MQ

I'm getting following error while creating QM on Node-1 on Primary region. I'm able to create QMs on Node-2 and Node-3 on both Primary and DR region. 

But, when i try to create same QMs on Primary nodes of both Primary and DR region, getting same error as follows.

Creating replicated data queue manager configuration.

AMQ3820E: Device '/dev/drbd/by-res/drhaqm1/0' not available after '10' seconds.

AMQ3812E: Failed to create replicated data queue manager configuration.

Is this issue related to DRBD Pool on RHEL 9? Using following DRBD kernel module

Any suggestions on which areas to investigate? 

Thanks,

Purush

This usually indicates a network connectivity issue. Check the TCP connectivity between the three replication IP addresses.

If you are using the standard RHEL firewall, there is a script that is supplied with MQ that will open up the default ports required by RDQM. You can find details in the "System requirements" section at https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-requirements-rdqm-ha-solution

If you are using a different firewall, you will have to do something equivalent.

John Colgrave

I'm getting following error while creating QM on Node-1 on Primary region. I'm able to create QMs on Node-2 and Node-3 on both Primary and DR region. 

But, when i try to create same QMs on Primary nodes of both Primary and DR region, getting same error as follows.

Creating replicated data queue manager configuration.

AMQ3820E: Device '/dev/drbd/by-res/drhaqm1/0' not available after '10' seconds.

AMQ3812E: Failed to create replicated data queue manager configuration.

Is this issue related to DRBD Pool on RHEL 9? Using following DRBD kernel module

Any suggestions on which areas to investigate? 

Thanks,

Purush

Hi Purush,

Further to John's reply, I would also check that the DRBD kernel module is loaded correctly in case that is why the DRBD device is not available. You can check this by using the rdqmstatus command without any parameters. See the following documentation links.

Viewing RDQM and HA group status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-viewing-rdqm-ha-group-status

Viewing RDQM DR status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=recovery-viewing-dr-rdqm-status

Kind regards,

Jamie

------------------------------
Jamie Squibb
IBM MQ Development

Original Message:
Sent: Thu May 16, 2024 02:18 AM
From: JOHN COLGRAVE
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

This usually indicates a network connectivity issue. Check the TCP connectivity between the three replication IP addresses.

If you are using the standard RHEL firewall, there is a script that is supplied with MQ that will open up the default ports required by RDQM. You can find details in the "System requirements" section at https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-requirements-rdqm-ha-solution

If you are using a different firewall, you will have to do something equivalent.

John Colgrave

------------------------------
John Colgrave
DR and HA Architect
IBM MQ

Original Message:
Sent: Wed May 15, 2024 01:23 PM
From: Purush Das
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

I'm getting following error while creating QM on Node-1 on Primary region. I'm able to create QMs on Node-2 and Node-3 on both Primary and DR region. 

But, when i try to create same QMs on Primary nodes of both Primary and DR region, getting same error as follows.

Creating replicated data queue manager configuration.

AMQ3820E: Device '/dev/drbd/by-res/drhaqm1/0' not available after '10' seconds.

AMQ3812E: Failed to create replicated data queue manager configuration.

Is this issue related to DRBD Pool on RHEL 9? Using following DRBD kernel module

Any suggestions on which areas to investigate? 

Thanks,

Purush

Thanks for the responses.

@JOHN COLGRAVE - There's a VPC peering connectivity issue between two regions. Firewall rules are looking good and all required ports are opened up.

@Jamie Squibb - DRBD kernel modules are loaded without any issues.

Original Message:
Sent: Thu May 16, 2024 05:32 AM
From: Jamie Squibb
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

Hi Purush,

Further to John's reply, I would also check that the DRBD kernel module is loaded correctly in case that is why the DRBD device is not available. You can check this by using the rdqmstatus command without any parameters. See the following documentation links.

Viewing RDQM and HA group status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-viewing-rdqm-ha-group-status

Viewing RDQM DR status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=recovery-viewing-dr-rdqm-status

Kind regards,

Jamie

------------------------------
Jamie Squibb
IBM MQ Development

Original Message:
Sent: Thu May 16, 2024 02:18 AM
From: JOHN COLGRAVE
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

This usually indicates a network connectivity issue. Check the TCP connectivity between the three replication IP addresses.

If you are using the standard RHEL firewall, there is a script that is supplied with MQ that will open up the default ports required by RDQM. You can find details in the "System requirements" section at https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-requirements-rdqm-ha-solution

If you are using a different firewall, you will have to do something equivalent.

John Colgrave

------------------------------
John Colgrave
DR and HA Architect
IBM MQ

Original Message:
Sent: Wed May 15, 2024 01:23 PM
From: Purush Das
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

I'm getting following error while creating QM on Node-1 on Primary region. I'm able to create QMs on Node-2 and Node-3 on both Primary and DR region. 

