How to add ESXi host on to vCenter Server

 Log in vCenter server.

 Before adding ESXi server, you have to make Datacenter in vCenter

 Input your Datacenter name

 Right click on your Datacenter and add host.

 Enter the name or IP of your ESXi host.

 Choose Lockdown mode. Normally disabled

 If  you have several datacenter, you will choose one of them but today is just one.

After finishing add host wizard, you can see your ESXi server and its VMs.