<br>Hi everyone,<div><br></div><div>I'm running with Essex 2012.1, </div><div>and have some questions about the nova network operation, <br></div><div><br></div><div>1. Is it possible manually assigned IP address to a launched instance, my situation is :</div>
<div>after instance boot up (OS: CentOS 6.2), I changed the /etc/sysconfig/network-scripts/ifcfg-eth0 setting </div><div>from dhcp to static (the same subnet as created by command : nova-manage create network....), and restart the network service, </div>
<div>And then I couldn't ssh or ping the instance from other server with the same subnet.</div><div>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 changed the record from nova.fixed_ips table and libvirt.xml of the instance, then reboot the instance, still not worked.<br></div>
<div>I used FlatDHCP as my network manager.</div><div><br></div><div>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
was 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.</div><div>Any ideas with this ?</div><div><br></div><div>3. Is there any way to use 2 NICs with different subnets on instances? I want to separate the network traffic. </div>
<div>Now I'm running with one bridged interface (br100), and it works well. In order to backup the large log files,</div><div>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,</div>
<div>I think I should create a new network for the second bridged interface, but I can't find any document to guild me.</div><div><br></div><div>List my nova.conf below </div><div>==========================================</div>
<div><p class="MsoNormal"><span style="color:blue" lang="EN-US">--dhcpbridge_flagfile=/etc/nova/nova.conf</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--dhcpbridge=/usr/bin/nova-dhcpbridge</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--logdir=/var/log/nova</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--state_path=/var/lib/nova</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--lock_path=/var/lock/nova</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--allow_admin_api=true</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--use_deprecated_auth=false</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--auth_strategy=keystone</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--scheduler_driver=nova.scheduler.simple.SimpleScheduler</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--s3_host=172.19.7.1</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--ec2_host=172.19.7.1</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--rabbit_host=172.19.7.1</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--cc_host=172.19.7.1</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--nova_url=<a href="http://172.19.7.1:8774/v1.1/" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:8774/v1.1/</a></span></p>
<div style="display:inline-block;width:16px;height:16px"> </div>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">#--routing_source_ip=172.19.7.1</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--glance_api_servers=<a href="http://172.19.7.1:9292/" style="color:rgb(17,85,204)" target="_blank">172.19.7.1:9292</a></span></p>
<div style="display:inline-block;width:16px;height:16px"> </div>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--image_service=nova.image.glance.GlanceImageService</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">#--iscsi_ip_prefix=192.168.22</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--sql_connection=mysql://<a href="http://nova:nova@172.19.7.1/nova" style="color:rgb(17,85,204)" target="_blank">nova:nova@172.19.7.1/nova</a></span></p><div style="display:inline-block;width:16px;height:16px">
</div>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--ec2_url=<a href="http://172.19.7.1:8773/services/Cloud" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:8773/services/Cloud</a></span></p><div style="display:inline-block;width:16px;height:16px">
</div>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--keystone_ec2_url=<a href="http://172.19.7.1:5000/v2.0/ec2tokens" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:5000/v2.0/ec2tokens</a></span></p>
<div style="display:inline-block;width:16px;height:16px"> </div>
<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></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--libvirt_use_virtio_for_bridges=true</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">--start_guests_on_host_boot=true</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--resume_guests_state_on_host_boot=true</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">#--vnc_enabled=true</span></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">--novnc_enabled=true</span></p><p class="MsoNormal"><span style="color:blue" lang="EN-US">#--vncproxy_url=<a href="http://172.19.7.1:6080/vnc_auto.html" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:6080/vnc_auto.html</a></span></p>
<div style="display:inline-block;width:16px;height:16px"> </div>
<p class="MsoNormal"><span style="color:blue" lang="EN-US">#--vnc_console_proxy_url=<a href="http://172.19.7.1:6080/" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:6080</a></span></p><div style="display:inline-block;width:16px;height:16px">
</div><p class="MsoNormal">
<span style="color:blue" lang="EN-US">--novncproxy_base_url=<a href="http://172.19.7.1:6080/vnc_auto.html" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:6080/vnc_auto.html</a></span></p><div style="display:inline-block;width:16px;height:16px">
</div><p class="MsoNormal">
<span style="color:blue" lang="EN-US">--xvpvncproxy_base_url=<a href="http://172.19.7.1:6081/console" style="color:rgb(17,85,204)" target="_blank">http://172.19.7.1:6081/console</a></span></p><div style="display:inline-block;width:16px;height:16px">
</div><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></p>
<p class="MsoNormal"><span style="color:blue" lang="EN-US"> </span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff"># network specific settings</font></span></p><p class="MsoNormal">
<span lang="EN-US"><font color="#3333ff"> </font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--network_manager=nova.network.manager.FlatDHCPManager</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">#--network_manager=nova.network.quantum.manager.QuantumManager</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">#--quantum_connection_host=172.19.7.1</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">#--quantum_connection_port=9696</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--public_interface=eth0</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--flat_interface=eth0</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--flat_network_bridge=br100</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--fixed_range=<a href="http://172.19.7.0/24" target="_blank">172.19.7.0/24</a></font></span></p><div style="display:inline-block;width:16px;height:16px"><font color="#3333ff"> </font></div>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--network_size=254</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--flat_network_dhcp_start=172.19.7.41</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--multi_host</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--flat_injected=False</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--force_dhcp_release</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--iscsi_helper=tgtadm</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--connection_type=libvirt</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--root_helper=sudo nova-rootwrap</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">#--verbose</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">#--verbose=true</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--verbose=false</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--libvirt_xml_template=/usr/share/pyshared/nova/virt/libvirt.xml.template</font></span></p><p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--allow_resize_to_same_host=true</font></span></p>
<p class="MsoNormal"><span lang="EN-US"><font color="#3333ff">--max_cores=30</font></span></p></div><div>=================================================</div><div><br></div><div><h3 style="padding:0px;margin:0px;font-weight:normal;text-overflow:ellipsis;white-space:nowrap;font-family:arial,sans-serif">
if I misunderstand something, please correct me, thanks.</h3><p>-Jimmy<br></p></div><br>