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Message
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| saurabh25281 |
 Posted: Wed Oct 14, 2020 1:20 am Post subject: RDQM Setup |
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Centurion
Joined: 05 Nov 2006
Posts: 107
Location: Bangalore
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Hi All,
I am trying to setup RDQM on VMs. Below are the details of the systems used.
Used vagrant based rhel8 (3 nodes)
Used Bridged connection for all nodes - promiscuous Mode (allow all)
All nodes have ipv4 and reachable through one another (ping/ssh)
Installed rdqm dependencies & pre-requisites
Installed mq 9.2.0.1
Added volume group (drbdpool) in all 3 nodes of VM which looks like this.
| Code: |
VG #PV #LV #SN Attr VSize VFree
drbdpool 1 0 0 wz--n- 96.00m 96.00m
rhel_rhel8 1 3 0 wz--n- <127.00g 0 |
Updated /var/mqm/rdqm.ini
| Code: |
Node:
HA_Replication=192.168.0.x1
Node:
HA_Replication=192.168.0.x2
Node:
HA_Replication=192.168.0.x3 |
Executed /opt/mqm/samp/rdqm/firewalld/configure.sh
Executed /opt/mqm/bin/rdqmadm -c
The last step rdqmadm failed with error AMQ3875E: Failed to configure replicated data subsystem.
How can i investigate to find where I am going wrong with setting up RDQM.
Best Regards |
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| exerk |
| Posted: Wed Oct 14, 2020 8:31 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6208
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Questions:
1. Did you update the rdqm.ini file on all servers?
2. Did you run /opt/mqm/samp/rdqm/firewalld/configure.sh on all servers?
3. As which user did you execute /opt/mqm/bin/rdqmadm -c ?
The KC article for the version of MQ you're using, if using the same IP address for each interface, should (perhaps) look like this?
| Code: |
Node:
Name=rdqm-node-1.spiranthes.com
HA_Replication=192.168.4.1
Node:
Name=rdqm-node-2.spiranthes.com
HA_Replication=192.168.4.2
Node:
Name=rdqm-node-3.spiranthes.com
HA_Replication=192.168.4.3 |
Only places I can think of to check are the Pacemaker logs (/var/log/pacemaker/pacemaker.log, or as specified in /etc/sysconfig/pacemaker) and Corosync logs in the location stated in /etc/corosync/corosync.conf.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys.
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| saurabh25281 |
| Posted: Thu Oct 15, 2020 10:52 am Post subject: |
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Centurion
Joined: 05 Nov 2006
Posts: 107
Location: Bangalore
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| Quote: |
| 1. Did you update the rdqm.ini file on all servers? |
Yes
| Quote: |
| 2. Did you run /opt/mqm/samp/rdqm/firewalld/configure.sh on all servers? |
Yes
| Quote: |
| 3. As which user did you execute /opt/mqm/bin/rdqmadm -c ? |
root
The pacemaker was not installed earlier and now i am able to execute the command "/opt/mqm/bin/rdqmadm -c" successfully.
I checked the "rdqmstatus -n" and all nodes were online.
I was also able to create the secondary RDQM nodes using the command "crtmqm -sxs RDQM", but unable to successfully create the primary RDQM node with "crtmqm -sx RDQM"
Below are the details,
[root@node1 vagrant]# crtmqm -sx RDQM
| Code: |
Creating replicated data queue manager configuration.
IBM MQ queue manager created.
Directory '/var/mqm/vols/rdqm/qmgr/rdqm' created.
The queue manager is associated with installation 'Installation1'.
Creating or replacing default objects for queue manager 'RDQM'.
Default objects statistics : 83 created. 0 replaced. 0 failed.
Completing setup.
Setup completed.
Enabling replicated data queue manager.
AMQ3817E: Replicated data subsystem call '/usr/sbin/crm configure load update
/var/mqm/trace/rdqm.rdqm.config' failed with return code '1'.
ERROR: (unpack_config) warning: Blind faith: not fencing unseen nodes
(pe_find_constraint_tag) warning: No template/tag named 'rdqm'
(unpack_colocation_tags) error: Constraint 'rdqm_with_rdqmx': Invalid reference to 'rdqm'
(pe_find_constraint_tag) warning: No template/tag named 'rdqm'
(unpack_order_tags) error: Constraint 'rdqm_after_rdqmx': Invalid reference to 'rdqm'
(pe_find_constraint_tag) warning: No template/tag named 'rdqm'
(unpack_location_tags) error: Constraint 'rdqm_preferred_location': Invalid reference to 'rdqm'
Errors found during check: config not valid
AMQ3813E: Failed to enable replicated data queue manager. |
[root@node1 vagrant]# dspmq
QMNAME(RDQM) STATUS(Status not available) |
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| exerk |
| Posted: Thu Oct 15, 2020 11:37 am Post subject: Re: RDQM Setup |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6208
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You stated:
| saurabh25281 wrote: |
| ...Installed rdqm dependencies & pre-requisites... |
So how did you find out that Pacemaker wasn't installed?
Check the Pacemaker log for errors (you should be able to now it's installed) and check the content of /var/mqm/trace/rdqm.rdqm.config.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys.
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