Hostname of this host on the management network: Host name is not valid

Question

Note: This question might be a duplicate of this (it dealt with the GUI/cockpit installation) and this, however, those solutions did not work for me.

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I have never ever used ovirt (this is my first time). I’d like to install it on a single physical server.

I have installed a CentOS 8 server, installed the required repo and packages (incl cockpit). Now I need to run hosted-engine --deploy to deploy the engine (I’d like to create the engine in a VM).

Everything seemed okay until the following showed up:

[ INFO  ] Stage: Setup validation
          Please provide the hostname of this host on the management network [host.domain.lan]:                                                
[ ERROR ] Host name is not valid: Host name host.domain.lan is not valid

host.domain.lan is FQDN hostname of the host (CentOS 8). As I understand it, neither IP nor non-DNS-resolvable hostname is not valid for ovirt.

I have never ever dealt with DNS (except for setting it up to 1.1.1.1 and 8.8.8.8). I know that CentOS 8 uses NetworkManager by default, so I tried to add (using nmcli) a third DNS address, the address of the ovirt host (CentOS 8). /etc/resolv.conf indeed contained the address, but hosted-engine did not work.

Note that I have added two IPs with FQDNs into /etc/hosts, one for the host server (CentOS 8) and one for the ovirt engine (which should be deployed by the command and therefore the IP is not yet used). See below.

192.168.1.27 host.domain.lan
192.168.1.50 engine.domain.lan

I don’t want to use a private nor external/public DNS server.

Also note that when the program asked me if it should edit hosts file, I have answered yes.

How could I make hosted-engine work?

Thanks for the help!

Answer 1

Note: This is my first response on Stack Overflow.

I have tried to reproduce the issue you are facing and I am pretty sure that the Host FQDN resolution is not working locally for you.

Reproducer Steps:

System Details & Networking:

# grep PRETTY_NAME /etc/os-release 
PRETTY_NAME="oVirt Node 4.4.2" <- Latest Ovirt node

[root@rhvh ~]# cat /etc/resolv.conf 
# Generated by NetworkManager
search local
nameserver 192.168.122.1 

[root@rhvh ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.122.184 rhvh.local  rhvh
192.168.122.200 rhvm.local  rhvm

Snippet of 'hosted-engine --deploy' execution:

[1]
          --== HOST NETWORK CONFIGURATION ==--
          Please indicate the gateway IP address [192.168.122.1]: 


[2]
          Please indicate a nic to set ovirtmgmt bridge on: (ens1) [ens1]: 
          Please specify which way the network connectivity should be checked (ping, dns, tcp, none) [dns]: 
         


[3] 
How should the engine VM network be configured (DHCP, Static)[DHCP]? Static 
Please enter the IP address to be used for the engine VM []: 192.168.122.200

[ INFO  ] The engine VM will be configured to use 192.168.122.200/24
Please provide a comma-separated list (max 3) of IP addresses of domain name servers for the engine VM
Engine VM DNS (leave it empty to skip) [192.168.122.1]: 
Add lines for the appliance itself and for this host to /etc/hosts on the engine VM?
Note: ensuring that this host could resolve the engine VM hostname is still up to you
(Yes, No)[No] Yes


[4]
Please provide the hostname of this host on the management network [rhvh.local]: 
[WARNING] Failed to resolve rhvh.local using DNS, it can be resolved only locally

Could you try to set the DNS as '192.168.1.1' in /etc/resolv.conf? Also, make sure you have answered the above 3 questions carefully which will contribute to correct FQDN resolution.