACMP for WMB V6 |
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Master
Joined: 24 Jun 2004
Posts: 270
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Hi All,
We are trying to configure HACMP on our AIX boxes, which are on WMB V6 & WMQ V6. I can see that there is a SupportPac IC61 for configuring HACMP on AIX box but as it stands now that it is for versions 2.1 and 5.0 only, which does not allow for ConfigMgr failover.
I am just wondering if anyone has implemented this scenario in their environments. I am sure a lot of people went thru this situation. I would appreciate if you share your thoughts on this.
Thanks in advance,
DilSe.. |
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| wschutz |
| Posted: Mon May 15, 2006 9:41 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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Its my understand that an update to the supportpac is in the works (but no ETA).
Since the ability to have the configmgr on unix is new with V6, there might not be a lot of opinion on the topic yet. Some considerations would be:
(1) are you going to deploy the configmgr to the same machine as the broker or leave it on windows?
(2) do you need to failover the configmgr? Since its not absolutely required for the broker's operation, you might not want to fail it over
(3) if you do, I'd recommend putting it into its own respource group with its own qmgr .....
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-wayne |
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| dilse |
| Posted: Mon May 15, 2006 10:29 am Post subject: |
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Master
Joined: 24 Jun 2004
Posts: 270
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Thanks a lot for the quick response Wayne.
Since we planned for deploying the CONFIGMGR to the same machine as the Broker, we are thinking of two choices for CONFIGMGR that doesn't get failover.
1. Installing the CONFIGMGR on one AIX box only. If one box fails, we can always create CONFIGMGR on the fly on the other box if needed.
2. Installing the CONFIGMGR on both boxes separately with different Queue Managers sothat if one box fails we could use the other CONFIGMGR on the other box.
We are inclined towards Option 2 provided if its a feasible solution.
Please share your thoughts.
Thanks, DilSe.. |
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| vennela |
| Posted: Mon May 15, 2006 10:45 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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I am not sure what your configuration and plan is but I think you got the HA concept little wrong.
You will create the component on only one box. You will install the product on both boxes though. Now when you create the component (maybe QMGR or Broker or ConfigMgr), you will put the user data part of it on a failoverable shared mount point. |
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| dilse |
| Posted: Mon May 15, 2006 11:40 am Post subject: |
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Master
Joined: 24 Jun 2004
Posts: 270
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Vennela, I know that we dont create components on both boxes if we want to get them failed over but as I mentioned in my earlier post, we are not doing a failover for CONFIGMGR since we dont have script for CONFIGMGR to failover and we want to have CONFIGMGR on the same box as Broker. Thats why we are thinking of these two options. Please let me know what you think.
Thanks, DilSe.. |
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| wschutz |
| Posted: Mon May 15, 2006 11:50 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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Then the right way to do this would be to modify the scripts to failover the configmgr and broker together.
I don't think having two configmgr's for a single broker (which is what this would imply) works.
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-wayne |
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| vennela |
| Posted: Mon May 15, 2006 11:53 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| jefflowrey |
| Posted: Mon May 15, 2006 12:04 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You can NOT register the same broker to TWO configmgrs.
If you fail a broker over using PROPER HA, it is the same broker on the other machine, so it is still registered to the other configmgr.
There is no useful benefit to having a configmgr on the same machine as the broker. There might be some slight performance benefit - but not enough to really matter.
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I am *not* the model of the modern major general. |
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| dilse |
| Posted: Mon May 15, 2006 1:48 pm Post subject: |
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Master
Joined: 24 Jun 2004
Posts: 270
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Thanks for all your valuable replies. Now I realized Option 2 is not a possible solution. Does anyone has any script that is already written for CONFIGMGR failover. Please let me know.
We do not have any other boxes allocated for us to install the Configmgr except the two HA boxes that we are using for the Broker to failover. What do you think is the best strategy to go with assuming we dont have script for the CONFIGMGR failover.
Thanks, DilSe.. |
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| jefflowrey |
| Posted: Mon May 15, 2006 3:15 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Look, what's the issue with failing over the configmgr?
On WMB6, the configmgr uses the derby database (unless you've told it to use DB2). So just make sure that all of the configmgr's filesystems are on shared disk, make sure the disk fails over, and issue mqisstart <configmgr> after failover...
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I am *not* the model of the modern major general. |
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| dilse |
| Posted: Mon May 15, 2006 3:31 pm Post subject: |
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Master
Joined: 24 Jun 2004
Posts: 270
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Will do. Thanks a lot Jeff. I am not going to use DB2. That should make my life easier.  |
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| positional |
| Posted: Fri Jul 14, 2006 5:01 am Post subject: HACMP for WMQ V6 |
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Newbie
Joined: 14 Dec 2005
Posts: 4
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Hello,
I'm working on designing HACMP solution for WMQ V6 using a support pack MC91 and have a question.
Per MC91 doc, under active/standby model, we're moving MQ data and logs to the shared disk:
MQ data from /var/mqm/qmgrs/<qmgr> to /MQHA/<qmgr>/data
MQ logs from /var/mqm/log/<qmgr> to /MQHA/<qmgr>/log
What exact data/directories are we supposed to move from /var/mqm/qmgrs/<qmgr> and /var/mqm/log/<qmgr> to make it work?
I'd appreciate any input.
Regards,
Mark |
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| jefflowrey |
| Posted: Fri Jul 14, 2006 1:56 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Let the support pack scripts do the work for you.
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I am *not* the model of the modern major general. |
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| markhiscock |
| Posted: Mon Jul 17, 2006 12:52 am Post subject: |
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Novice
Joined: 16 May 2005
Posts: 22
Location: IBM Hursley, UK
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Hi Positional,
As Jeff says, the support pac scripts will help you to create a queue manager on the shared disk and create the necessery links in /var/mqm to make it work. This should all be documented in MC91's readme.
Mark |
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| smdavies99 |
| Posted: Mon Jul 17, 2006 1:25 pm Post subject: When using the Cloudscape/derby configmgr database |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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in an active passive HACMP environment just make sure that
1) the database is on the shared volume ( -w on the mqsicreateconfigmgr command)
2) Any other files created in /var/mqsi that releate to the configmgr are copied over to the other side.(If any) or made accessible via a soft link.
Then when you startup the configmgr after the failover, it finds exactly the same environment as was available on the original system.
There might be a bit of trial and error to get it all to work until the aforementioned supportpack is available. This should explain everything you need to do in all its gory details.
IMHO that it is a lot easier on Unix type platforms than on Windows when there is that pesky thing called a registry gummig up the works.
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WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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