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Should nova-network be installed into the same machine with nova-compute if network-manager is FlatDHCPManager

asked 2011-02-16 06:18:53 -0500

guanxiaohua2k6 gravatar image

I tried to use FlatDHCPManager as the network-manager. I succeeded when nova-network was installed into the same machine with nova-compute. But when the nova-network is installed into a different machine, the status of instance I started became running, but I couldn't ping or ssh to the instance from the machine with nova-network. And it wasn't due to security group's setting. I had add rules to the security group.

So I wonder that the nova-network should be installed into the same machine with nova-compute if the network-manager is FlatDHCPManager.

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answered 2011-02-21 09:50:15 -0500

vishvananda gravatar image

This was true in bexar. Code went in afterwards to setup a single card using flatdhcp: https://bugs.launchpad.net/nova/+bug/...

There have been a few other flatdhcp bugfixes recently as well. Trunk should work pretty well.

Vish

On Feb 20, 2011, at 10:26 PM, guan wrote:

Question #145567 on OpenStack Compute (nova) changed: https://answers.launchpad.net/nova/+q...

Status: Answered => Open

guan is still having a problem: Thank you for your reply.

I tried with flag flat_interface. But I still failed. Now the error was the status of instance was network. After I confirmed connectivity of the network, I found it couldn't be connected between nova-network and nova-compute and I found the only one network interface(other than lo) was used by bridge br100.

Here is my assumption. In order to install with FlatDHCPManager, I need two physical network card in both nova-compute and nova-network if I don't want to use vlan. Could anyone tell me whether it is right or not?

You received this question notification because you are a member of Nova Core, which is an answer contact for OpenStack Compute (nova).

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answered 2011-02-21 10:12:15 -0500

guanxiaohua2k6 gravatar image

Thanks Vish Ishaya, that solved my question.

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answered 2011-02-16 15:55:06 -0500

vishvananda gravatar image

You need to tell it which interface to bridge into by setting the flag --flat_interface

On Wednesday, February 16, 2011, guan question145567@answers.launchpad.net wrote:

New question #145567 on OpenStack Compute (nova): https://answers.launchpad.net/nova/+q...

I tried to use FlatDHCPManager as the network-manager. I succeeded when nova-network was installed into the same machine with nova-compute. But when the nova-network is installed into a different machine, the status of instance I started became running, but I couldn't ping or ssh to the instance from the machine with nova-network. And it wasn't due to security group's setting. I had add rules to the security group.

So I wonder that the nova-network should be installed into the same machine with nova-compute if the network-manager is FlatDHCPManager.

You received this question notification because you are a member of Nova Core, which is an answer contact for OpenStack Compute (nova).

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add a comment
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answered 2011-02-21 06:26:11 -0500

guanxiaohua2k6 gravatar image

Thank you for your reply.

I tried with flag flat_interface. But I still failed. Now the error was the status of instance was network. After I confirmed connectivity of the network, I found it couldn't be connected between nova-network and nova-compute and I found the only one network interface(other than lo) was used by bridge br100.

Here is my assumption. In order to install with FlatDHCPManager, I need two physical network card in both nova-compute and nova-network if I don't want to use vlan. Could anyone tell me whether it is right or not?

edit flag offensive delete link more
add a comment

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Asked: 2011-02-16 06:18:53 -0500

Seen: 78 times

Last updated: Feb 21 '11

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