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Reactivating a previously broken failover

Solved1.03K views22nd August 2023Agent failover configuration
0
Laszlo Szabados [DevOps Enabler]216 22nd August 2023 0 Comments

Hi, I’m trying to reactivate the failover for 2 Agents which were already members of a failover pair previously, but the failover connection was removed.

When trying to add the backup Agent again, Cube throws the following error:

At the same time, SLNet logs the following on the main Agent:

2023-08-22 13:13:29.650|210|Facade.HandleMessage|Incoming (Cube (Administrator @ DMA-PRD-01-MAIN)): Get IP Adapters for ‘192.168.0.43’
2023-08-22 13:13:29.650|210|Remoting.HandleMessages|Exception while handling Encrypted Messages (624 bytes): System.InvalidOperationException: Connection was already established before
at Skyline.DataMiner.Net.MessageBuilder.GetIPAdapters(IConnectionInfo connInfo, GetIpAdaptersMessage req)

Could you please suggest a possible solution?

Thank you.

Laszlo Szabados [DevOps Enabler] Selected answer as best 22nd August 2023

1 Answer

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Ive Herreman [SLC] [DevOps Enabler]13.59K Posted 22nd August 2023 4 Comments

Hi Laszlo,

To be able to configure failover again, you’ll first have to clean the backup agent.

Ive Herreman [SLC] [DevOps Enabler] Posted new comment 23rd August 2023
Laszlo Szabados [DevOps Enabler] commented 22nd August 2023

Hi Ive, I’ve run the reset tool, but it didn’t help, I still have the same error message. I think it’s something rather stuck on the main Agent, however there are no references of the backup IP address I’m trying to use in any of the configuration XMLs.

Ive Herreman [SLC] [DevOps Enabler] commented 22nd August 2023

Could you share a screenshot of the c:Skyline DataMienrDMS.xml file from both servers?

Laszlo Szabados [DevOps Enabler] commented 22nd August 2023

Thanks for the hint. For some reason the DMS.xml on the main Agent referenced the main Agent with the virtual hostname of the failover pair. After modifying it to the IP of the Agent, the failover setup was restored fine.

Ive Herreman [SLC] [DevOps Enabler] commented 23rd August 2023

Great to hear! Thanks for letting us know.

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