Any advise how to get access to internet from instances? about devstack-vm HOT 6 CLOSED

Unfortunately, I don't think there's an easy way to configure things to allow an instance to connect out to the internet. This is because the VirtualBox network interface associated with the floating IPs is associated with a vagrant "private network", so there are no rules for routing packets out to the internet.

You could configure Vagrant to use bridged networking mode, and that way the virtual machine running devstack would be connected directly to your local network. However, then you need to make sure that the subnet you specify in the vagrantfile matches the subnet of your local network (you would need to change this from 172.24.4.225/27 to whatever your local network uses), and you also need to make sure that OpenStack doesn't hand out an IP that's already used on your subnet.

The alternative is to configure your host operating system to NAT the connections out. Configuring this is non-trivial and depends on what operating system you are running on the host.

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Thx for reply, I had some experiments with NAT on my Ubuntu, so I'll keep moving forward with that, I thought that it's common problem :)

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Note that the newest release of VirtualBox (4.3) now has experimental support for NAT. Might be able to use this to allow instances to connect out the Internet.

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If you have an up-to-date copy of vagrant and can get access to the internet from the network node through eth0, then the solution is just to tell iptables to masquerade traffic passing out through that interface.

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

At least, this fixed the problem for me. YMMV.

I haven't yet figured out how to make it so you can connect to VMS from the controller node in virtualbox.

from devstack-vm.

Running this on my host machine solved the problem

echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE

Lorin you can add it to README:)
Thanks all!

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README updated at 6db0232

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