<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Dec 5, 2012, at 1:53 AM, Lei Zhang <<a href="mailto:zhang.lei.fly@gmail.com">zhang.lei.fly@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div class="markdown-here-wrapper" id="markdown-here-wrapper-64078" style="font-size:1em;font-family:Helvetica,arial,freesans,clean,sans-serif;color:rgb(34,34,34);background-color:rgb(255,255,255);border:none;line-height:1.2"><p style="margin:1em 0px">Hi all,
</p><p style="margin:1em 0px">I am reading the <a href="http://docs.openstack.org/trunk/openstack-compute/admin/content/libvirt-flat-dhcp-networking.html" style="color:rgb(51,51,238);text-decoration:initial">http://docs.openstack.org/trunk/openstack-compute/admin/content/libvirt-flat-dhcp-networking.html</a>, I got the following deploy architecture. But there are several that I am confused.
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<li style="margin:1em 0px">How and why <a href="http://192.168.0.0/24">192.168.0.0/24</a> ip range exist? It is necessary or not? The eth1 on the each physical machine own two ip(<a href="http://10.0.0.0/24">10.0.0.0/24</a> and <a href="http://192.168.0.0/24">192.168.0.0/24</a>)? Is that possible? In the nova-compute, the eth1 should be bridged by br100. the eth1 should not own any IP address, right?</li></ul></div></blockquote>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<br><br><blockquote type="cite"><div class="markdown-here-wrapper" id="markdown-here-wrapper-64078" style="font-size:1em;font-family:Helvetica,arial,freesans,clean,sans-serif;color:rgb(34,34,34);background-color:rgb(255,255,255);border:none;line-height:1.2"><ul style="padding-left:2em;margin:1em 0px">
<li style="margin:1em 0px">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? </li></ul></div></blockquote><div>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)</div><br><blockquote type="cite"><div class="markdown-here-wrapper" id="markdown-here-wrapper-64078" style="font-size: 1em; font-family: Helvetica, arial, freesans, clean, sans-serif; color: rgb(34, 34, 34); background-color: rgb(255, 255, 255); border: none; line-height: 1.2; position: static; z-index: auto; "><ul style="padding-left:2em;margin:1em 0px">
</ul><p style="margin:1em 0px"><img src="http://docs.openstack.org/trunk/openstack-compute/admin/content/figures/flatdchp-net.jpg"></p>
</div><div class="markdown-here-signature">-- <br><div><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse">Lei Zhang</span></div><div><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"><br>
</span></div><div><font face="arial, sans-serif">Blog: <a href="http://jeffrey4l.github.com/" target="_blank">http://jeffrey4l.github.com</a></font></div><div>twitter/weibo: @jeffrey4l</div><br>
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