How to find which host a VM is running on?

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Operating Systems Linux Red Hat How to find which host a VM is running on?

07-07-2014

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How to find which host a VM is running on?

We have quite a few Linux VMs running (several hundred). Some are running in VMware and some are running on Citrix XenServer.

I know that it is possible, for example, to go into vSphere and search for the host name. But there are times where it is not found for whatever reason and I want to log into the guest and see host what it thinks it is running on.

Does anyone know a way for either of the above to find out the host that is running a particular guest from the Linux guest OS?

I used to be able to do this with HP-UX HPVM by installing the vm toolbox onto the guest. And with Solaris sparse root zones I used to be able to tell by looking at the arp cache. I'm just checking if there is any way at all to do something similar with VMware or XenServer.

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LEARN ABOUT REDHAT

ypset

ypset(8)						      System Manager's Manual							  ypset(8)

NAME

       ypset - bind ypbind to a particular NIS server

SYNOPSYS

       ypset [ -d domain ] [ -h hostname ] server

DESCRIPTION

       In   order  to run ypset, ypbind must be initiated with the -ypset or -ypsetme options.	See ypbind(8).	ypset tells ypbind to get NIS ser-
       vices for the specified domain from the ypserv(8) process running on server.

       In cases where several hosts on the local net are supplying NIS services, it is possible for ypbind to rebind to another  host  even  while
       you attempt to find out if the ypset operation succeeded. For example, you can type:

       example% ypset host1
       example% ypwhich
       host2
       which  can  be confusing. This is a function of the NIS subsystem's attempt to know always a running NIS server, and occurs when host1 does
       not respond to ypbind because it is not running ypserv (or is overloaded), and host2, running ypserv, gets the binding.
       Server indicates the NIS server to bind to,  and must be specified as a name or an IP address. This will work only if the node has  a  cur-
       rent  valid  binding for the domain in question, and ypbind has been set to allow use of ypset.	In most  cases, server should be specified
       as an IP address.
OPTIONS

       -d domain
	      Specify a domain other than the default domain as returned by domainname(1).
       -h hostname
	      Set the NIS binding on host hostname
	       instead of the local machine.
SEE ALSO

       domainname(8), ypbind(8), ypcat(8), ypmatch(1), ypserv(8), yppoll(8), ypwhich(1)
AUTHOR

       ypset is part of the yp-tools package, which was written by Thorsten Kukuk <kukuk@suse.de>.

YP Tools 2.7							     May 1998								  ypset(8)