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failover – unable to authenticate

Solved1.07K views28th March 2022authentication Failover
2
Jeroen Geldhof [SLC] [DevOps Enabler]5.07K 28th March 2022 0 Comments

While setting up a failover we are getting errors that the main DMA is not able to authenticate on the backup DMA.
I double checked from both sides that slnetclienttesttool can log in on the other DMA with the Administrator account
Second I also checked the firewall, but on both servers it’s disabled.

I would like to know what user account DataMiner tries to use to log in on the other DMA, is that something that we can track back?

Jeroen Geldhof [SLC] [DevOps Enabler] Selected answer as best 28th March 2022

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Bert Buysschaert [SLC] [DevOps Advocate]4.87K Posted 28th March 2022 2 Comments

Hi Jeroen,

I recently ran into a similar issue. Both agents were still empty and only had the Administrator account with the same password. It turned out that one of the agents was not properly added into the Windows domain. I was able to verify this by going to System Center > Users and trying to add an existing user: the list of domain users did not load.

Jeroen Geldhof [SLC] [DevOps Enabler] Selected answer as best 28th March 2022
Jeroen Geldhof [SLC] [DevOps Enabler] commented 28th March 2022

Hi Bert,

You’re correct, on that one DMA it’s indeed not loading the domain users.
I checked on Windows level that the server is part of the domain though.

Do I try a reboot or something like that?

Bert Buysschaert [SLC] [DevOps Advocate] commented 28th March 2022

The quickest way to rejoin the domain is as follows:
netdom resetpwd /Server:dc.contoso.com /UserD:Jeroen /PasswordD:* /SecurePasswordPrompt
If I remember correctly this should not require a Windows reboot but possibly a DataMiner restart.

Some background information:
https://ss64.com/ps/test-computersecurechannel.html
https://ss64.com/nt/netdom-resetpwd.html

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