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Your environment is now in mixed mode. It is recommended you update your linked vCenter Servers to the same version - Logging into vCenter 7.0 Showing warning message/banner (78720)

Last Updated: 4/26/2021Categories: TroubleshootingTotal Views: 18247Language:
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Symptoms

Logging into vCenter 7.0 Showing warning message/banner : "Your environment is now in mixed mode. It is recommended you update your linked vCenter Servers to the same version"

vCenter System Configuration topology shows all vCenters are in same version

Issue may observe in standalone vCenter as well

Cause

This issue can occur if there are stale vCenter entries in lookupservice registration, or nodes that have not been upgraded yet in linked mode.

Resolution

Caution: This procedure involves data modification on vCenter Server Appliance. Ensure you have valid backup of all vCenter Servers in replication partnership. If you are taking a snapshot before the change, all vCenters in replication partnership with the vCenter where the change is made need to be powered off at the same time to take a consistent snapshot state of the vCenter.

To resolve this issue, find the stale registration and unregister it from lookupservice:

login to VCSA using SSH with root credentials

Run the following command to get the service registrations.

/usr/lib/vmware-lookupsvc/tools/lstool.py list --url https://localhost/lookupservice/sdk --type vcenterserver > /tmp/psc.txt --no-check-cert

use less/vi to open /tmp/psc.txt to review presence of any stale registration

Sample lstool output section for vCenter registration may look like :

Name: AboutInfo.vpx.name
Description: AboutInfo.vpx.name
Service Product: com.vmware.cis
Service Type: vcenterserver
Service ID: default-first-site:3c80e5dd-b67f-43c5-ac9d-8091e26c0378
Site ID: default-site
Node ID: 12833276-6d55-493f-bf26-285919ae9242
Owner ID: [email-masked]
Version: 5.1
Endpoints:

Name: AboutInfo.vpx.name
Description: AboutInfo.vpx.name
Service Product: com.vmware.cis
Service Type: vcenterserver
Service ID: abd2e86e-f316-4cb8-8fb7-f389e3a012e1
Site ID: default-first-site
Node ID: d4b8027e-d3e8-4c84-aee5-48d5df23f5e7
Owner ID: [email-masked]
Version: 7.0
Endpoints:

Name: AboutInfo.vpx.name
Description: AboutInfo.vpx.name
Service Product: com.vmware.cis
Service Type: vcenterserver
Service ID: 218df911-166d-4d41-a629-917598456876
Site ID: default-site
Node ID: 12833276-6d55-493f-bf26-285919ae9242
Owner ID: [email-masked]
Version: 7.0

From the output if you see a stale registration, note down the Service ID

In this example: default-first-site:3c80e5dd-b67f-43c5-ac9d-8091e26c0378

Remove the old service registration using the below command.

/usr/lib/vmware-lookupsvc/tools/lstool.py unregister --url https://localhost/lookupservice/sdk --id default-first-site:3c80e5dd-b67f-43c5-ac9d-8091e26c0378 --user [email-masked]' --password '<password>' --no-check-cert

Re-login to the Web Client.

Note: This is only intended to remove stale vCenter service registrations. For vCenter registrations in linked mode that have not yet been upgraded, those should be upgraded and not removed using the commands above.

Detectable by VMware SkylineTM

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