But, when i try to create same QMs on Primary nodes of both Primary and DR region, getting same error as follows.

Creating replicated data queue manager configuration.

AMQ3820E: Device '/dev/drbd/by-res/drhaqm1/0' not available after '10' seconds.

AMQ3812E: Failed to create replicated data queue manager configuration.

Is this issue related to DRBD Pool on RHEL 9? Using following DRBD kernel module

Any suggestions on which areas to investigate? 

Thanks,

Purush

Thanks for the responses.

@JOHN COLGRAVE - There's a VPC peering connectivity issue between two regions. Firewall rules are looking good and all required ports are opened up.

@Jamie Squibb - DRBD kernel modules are loaded without any issues.

Original Message:
Sent: Thu May 16, 2024 05:32 AM
From: Jamie Squibb
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

Hi Purush,

Further to John's reply, I would also check that the DRBD kernel module is loaded correctly in case that is why the DRBD device is not available. You can check this by using the rdqmstatus command without any parameters. See the following documentation links.

Viewing RDQM and HA group status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-viewing-rdqm-ha-group-status

Viewing RDQM DR status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=recovery-viewing-dr-rdqm-status

Kind regards,

Jamie

------------------------------
Jamie Squibb
IBM MQ Development

Original Message:
Sent: Thu May 16, 2024 02:18 AM
From: JOHN COLGRAVE
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

This usually indicates a network connectivity issue. Check the TCP connectivity between the three replication IP addresses.

If you are using the standard RHEL firewall, there is a script that is supplied with MQ that will open up the default ports required by RDQM. You can find details in the "System requirements" section at https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-requirements-rdqm-ha-solution

If you are using a different firewall, you will have to do something equivalent.

John Colgrave

------------------------------
John Colgrave
DR and HA Architect
IBM MQ

Original Message:
Sent: Wed May 15, 2024 01:23 PM
From: Purush Das
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

I'm getting following error while creating QM on Node-1 on Primary region. I'm able to create QMs on Node-2 and Node-3 on both Primary and DR region. 

But, when i try to create same QMs on Primary nodes of both Primary and DR region, getting same error as follows.

Creating replicated data queue manager configuration.

AMQ3820E: Device '/dev/drbd/by-res/drhaqm1/0' not available after '10' seconds.

AMQ3812E: Failed to create replicated data queue manager configuration.

Is this issue related to DRBD Pool on RHEL 9? Using following DRBD kernel module

Any suggestions on which areas to investigate? 

Thanks,

Purush

Thanks for the responses.

@JOHN COLGRAVE - There's a VPC peering connectivity issue between two regions. Firewall rules are looking good and all required ports are opened up.

@Jamie Squibb - DRBD kernel modules are loaded without any issues.

Original Message:
Sent: Thu May 16, 2024 05:32 AM
From: Jamie Squibb
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

Hi Purush,

Further to John's reply, I would also check that the DRBD kernel module is loaded correctly in case that is why the DRBD device is not available. You can check this by using the rdqmstatus command without any parameters. See the following documentation links.

Viewing RDQM and HA group status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-viewing-rdqm-ha-group-status

Viewing RDQM DR status
https://www.ibm.com/docs/en/ibm-mq/9.3?topic=recovery-viewing-dr-rdqm-status

Kind regards,

Jamie

------------------------------
Jamie Squibb
IBM MQ Development

Original Message:
Sent: Thu May 16, 2024 02:18 AM
From: JOHN COLGRAVE
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

This usually indicates a network connectivity issue. Check the TCP connectivity between the three replication IP addresses.

If you are using the standard RHEL firewall, there is a script that is supplied with MQ that will open up the default ports required by RDQM. You can find details in the "System requirements" section at https://www.ibm.com/docs/en/ibm-mq/9.3?topic=availability-requirements-rdqm-ha-solution

If you are using a different firewall, you will have to do something equivalent.

John Colgrave

------------------------------
John Colgrave
DR and HA Architect
IBM MQ

Original Message:
Sent: Wed May 15, 2024 01:23 PM
From: Purush Das
Subject: MQ Advanced RDQM DR/HA - MQ Advanced 9.3.5.0 on RHEL 9

I'm getting following error while creating QM on Node-1 on Primary region. I'm able to create QMs on Node-2 and Node-3 on both Primary and DR region. 

But, when i try to create same QMs on Primary nodes of both Primary and DR region, getting same error as follows.

Creating replicated data queue manager configuration.

AMQ3820E: Device '/dev/drbd/by-res/drhaqm1/0' not available after '10' seconds.

AMQ3812E: Failed to create replicated data queue manager configuration.

Is this issue related to DRBD Pool on RHEL 9? Using following DRBD kernel module

Any suggestions on which areas to investigate? 

Thanks,

Purush