On Mon, Jun 22, 2020 at 4:55 PM Gilboa Davara <[email protected]> wrote:
>
> On Mon, Jun 22, 2020 at 9:12 AM Yedidyah Bar David <[email protected]> wrote:
> >
> > I agree. Would you like to open a bug about this? It's not always easy
> > to know the root cause for the failure, nor to pass it through the
> > various components until it can reach the end-user.
>
> Sure. Happy to.
> Against which bugzilla component?

Perhaps first have a look at:

https://bugzilla.redhat.com/show_bug.cgi?id=1816002

and decide if to add a comment there, or create new bug (same
product/component).

>
> >
> >
> > Not sure it must abort. In principle, you could have supplied custom
> > ansible code to be ran inside the appliance, to add the items yourself
> > to /etc/hosts, or in theory it can also happen that you configured stuff
> > so that the host fails DNS resolution but the engine VM does not.
> >
> > It also asked you:
> >
> > 2020-06-21 10:49:18,562-0400 DEBUG otopi.plugins.otopi.dialog.human
> > dialog.__logString:204 DIALOG:SEND                 Add lines for the
> > appliance itself and for this host to /etc/hosts on the engine VM?
> > 2020-06-21 10:49:18,562-0400 DEBUG otopi.plugins.otopi.dialog.human
> > dialog.__logString:204 DIALOG:SEND                 Note: ensuring that
> > this host could resolve the engine VM hostname is still up to you
> > 2020-06-21 10:49:18,563-0400 DEBUG otopi.plugins.otopi.dialog.human
> > dialog.__logString:204 DIALOG:SEND                 (Yes, No)[No]
> >
> > And you accepted the default 'No'.
> >
> > Perhaps we should change the default to Yes.
>
> I must have missed it.
> In this case:
> A. It is essentially PBKAC.
> B. I believe that given the fact the problem was actually detected by
> the installer early on, I believe the installer should enforce having
> either hosts entry or working DNS setup. (Or at least show a big red
> flashing message saying: "Look, are you sure you want to set up a
> broken hosted engine VM and that cannot possibly resolve the host
> address and will uncertainly fail miserably once we try and deploy the
> hosted engine?")

I agree this makes sense, although as I said, it's not fully certain to fail.
The code emitting this warning is general - it's used both here and in
engine-setup.
I agree that here (in hosted-engine) it's more important.

>
> >
> > Of course - Yes is also a risk - a user not noticing it, then later on
> > changing the DNS, and not understanding why it "does not work"...
>
> Indeed.
>
> > In theory, you can examine the ansible code, and see what (not very
> > many) next steps it should have done if it didn't fail there, and do
> > that yourself (or decide that they are not important). In practice,
> > I'd personally deploy again cleanly, unless this is for a quick test
> > or something.
> >
> > Best regards,
> > --
>
> I'll simply clean up and redeploy.
> Hopefully after suffering a long string of PBKAC and DNS related
> failures, I'll finally have a working setup :)

Good luck!

>
> And again, many thanks for taking the time to assist me.
> I appreciate it!

Best regards,
-- 
Didi
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