报错如下:
搜索后, 得知: "You need vCenter 5.1 To manage ESXi 5.1 host, you cannot add ESXi 5.1 to vCenter 5.0."
我的vCenter的确是5.0的, 而EXSi是5.1的.
按照下面链接里的内容升级vCenter, 问题解决.
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.upgrade.doc%2FGUID-BBE1D7FE-3189-4149-9D18-5DC2D75E4E5D.html#com.vmware.vsphere.upgrade.doc/GUID-317D6913-5228-4734-B799-4A08671F9361.html
参考资料
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Timed waiting for vpxa to start when trying to add an ESXi 5.1 host
http://communities.vmware.com/thread/417834?start=0&tstart=0