How to register/add a VM to the Inventory in vCenter Server

Reference:
How to register/add a VM to the Inventory in vCenter Server

如果需要把 VM 加回 ESXi host 或 vCenter，步驟如下：

1. Open the vSphere/VMware Infrastructure (VI) Client and log in with appropriate credentials.
2. If connecting to vCenter Server, click on the desired host.
3. Click the Configuration tab.
4. Click Storage.
5. Right-click on the appropriate datastore and click Browse Datastore.
6. Navigate to the folder named after the virtual machine, and locate the virtual machine.vmx file.
7. Right-click the .vmx file and click Add to inventory. The Add to Inventory wizard opens.
8. Continue to follow the wizard to add the virtual machine.