<p class="MsoNormal"><span lang="EN-US">Hi everyone,</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">I'm running with Essex 2012.1, </span></p>
<p class="MsoNormal"><span lang="EN-US">and have some questions about the nova
network operation, </span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">1. Is it possible manually assigned IP
address to a launched instance, my situation is :</span></p>
<p class="MsoNormal"><span lang="EN-US">after instance boot up (OS: CentOS 6.2), I
changed the /etc/sysconfig/network-scripts/ifcfg-eth0 setting </span></p>
<p class="MsoNormal"><span lang="EN-US">from dhcp to static (the same subnet as
created by command : nova-manage create network....), and restart the network
service, </span></p>
<p class="MsoNormal"><span lang="EN-US">And then I couldn't ssh or ping the
instance from other server with the same subnet.</span></p>
<p class="MsoNormal"><span lang="EN-US">What is the problem ? I checked the
iptables policies on the compute host, and find nothing about the DROP packets.<br>
I also tried to change the DB record from nova.fixed_ips table and libvirt.xml of
the instance directory, then reboot the instance, I can see the instance get new IP from DHCP, but still not worked(can't ping & ssh).</span></p>
<p class="MsoNormal"><span lang="EN-US">I used FlatDHCP as my network
manager.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">2. According to the first question, I have
another requirement to set up a loopback IP address (lo:0) on the running
instance, after setting completed,I couldn't ping or ssh the loopback IP
from the same subnet, and I tried to set a alias IP address with eth0:0, but still
not get worked.</span></p>
<p class="MsoNormal"><span lang="EN-US">Any ideas with this ?</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">3. Is there any way to use 2 NICs with
different subnets on instances? I want to separate the network traffic. </span></p>
<p class="MsoNormal"><span lang="EN-US">Now I'm running with one bridged interface
(br100), and it works well. In order to backup the large log files,</span></p>
<p class="MsoNormal"><span lang="EN-US">I'm planing to use 2 NICs for the compute
hosts, I want use 2 vNICs on instance, one for web service and the other for
log backup,</span></p>
<p class="MsoNormal"><span lang="EN-US">I think I should create a new network for
the second bridged interface, but I can't find any document to guild me.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">List my nova.conf below </span></p>
<p class="MsoNormal"><span lang="EN-US">==========================================</span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--dhcpbridge_flagfile=/etc/nova/nova.conf</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--dhcpbridge=/usr/bin/nova-dhcpbridge</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--logdir=/var/log/nova</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--state_path=/var/lib/nova</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--lock_path=/var/lock/nova</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--allow_admin_api=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--use_deprecated_auth=false</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--auth_strategy=keystone</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--scheduler_driver=nova.scheduler.simple.SimpleScheduler</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--s3_host=172.19.7.1</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--ec2_host=172.19.7.1</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--rabbit_host=172.19.7.1</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--cc_host=172.19.7.1</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--nova_url=<a href="http://172.19.7.1:8774/v1.1/" target="_blank"><span style="color:#1155cc">http://172.19.7.1:8774/v1.1/</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> #--routing_source_ip=172.19.7.1</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--glance_api_servers=<a href="http://172.19.7.1:9292/" target="_blank"><span style="color:#1155cc">172.19.7.1:9292</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> --image_service=nova.image.glance.GlanceImageService</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">#--iscsi_ip_prefix=192.168.22</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--sql_connection=mysql://<a href="http://nova:nova@172.19.7.1/nova" target="_blank"><span style="color:#1155cc">nova:nova@172.19.7.1/nova</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> --ec2_url=<a href="http://172.19.7.1:8773/services/Cloud" target="_blank"><span style="color:#1155cc">http://172.19.7.1:8773/services/Cloud</span></a> </span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--keystone_ec2_url=<a href="http://172.19.7.1:5000/v2.0/ec2tokens" target="_blank"><span style="color:#1155cc">http://172.19.7.1:5000/v2.0/ec2tokens</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> --api_paste_config=/etc/nova/api-paste.ini</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--libvirt_type=kvm</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--libvirt_use_virtio_for_bridges=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--start_guests_on_host_boot=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--resume_guests_state_on_host_boot=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">#--vnc_enabled=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">--novnc_enabled=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US">#--vncproxy_url=<a href="http://172.19.7.1:6080/vnc_auto.html" target="_blank"><span style="color:#1155cc">http://172.19.7.1:6080/vnc_auto.html</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US"> <span style="color:blue">#--vnc_console_proxy_url=<a href="http://172.19.7.1:6080/" target="_blank"><span style="color:#1155cc">http://172.19.7.1:6080</span></a></span></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> --novncproxy_base_url=<a href="http://172.19.7.1:6080/vnc_auto.html" target="_blank"><span style="color:#1155cc">http://172.19.7.1:6080/vnc_auto.html</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> --xvpvncproxy_base_url=<a href="http://172.19.7.1:6081/console" target="_blank"><span style="color:#1155cc">http://172.19.7.1:6081/console</span></a></span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> #--vncserver_listen=172.19.7.1</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">#--vncserver_proxyclient_address=172.19.7.1</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--vncserver_listen=0.0.0.0</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--vncserver_proxyclient_address=0.0.0.0</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:blue" lang="EN-US"> </span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US"># network specific settings </span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--network_manager=nova.network.manager.FlatDHCPManager</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">#--network_manager=nova.network.quantum.manager.QuantumManager</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">#--quantum_connection_host=172.19.7.1</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">#--quantum_connection_port=9696</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--public_interface=eth0</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--flat_interface=eth0</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--flat_network_bridge=br100</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--fixed_range=<a href="http://172.19.7.0/24" target="_blank">172.19.7.0/24</a></span></p>
<p class="MsoNormal"><span style="color:#3333ff" lang="EN-US"> --network_size=254</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--flat_network_dhcp_start=172.19.7.41</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--multi_host</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--flat_injected=False</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--force_dhcp_release</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--iscsi_helper=tgtadm</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--connection_type=libvirt</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--root_helper=sudo nova-rootwrap</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">#--verbose</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">#--verbose=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--verbose=false</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--libvirt_xml_template=/usr/share/pyshared/nova/virt/libvirt.xml.template</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--allow_resize_to_same_host=true</span><span lang="EN-US"></span></p>
<p class="MsoNormal" style><span style="color:#3333ff" lang="EN-US">--max_cores=30</span><span lang="EN-US"></span></p>
<p class="MsoNormal"><span lang="EN-US">=================================================</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<h3 style="margin:0cm;margin-bottom:.0001pt;text-overflow:ellipsis"><span style="font-family:"Arial","sans-serif";font-weight:normal" lang="EN-US">if I misunderstand
something, please correct me, thanks.</span></h3>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">-Jimmy</span></p>