Hi,
On Thu, May 06, 2010 at 04:01:45PM +0200, Florian Haas wrote:
> On 2010-05-06 15:59, Dejan Muhamedagic wrote:
> > Hi,
> >
> > On Thu, May 06, 2010 at 03:47:21PM +0200, Florian Haas wrote:
> >> Brad,
>
> Apologies to Dag for addressing him as Brad. I was distracted.
>
> >> sorry, I'll have to drop this one too as it's doing the wrong thing.
> >>
> >> On 2010-05-06 01:49, Dag Stenstad wrote:
> > [...]
> >>> + fi
> >>> target_node=$(host $OCF_RESKEY_CRM_meta_migrate_target | \
> >>> awk '{ print $1; }')
> >>> + if [ ${target_node} = "Host" ]; then
> >>> + ocf_log error "Unable to resolve migrate target FQDN."
> >>> + ocf_log debug "This is probably due to a misconfigured
> >>> /etc/resolv.conf, missing"
> >>> + ocf_log debug "entries in /etc/hosts or a generally broken
> >>> DNS setup."
> >>> + exit $OCF_ERR_CONFIGURED
> >>> + fi
> >> Hmmm. I'm ambiguous about this part. What this means is that if we
> >> initiate migration, and we can't resolve the host name at that time, we
> >> don't just stop the migration and recover the resource through an
> >> in-place shutdown and restart, but we're forcing it away, without any VM
> >> migration, to a different host. I think this should be
> >> $OCF_ERR_GENERIC... what do others think?
> >
> > Agreed. The problem may even be temporary. I'd probably try to
> > avoid using host resolving in resources anyway.
>
> Yes, but in the use case Dag describes it makes good sense.
>
> So what is your suggestion? Loop on resolving and time out if it
> ultimately fails?
Yes, it seems preferable to do that. Even better would be to
catch the output (or exit code) of host(1) and see if the error
is intermittent or definite. At any rate, the exit code should be
OCF_ERR_GENERIC.
Cheers,
Dejan
> Cheers,
> Florian
>
>
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