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From chris snow <chsnow...@gmail.com>
Subject Re: Internal DNS confusion
Date Tue, 28 Jan 2014 07:17:41 GMT
Thanks for the answers Shanker. Some more questions ...

Are internal DNS lookups performed only by the system vms?  If no,
what other parts of cloudstack perform internal DNS lookups?  For
example, does Management Server perform internal DNS lookups?

I'm trying to figure out 'when' I need to add new records to the
internal DNS server.

I guess one way for me to understand when I need to add a host record
to the internal DNS is by knowing what which parts of the Cloudstack
admin interface have fields that require a corresponding internal DNS
record.  For example:

   Network > Add Guest Network > Network Domain
   Domains > Add Domain > Network Domain

Does each network domain above require an entry to be added into the
internal DNS?  Are there any other places in the admin UI that require
records to be added to the internal DNS server?

On Tue, Jan 28, 2014 at 3:52 AM, Shanker Balan
<shanker.balan@shapeblue.com> wrote:
> Comments inline.
>
> On 28-Jan-2014, at 1:21 am, chris snow <chsnow123@gmail.com> wrote:
>
>> When creating a new zone, I have to enter the address for Internal DNS
>> Servers.  Extract from the Cloudstack installation manual:
>>
>> "Internal DNS 1 and Internal DNS 2. These are DNS servers for use by
>> system VMs in the zone (these are VMs used by CloudStack itself, such
>> as virtual routers, console proxies, and Secondary Storage VMs.).”
>
> The internal DNS server is usually the corporate DNS servers that
> provide “internal” DNS services for your LAN. Usually, these are RFC1918 IPs
> which is why its hosted “internally”.
>
>
>> Question 1: Who manages the Internal DNS? Is an Internal DNS server
>> setup and managed by me, or is it setup and managed by Cloudstack?
>
> You (or your IT team).
>
>
>> Question 2: If Internal DNS is setup and managed by me, how should it be setup?
>
> set it up any way you look. As long as the internal DNS server can
> resolve the hostname to IP addresses, you should be fine.
>
>
>> Question 3: If it is setup and managed by Cloudstack, when did it get
>> setup, and  how can I find out what address Cloudstack is using for
>> this server?
>
> Its not managed by cloudstack. Most of the time, your internal and
> external DNS settings would be your corporate DNS server.
>
> If a public DNS server can resolve IP addresses for hosts in your LAN,
> you can use any public DNS server as your internal and external DNS resolver.
>
> Hope that makes sense.
>
>
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