Hi Julien,
Today I tried the the method you gave me yesterday, Unfortunately， it does not work well. So I gave up and continued to anther trial.
Then I reinstalled the vcenter. I noticed that when I was installing the vcenter, there was one step which I should input FQDN or IP of the vcenter.
I chose to input computer name, not like the first time to input IP.
At last, I tried to change IP several times, and then restarted the service successfully and login to vcenter.
Maybe we should input the computer name when we are installing vcenter, it is an easy way to change ip without casing errors.
Thanks a lot!
