Re: dynamic IP assignment on servers = brain damage
On 10/6/2012 7:43 AM, Miles Fidelman wrote:
> Tom H wrote:
>> On Fri, Oct 5, 2012 at 11:56 PM, Stan Hoeppner
>> <stan@hardwarefreak.com> wrote:
>>> This thread reinforces what experienced server admins round the world
>>> have known forever:
>>>
>>> DO NOT USE dynamic network address assignment on servers.
>>>
>>> The problem in this thread is but one of many that can/will result from
>>> using dynamic IP assignment with servers. If the OP had mentioned his
>>> use of dynamic IP up front he would have saved himself, and the rest of
>>> us, much time.
>> I've had to deal with VPS instances using what I call (in between my
>> ears!) semi-static ip settings: static but dynamically-assigned ip
>> addresses. The box gets an ip address via dhcp but it's always the
>> same, (I assume) based on the NIC's MAC address.
>>
>
> Which also comes up if one is net booting - the server has to pick up
> its IP address from the boot server, based on its MAC address.
But this is only a temporary address during PXE boot. You'd still
want/have a static IP in the OS image which goes live once the kernel is
initialized.
--
Stan
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