openstack team mailing list archive

[Sébastien Han <han.sebastien@xxxxxxxxx>]

It's part of the operating system

# echo 1 > /proc/sys/net/ipv4/ip_forward

Then edit your /etc/sysctl.conf and uncomment net.ipv4.ip_forward=1 to
make this persistent after reboot.

Finally run --> # sysctl -p

That's all, cheers!


On Tue, Aug 7, 2012 at 11:50 PM, Leander Bessa Beernaert
<leanderbb@xxxxxxxxx> wrote:
> Is there a flag in the nova.conf file or is this something that needs to be
> done on the operating system?
>
>
> On Tue, Aug 7, 2012 at 8:26 PM, Sébastien Han <han.sebastien@xxxxxxxxx>
> wrote:
>>
>> Hi,
>>
>> If eth0 is connected to the public switch and if eth1 is connected to
>> the private switch you can enable the ipv4 forwarding on the compute
>> node. Thanks to this the VMs will have access to the outside world and
>> the packet will be routed from eth1 to eth0 :).
>>
>> Cheers!
>>
>> On Tue, Aug 7, 2012 at 5:18 PM, Leander Bessa Beernaert
>> <leanderbb@xxxxxxxxx> wrote:
>> > Hello,
>> >
>> > I have a question regarding the use of two network interfaces. According
>> > to
>> > the official documentation, one of the interfaces is used for public
>> > access
>> > and the other for internal access (inter-vm communication). What i'd
>> > like to
>> > know is how does an instance connect to the outside world (internet
>> > access)?
>> > Is it done through the switch connected to the private interface or the
>> > public interface?
>> >
>> > --
>> > Cumprimentos / Regards,
>> > Leander
>> >
>> > _______________________________________________
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>> >
>
>
>
>
> --
> Cumprimentos / Regards,
> Leander