[ovirt-users] Hosted engine deploy: problem with the rDNS of another iface

[Simone Tiraboschi]

On Wed, Sep 14, 2016 at 1:53 PM, Davide Ferrari <davide at billymob.com> wrote:

> Ciao Simone!
>
> Absolutely, here it is (please not that I've obfuscated domain names but
> they are consistent with what I wrote before, the hostnames are exactly the
> same I have in my env). If you need the original log, tell me but I will
> mail it to you privately.
>

The issue is here:

2016-09-14 13:47:51 DEBUG otopi.plugins.gr_he_common.network.bridge
bridge._get_hostname_from_bridge_if:325 hostname: 'vm01.mydomain.tld',
aliaslist: '[]', ipaddrlist: '['192.168.10.225', '10.30.0.1']'

You can reproduce it with:
    python -c 'import socket;
print(socket.gethostbyaddr("192.168.10.225"));'

'vm01.mydomain.tld' should resolve just on the interface you selected to
create the management bridge on.
This is because hosted-engine-setup is creating the management bridge on
that interface before starting the engine VM and when when it will call
hosts.add on the REST API to add your first host to the engine it can just
specify an host address by not an interface name and so host-deploy,
triggered by the engine, will recreate the management bridge on the
interface where the address we passed resolves on.
So we have to avoid any ambiguity here.



>
> Thanks!
>
> 2016-09-14 13:37 GMT+02:00 Simone Tiraboschi <stirabos at redhat.com>:
>
>>
>> On Wed, Sep 14, 2016 at 1:25 PM, Davide Ferrari <davide at billymob.com>
>> wrote:
>>
>>> Hello
>>>
>>> I've got the same exact problem as in this thread:
>>>
>>> http://lists.ovirt.org/pipermail/users/2016-July/041111.html
>>>
>>> (sorry for not answering there but I've just subscribed). The error (for
>>> the record) is:
>>>
>>> Failed to execute stage 'Setup validation': hostname 'vm01.mydomain.tld'
>>> doesn't uniquely match the interface 'bond0' selected for the management
>>> bridge; it matches also interface with IP set(['10.30.0.1']). Please make
>>> sure that the hostname got from the interface for the management network
>>> resolves only there.
>>>
>>> 10.30.0.1 is set on bond1 and is used for the glusterfs network. The
>>> python output is:
>>>
>>> python -c 'import socket; print(socket.gethostbyaddr("10.30.0.1"));'
>>> ('glu-ovirt01.storage', [], ['10.30.0.1'])
>>>
>>> which obviously is completely different from vm01.mydomain.tld.
>>> So, I don't really get this error. I've used glu-ovirt01.storage:/engine
>>> as the glusterfs entry point for storing the engine image, that's all.
>>>
>>> Any idea on how to fix the error?
>>>
>>
>> Ciao Davide,
>> can you please attach the whole hosted-engine-setup log file?
>>
>>
>>>
>>> TIA
>>>
>>> --
>>> Davide Ferrari
>>> Senior Systems Engineer
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>
>
>
> --
> Davide Ferrari
> Senior Systems Engineer
>
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