[Openstack] When are hostnames okay and when are ip addresses required?

Matt Joyce matt.joyce at cloudscaling.com
Fri Jun 29 00:11:55 UTC 2012


https://review.openstack.org/9153   now as a review.

On Thu, Jun 28, 2012 at 5:08 PM, Nathanael Burton <
nathanael.i.burton at gmail.com> wrote:

> While at a minimum this is a doc bug, I would suggest we do one of the
> following:
>
> 1. Rename existing parameters that require the value to be an ip address
> such as 'metadata_host' to 'metadata_host_ip' so that it is more obvious.
> Make this a standard for all config parameters.
>
> 2. I agree with Lars, it would be even better if it was seamless
> (regardless of what was set, host or IP) and where we require IP addresses,
> do resolution.
>
> Nate
> On Jun 28, 2012 7:55 PM, "Matt Joyce" <matt.joyce at cloudscaling.com> wrote:
>
>> +1
>>
>> On Thu, Jun 28, 2012 at 2:27 PM, Vishvananda Ishaya <
>> vishvananda at gmail.com> wrote:
>>
>>> those are supposed to be ip addresses, so I would go with doc bug now
>>> unless there is a good reason to change it.
>>>
>>> Vish
>>>
>>> On Jun 28, 2012, at 12:00 PM, Lars Kellogg-Stedman wrote:
>>>
>>> > Maybe I sent this out too late at night; I think it slipped below
>>> > everyone's radar.  I'm interested in whether or not people think this
>>> > behavior is a functional bug, or maybe just a documentation bug:
>>> >
>>> >> I ran into an issue earlier today where I had metadata_host set to the
>>> >> *hostname* of our controller.  This got stuffed into an iptables rule
>>> >> as...
>>> >>
>>> >>  -d os-controller.int.seas.harvard.edu/32
>>> >>
>>> >> ...which promptly failed.  Setting this to an ip address fixed this
>>> >> particular error, leading me to wonder:
>>> >>
>>> >> - Is this expected behavior?
>>> >> - Should I always use ip addresses for *_host values?
>>> >> - Is this a bug?
>>> >> - Should linux_net.py resolve hostnames?
>>> >
>>> > --
>>> > Lars Kellogg-Stedman <lars at seas.harvard.edu>       |
>>> > Senior Technologist                                |
>>> http://ac.seas.harvard.edu/
>>> > Academic Computing                                 |
>>> http://code.seas.harvard.edu/
>>> > Harvard School of Engineering and Applied Sciences |
>>> >
>>> > _______________________________________________
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>>>
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>>
>>
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