On Dec 5, 2012, at 7:19 PM, Lei Zhang <zhang.lei....@gmail.com> wrote:
> thank you very much, Vishvananda. > But I am still confused about the 192.168.0.0/24 and the 10.0.0.0/8 ip. What > means by "The addresses will be moved on to the bridge". It means the > 192.168.0.0/8 will be disappear? In my opinion, the bridged NIC (eth1) > should be worked under promiscuous mode and its IP should be 0.0.0.0. So the > eth1 should not own any IP. No moved to the bridge means that the ip will move from eth1 to the bridge eth1 -- no ip address br100 192.168.0.2 10.0.0.2 (for example). Nova moves the eth1 ip automatically when it creates the bridge if eth1 has an ip. Vish > But if the 192 address doesn't exist, how the compute-note communicate with > each other? Through the eth0? I have no idea. > > > On Thu, Dec 6, 2012 at 3:12 AM, Vishvananda Ishaya <vishvana...@gmail.com> > wrote: > > On Dec 5, 2012, at 1:53 AM, Lei Zhang <zhang.lei....@gmail.com> wrote: > >> Hi all, >> >> I am reading the >> http://docs.openstack.org/trunk/openstack-compute/admin/content/libvirt-flat-dhcp-networking.html, >> I got the following deploy architecture. But there are several that I am >> confused. >> >> How and why 192.168.0.0/24 ip range exist? It is necessary or not? The eth1 >> on the each physical machine own two ip(10.0.0.0/24 and 192.168.0.0/24)? Is >> that possible? In the nova-compute, the eth1 should be bridged by br100. the >> eth1 should not own any IP address, right? > The addresses will be moved on to the bridge. The point of having an ip > address is so that things like rabbit and mysql can communicate over a > different set of addresses than the guest network. Usually this would be done > on a separate eth device (eth2) or vlan, but I was trying to keep > > >> In a better way, should we separate the nova-network/eth0 to the internet >> public switch for access the internet by all VMs. and the nova-compute/eth0 >> should be bind to a internal switch for admin access use. Is it right? > > Ideally there are three eth devices / vlans a) public (for 99 adddresses in > diagram) b) management (for 192 addresses in diagram) c) guest (for 10 > addresses in diagram) > >> >> -- >> Lei Zhang >> >> Blog: http://jeffrey4l.github.com >> twitter/weibo: @jeffrey4l >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : openstack@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp > > > > > -- > Lei Zhang > > Blog: http://jeffrey4l.github.com > twitter/weibo: @jeffrey4l >
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