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<p class=MsoNormal><span lang=EN-US>Hi ALL <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I build a two host’s openstack environment with
ubuntu 12.04. One is For controller and another is for compute-node .<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I meet a problem is : The vm in
compute-node cannot be assign fixed IP . but the vm in controller can be assign
fixed IP .<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>When I use tcpdump to trace the dhcp
request/response , I found this :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>On compute-node :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>~# tcpdump -i br100 -n port 67 or 68<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>tcpdump: verbose output suppressed, use -v
or -vv for full protocol decode<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>listening on br100, link-type EN10MB
(Ethernet), capture size 65535 bytes<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:46.794501 IP 0.0.0.0.68 >
255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:50:6d:1c, length 280<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:49.799593 IP 0.0.0.0.68 >
255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:50:6d:1c, length 280<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:52.803964 IP 0.0.0.0.68 >
255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:50:6d:1c, length 280<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>~# tcpdump -i br100 -n port 67 or 68<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>tcpdump: verbose output suppressed, use -v
or -vv for full protocol decode<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>listening on br100, link-type EN10MB
(Ethernet), capture size 65535 bytes<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:47.995389 IP 0.0.0.0.68 >
255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:50:6d:1c, length 280<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:47.995785 IP 192.168.4.1.67 >
192.168.4.3.68: BOOTP/DHCP, Reply, length 309<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:51.000454 IP 0.0.0.0.68 >
255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:50:6d:1c, length 280<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:51.000911 IP 192.168.4.1.67 >
192.168.4.3.68: BOOTP/DHCP, Reply, length 309<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:54.004840 IP 0.0.0.0.68 >
255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:50:6d:1c, length 280<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>01:13:54.005196 IP 192.168.4.1.67 >
192.168.4.3.68: BOOTP/DHCP, Reply, length 309<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>From above , I can found : the vm can send
udp request to dnsmasq-server which on controller. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>BUT when the controller response the
request . the compute-node cannot get it . This is why vm cannot be assign fixed
IP on compute-node ,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>But on Controller vm can be assign fixed IP
.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Even though I know where is going wrong , But
I cannot fixed it -_-</span><span lang=EN-US style='font-size:9.0pt'>#</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Could anyone tell me how to fixed this
problem ? <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks In advance .<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The follow is my configuration .<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The part of nova.conf as follow :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US># network specific settings<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--network_manager=nova.network.manager.FlatDHCPManager<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--public_interface=br100<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--flat_interface=eth0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--flat_network_bridge=br100<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--fixed_range=192.168.4.0/27<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--floating_range=192.168.7.208/28<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--network_size=32<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--flat_injected=false<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>--force_dhcp_release<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The network config :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The controller :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>auto lo<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>iface lo inet loopback<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>auto br100<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>iface br100 inet static<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
bridge_ports eth0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
bridge_stp off<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> bridge_maxwait 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
bridge_fd 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> address 192.168.7.151<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> netmask 255.255.255.224<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> gateway 192.168.7.158<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The compute node :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>auto lo<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>iface lo inet loopback<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>auto br100<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>iface br100 inet static<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
bridge_ports eth0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
bridge_stp off<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> bridge_maxwait 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
bridge_fd 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> address 192.168.7.152<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> netmask 255.255.255.224<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> gateway 192.168.7.158<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:9.0pt;color:#1F497D'>David(</span></b><b><span
style='font-size:9.0pt;font-family:宋体;color:#1F497D'>李跃洲</span></b><b><span
lang=EN-US style='font-size:9.0pt;color:#1F497D'>)<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:9.0pt;color:#1F497D'>E-MAIL:
yuezhou.li@hisoft.com<o:p></o:p></span></b></p>
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