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| belchman |
 Posted: Mon Sep 28, 2020 5:30 am Post subject: rdqm.ini |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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Have any of you been able to find a doc that explains the rdqm.ini, it properties and what the properties do?
I have searched and have found nothing.
We are in the initial stages of our first RDQM implementation and I am struggling with understanding how to set up communications to be most resilient.
If no one knows where the rdqm,ini is documented well, does anyone have any notes they discovered when they implemented RDQM?
I am hoping to understand what the entire set of properties are within rdqm.ini and what the properties do.
This page leaves a lot to the imagination:
https://www.ibm.com/support/knowledgecenter/SSFKSJ_9.1.0/com.ibm.mq.con.doc/q130290_.htm
Thanks,
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| john_colgrave |
| Posted: Wed Sep 30, 2020 4:24 am Post subject: |
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Newbie
Joined: 02 Jun 2014
Posts: 7
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| belchman |
| Posted: Wed Sep 30, 2020 4:47 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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John,
We have referred to that page many times but it leaves a lot to the imagination. It just says things like
HA_Primary
HA_Alternate
HA_Replication
DR_Replication
with scant explanation of what those properties support.
It would be sweet if there was a page like this
https://www.ibm.com/support/knowledgecenter/SSFKSJ_9.0.0/com.ibm.mq.con.doc/q018910_.htm
that was relative to rdqm.ini.
As it is, we will have to extrapolate what the properties of the rdqm.ini will cause to happen based solely on the property name.
For example, for HA_Replication on node A, is that the address of where the replication data is being sent or where it is being received? I know the answer now, but it took too long to figure out.
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| crashdog |
| Posted: Wed Sep 30, 2020 8:54 am Post subject: |
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Voyager
Joined: 02 Apr 2017
Posts: 77
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Just out of curiosity, which MQ version will you be using ? I've not been able to get RDQM working using LTS version including 9.2.0.0. I've only gotten CD versions to work. Of which I tried 9.1.4.0 and 9.1.5.0.
And yes, documentation is sparse on that subject. I suggest though to read the drbd and pacemaker documentations.
Cheers,
Gerhard
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| belchman |
| Posted: Wed Sep 30, 2020 9:07 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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We will be using 9.2.0 LTS.
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| john_colgrave |
| Posted: Wed Sep 30, 2020 11:18 pm Post subject: |
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Newbie
Joined: 02 Jun 2014
Posts: 7
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9.2.0.0 is both a CD release and an LTS release and RDQM should work fine.
The KC page says "The rdqm.ini file gives the IP addresses for all of the nodes in the Pacemaker cluster." so you give the one, two or three IP addresses of each node, not the IP addresses they connect to (each node connects to the other two). |
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| belchman |
| Posted: Thu Oct 01, 2020 3:36 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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Thank you John
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| crashdog |
| Posted: Thu Oct 01, 2020 6:45 am Post subject: |
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Voyager
Joined: 02 Apr 2017
Posts: 77
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Do you have a working 9.2.0.0 RDQM installation on RHEL 7 or 8?
I will be installing 9.2. on RHEL 7.8 in the next 2 weeks on my office systems. In my homelab I failed to get it running. Also on RHEL 8. But I can only open a PMR if my office installation fails too.
Cheers,
Gerhard
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| belchman |
| Posted: Thu Oct 01, 2020 6:53 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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Not yet. We installed MQv9.2 on Redhatv7.8 but are still working on getting pacemaker cluster set up.
Have meetings today about how many IPs we need on each node.
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| crashdog |
| Posted: Thu Oct 01, 2020 7:56 am Post subject: |
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Voyager
Joined: 02 Apr 2017
Posts: 77
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It depends a bit on how you set it up. Physical NICs or virutal NICs. In later case one IP for the replication and heartbeat will be sufficient. If you have physical NICs it also depends on how they're connected.
At least that's my takeaway from reading the documentation.
The floating IP can be attached to the same nic as used for general purpose. e.g. eth0:1. The only requirement from what I understand is there they (nic names) are unique on each node and reserved per queue manager.
Cheers,
Gerhard
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