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Today's Topics:
1. Managing host reservations dynamically? (Brian Rak)
2. Re: Managing host reservations dynamically? (Angelo Failla)
----------------------------------------------------------------------
Message: 1
Date: Fri, 27 Nov 2015 11:43:06 -0500
From: Brian Rak <[email protected]>
To: [email protected]
Subject: [kea-dev] Managing host reservations dynamically?
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
Is there any way I can set DHCPv4 mac -> ip address reservations
dynamically? I have an environment where I pre-configure any possible
DHCP lease, but these configurations can come and go at any time
(providing DHCP to virtual machines - our management systems dictate
which IP a particular VM uses, but the easiest way of configuring the VM
is with DHCP).
I looked at the control-socket feature, but this seems to be limited to
just statistics related commands (at least as of 0.9.2).
One option I might have is to use the 'Host Reservations in MySQL'
feature that might be in 1.0, but I'd really prefer to not have to run a
bunch of MySQL servers in order to achieve this. (management of all the
necessary MySQL instances would be time consuming).
It looks like my best bet right now is to just modify the Kea config
file and issue a reload. Is there any downside to doing this regularly?
Is there a better approach here?
------------------------------
Message: 2
Date: Fri, 27 Nov 2015 18:14:39 +0000
From: Angelo Failla <[email protected]>
To: Brian Rak <[email protected]>, "[email protected]"
<[email protected]>
Subject: Re: [kea-dev] Managing host reservations dynamically?
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
We did that in Facebook:
https://www.usenix.org/conference/srecon15europe/program/presentation/failla
But it requires C++ knowledge to write a hook library that can be loaded
dynamically by the server.
--
Angelo Failla
Cluster Infrastructure - Dublin
[email protected]
On 11/27/15, 4:43 PM, "[email protected] on behalf of Brian Rak"
<[email protected] on behalf of [email protected]> wrote:
>Is there any way I can set DHCPv4 mac -> ip address reservations
>dynamically? I have an environment where I pre-configure any possible
>DHCP lease, but these configurations can come and go at any time
>(providing DHCP to virtual machines - our management systems dictate
>which IP a particular VM uses, but the easiest way of configuring the VM
>is with DHCP).
>
>I looked at the control-socket feature, but this seems to be limited to
>just statistics related commands (at least as of 0.9.2).
>
>One option I might have is to use the 'Host Reservations in MySQL'
>feature that might be in 1.0, but I'd really prefer to not have to run a
>bunch of MySQL servers in order to achieve this. (management of all the
>necessary MySQL instances would be time consuming).
>
>It looks like my best bet right now is to just modify the Kea config
>file and issue a reload. Is there any downside to doing this regularly?
>
>Is there a better approach here?
>_______________________________________________
>kea-dev mailing list
>[email protected]
>https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.isc.org_mailman_listinfo_kea-2Ddev&d=CwICAg&c=5VD0RTtNlTh3ycd41b3MUw&r=XQHjLQh2eTTW8a0c8kaZ9Q&m=keoXAo78o1Fy5ZgpR4SQX31LrBKJAAXSVWZCU7Fmgc8&s=T3Nv_flOOgTCEuC_7mEAfADd3PX2bsAbbU482JSbVA4&e=
>
------------------------------
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End of kea-dev Digest, Vol 20, Issue 14
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