LVDA 1912 CU2 : Linux VDA + MCS fails to register - SingleMultiSessionMismatch

LVDA 1912 CU2 : Linux VDA + MCS fails to register - SingleMultiSessionMismatch

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Article ID: CTX331554

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Description

- Ubuntu 18.04 VDA's on LVDA 1912.2000 fail to register with the DDC
- We see the below error in the vda.log:
[2020/12/07 20:21:19.8799651] [BrokerAgent] [Error] AttemptRegistrationWithSingleDdc: Registration with 'exampleddc01.example.com @ xx.xx.x.x' failed. RejectionCode='SingleMultiSessionMismatch'
[2020/12/07 20:21:19.8862378] [BrokerAgentAoTracing] [Error] REGISTRATION Failed registration: VDA machine SID: S-1-5-21-xxxxx-xxxxxx-xxxxxx-xxxxx, Broker: exampledc.example.com @ xx.xx.x.x, Heartbeat period: 0 Error: SingleMultiSessionMismatch
 

Resolution

- VDI_MODE was set to N in /etc/xdl/mcs/mcs.conf and the catalog type was single session.
- For single Session VDA we need to set the VDI_MODE to 'Y' in the file /etc/xdl/mcs/mcs.conf
- Changing VDI_MODE to Y and creating new machines resolved the issue.

Problem Cause

- VDI_MODE was set to N in /etc/xdl/mcs/mcs.conf and the catalog type was single session.
- VDI_MODE set to 'N' means the VDA is configured to be used in multisession mode
- However the catalog was configured for Single session OS and this caused the issue with the registartion.