Open Stack

In the osapi name from the request is always converted to display_name. There is no logic for appending a launch_index, although I also remember that something like that was done before.

Code for generating hostname is here:

https://github.com/openstack/nova/blob/master/nova/compute/api.py#L653

The display name is sanitized here:

https://github.com/openstack/nova/blob/master/nova/utils.py#L1076

There is no per tenant uniqueness check, although that might be useful, as well as the option to add .tenant_name onto the hostname.

Vish

On Aug 30, 2012, at 8:06 AM, "Day, Phil" <philip.day at hp.com> wrote:

> Hi Folks,
>  
> I’m trying to understand the difference between “display_name” and “hostname” in the instances table, and struggling a bit to track their use though the code.   It looks to me as if:
>  
>                 display_name is always the name specified by the user
>  
>                 hostname is a sanitized version of this (always converted to lowercase, etc)
>  
>  
> Is that correct, and if so:
>  
> -          Is there anything which makes sure that the sanitized hostname is always unique for a particular customer (or are they meant to understand and anticipate the consequences of this sanitization)
>  
> -          How is the hostname set when creating more than one instance at the same time (I thought I’d remembered seeing something in the code sometime back to add the an integer to the hostname, but I can’t seem to see anything in the current code that does this)
>  
>  
> Thanks
> Phil
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