Enable SSH for SnapCenter Plug-in for VMware vSphere
When the SnapCenter Plug-in for VMware vSphere is deployed, SSH is disabled by default.
Steps
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From the VMware vSphere client, select the VM where the SnapCenter Plug-in for VMware vSphere is located.
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In the Summary tab of the virtual appliance select Launch Remote Console to open a maintenance console window, and then log on.
For information on accessing and logging on to the maintenance console, refer to Access the Maintenance Console.

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From the Main Menu, select menu option 2) System Configuration.
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From the System Configuration Menu, select menu option 6) Enable SSH access and then enter “y” at the confirmation prompt.
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Wait for the message “Enabling SSH Access…” then press Enter to continue, and then enter X at the prompt to exit Maintenance Mode.