Hi,

On Tuesday, 25 May 2021 16:00:13 CEST [email protected] wrote:
> Hi everyone,
> I found 3 servers (HV1, HV2, HV3) that contains VMs at another servers room.
> These servers are hosts based on KVM.
 I logged into oVirt Engine Web
> Administration. Data Centers tab show me only one entry Name: RCV
> Storage: Shared
> Status: Not Operational
> Compability Version: 3.4 
> Description: [Empty]
> Webbrowser oVirt Engine Web Administrator show me
> oVirt Engine Version: 3.4.0-1.el6
> One VM on HV3 has stopped, Hosts tab show Non Responsive Status for every
> host (HV1-3);

If all the hosts are non-responding, the data center status is also non-
operational. Start with investigation why these hosts are down/non-responsive. 
If there are alive and you can ssh there, check is vdsmd service is running. 
If it's running, check vdsm logs (/var/log/vdsm/vdsm.log) if there are any 
error.

Also 3.4 is very old version, once you make it running, you should really 
consider to upgrade

> every VM in Virtual Machines tab  show Unknown status. 
 What
> do I'll do to change status in Data Center? How to start debug the reason?
> Last administrator leave documentation in vestigial form :) 
> DataCenter: RCV
> -->Cluster: RCV_Cluster
> ---->Host: HV1 node
> ---->Host: Hv2 node
> ---->Host: HV3 engine
> 
> Best regards,
> nexpron
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