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List:       openvz-users
Subject:    [Users] OpenVZ + VPS +dhclient
From:       esammons () vt ! edu (Eric L !  Sammons)
Date:       2005-11-19 21:09:24
Message-ID: 438444A2 () zathras
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My intent is to have my guests (VPS systems) be avaialble to the network 
without using iptables, SNAT, or NAT to forward packets.  I am using fedora so 
I have dhclient available to me and not dhcpcd, at least not with my package 
base.  Anyone know how to "grab" more than one IP address from a DHCP server 
using dhclient.  There is no -T option.

Thanks!


>===== Original Message From Kirill Korotaev <dev@sw.ru> =====
>Hello Eric,
>
>you are the first who wants such configuration :), but I suppose it is
>possible to do it if better understand what you are doing and what are
>your goals.
>
>Do you want your VPSs to be accessiable outside from the network?
>
>1. If the answer is "no", then you can setup any local IPs to VPSs and
>configure NAT in the host system. Thus your VPSs will have local IPs,
>will be able to connect to the network, but won't be accessiable from
>outside (though you can map one specific port of the host system to VPS
>port, i.e. can make VPS http server to appear on some specific port of
>host system IP).
>
>2. If the answer is "yes", then I suppose there is definetely something
>strange in your configuration, since DHCP can bring you arbitrary IP
>address and you will have to have some DNS tricks or otherwise you still
>won't be able to determine VPS IP easily  from the outside.
>But the good news is that it is possible to do either :)
>I have no dhclient on my machine, but dhcpcd I use here accepts -T
>option which allows (as follows from man page) to get multiple IPs
>without setuping them on the interface itself). So you will need to
>write some simple script which will reserve IP addresses from DHCP this
>way and configure them on VPS with `vzctl set <VPSID> --ipadd <IP>`
>command. Remember to delete previous VPS IP before adding a new one.
>
>Hope this will work for you,
>Kirill
>
>> I have installed fedora core 4, followed up with the install of OpenVZ.
>> Everything seems to work well; however, I have a need to use dhcp rather
>> than static IP addresses.  Can I configure a VPS to use dhclient rather
>> than a static ip address?  If so how?  I tried to:
>>
>> # vzctl enter ###
>> # dhclient venet0
>>
>> The guest was never able to contact the dhcp server.
>>
>> My VPS is also fedora core 4.
>>
>> Thanks!
>> eanxgeek
>>
>> _______________________________________________
>> Users mailing list
>> Users@openvz.org
>> https://openvz.org/mailman/listinfo/users
>>

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