I have vCenter Server and ESXi 5.5, need to change host name and networking on both... How to do this without breaking them?

[chaoslord]

Hello,

I have a licensed ESXi and VCenter Server that my company purchased.  Since it was configured the company split up.  So now I need to change the host name and all network settings of both servers to the allowed settings for our net network and policies.  I really do not want to reinstall if at all possible.  Are there steps and order of which I should use to help get this done successfully so that these two machines will continue to work with each other?

I started to change the Host name and IP Address of the VCenter server and then I noticed the VSphere Web Client would not login.  So I changed it back to get it back working.  But I really need to get these changed so that my networking team will not come down on me later for not following new policies/standards.

Thank you in advance,

Larry

[DavoudTeimouri · Accepted solution]

There is no problem about ESXi servers, you can rename their DNS records and there is no need to any configuration if you have added them by DNS name, just you should reconfigure your management networks and add new IP address.

If you add them by IP, you should remove them from vCenter and add them after changing IP and also you should move your VMs to their folders in vCenter again!

About vCenter, the vCenter is registered in lookup service (SSO), so you need to re-register your vCenter server service, Inventory service and vSphere web client to SSO server.

You can find the instruction in this link: Re-pointing and re-registering VMware vCenter Server 5.1 / 5.5 and components (2033620) | VMware KB