[ovirt-users] Hosted-engine --deploy FQDN questions

[Mark Steckel]

Yedidyah - very helpful! Thanks.

A follow-up question re the FQDN for the hosted engine: My understanding is that the FQDN must be resolvable when "hosted-engine --deploy" is executed. However, should the IP that the FQDN resolves to also be assigned/up when "hosted-engine --deploy" is executed?



----- Yedidyah Bar David <didi at redhat.com> wrote:
> On Wed, Dec 7, 2016 at 11:36 AM, Mark Steckel <mjs at fix.net> wrote:
> > Marcin,
> >
> > ----- Marcin Mirecki <mmirecki at redhat.com> wrote:
> >> Mark,
> >>
> >> >           Enter the name which will be used to identify this host inside the
> >> >           Administrator Portal [hosted_engine_1]:
> >>
> >> This is the name used for the host inside the Administrator Portal, so basically
> >> the name of the VM inside the system.
> >> This does not have to be the hostname, but there are also no objection for it.
> >>
> >>
> >> >           Engine FQDN:  []:
> >> Yes, you are correct. This must be the FQDN of the host, resolvable to IP.
> >> This fqdn will be used to access the administration portal.
> >
> > If I understand you correctly, both questions apply to the hosted engine vm. Correct?
> 
> No.
> 
> The first question is about the host, but not about its address or dns name.
> It's about the name it will have in the engine, the one you see in the admin ui,
> in "Hosts", as "Name". After too many questions about this question, we decided
> to remove it, and in 4.1 it will simply default to the hostname. You'll still be
> able to set it by manually editing the answer file or passing otopi
> env, but will
> not be prompted for it.
> 
> The second question is indeed about the name that will be used to access
> the engine vm.
> 
> Then there is a third item, which we do not ask about: The name that the
> engine should use to access the host. This is what you see in the admin ui,
> in "Hostname/IP". This item is determined the following way, for the first
> host: You are prompted for a NIC to use for the management bridge, we check
> the IP address of this NIC, then do a reverse-lookup (gethostbyaddr) on this
> address, and use the result. So you should make sure that this nic has an
> IP address, that this address has a name (in /etc/hosts or dns), and that
> this name will also be resolvable and point to the host, when used inside
> the engine vm (again, by either using dns or manually setting it in
> /etc/hosts there).
> 
> >
> > (If so, I'm glad I asked, because I initially and incorrectly thought that the first question referred to the bare metal machine that hosts the hosted engine vm.)
> 
> Hopefully the above clarifies this. Please do not hesitate to ask if
> there are still questions. Also, suggestions for better texts, to make
> this simpler for the admin, are more than welcome! :-)
> 
> Best,
> 
> >
> > Thanks
> > Mark
> >
> >
> >
> >>
> >> Marcin
> >>
> >>
> >> ----- Original Message -----
> >> > From: "Mark Steckel" <mjs at fix.net>
> >> > To: users at ovirt.org
> >> > Sent: Wednesday, December 7, 2016 6:08:38 AM
> >> > Subject: [ovirt-users] Hosted-engine --deploy FQDN questions
> >> >
> >> > Folks,
> >> >
> >> > I'm an OVirt newbie having troubles setting up my first Hosted Engine and am
> >> > stumbling. In this case I think it may be because of the following two
> >> > set-up questions.
> >> >
> >> >           Enter the name which will be used to identify this host inside the
> >> >           Administrator Portal [hosted_engine_1]:
> >> >           Please provide the FQDN for the engine you would like to use.
> >> >           This needs to match the FQDN that you will use for the engine
> >> >           installation within the VM.
> >> >           Note: This will be the FQDN of the VM you are now going to create,
> >> >           it should not point to the base host or to any other existing
> >> >           machine.
> >> >           Engine FQDN:  []:
> >> >
> >> > My read of this is that the first question is asking for the name of the
> >> > host, while the second question is asking for the name (FQDN) of the guest
> >> > vm which will be the hosted-engine. Is this correct?
> >> >
> >> > I'm also presuming that a) the first question should be the hostname of the
> >> > host, and b) that both the host and guest hostnames should resolve to IP
> >> > addresses.
> >> >
> >> > Thanks
> >> > Mark
> >> > _______________________________________________
> >> > Users mailing list
> >> > Users at ovirt.org
> >> > http://lists.ovirt.org/mailman/listinfo/users
> >> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
> 
> 
> 
> -- 
> Didi