Hi Meena, Thanks for your reply, this solve my third question. :D Wait for someone who could help with the First 2 questions. how to change the IP address after instance has launched and get an address from dnsmasq ? and how to bind a loopback IP address (lo:0) or an alias IP address (eth0:0) ?
I just started to test Quantum + Melange, don't know if it helps with my questions. Thanks, -Jimmy 2012/4/26 <raja.me...@wipro.com> > Hi ,**** > > ** ** > > This link should help you on the multinic feature .**** > > ** ** > > > http://docs.openstack.org/trunk/openstack-compute/admin/content/using-multi-nics.html#using-multiple-nics-usage > **** > > ** ** > > ** ** > > ** ** > > Thanks**** > > Meena Raja**** > > ** ** > > ** ** > > *From:* openstack-bounces+raja.meena=wipro....@lists.launchpad.net[mailto: > openstack-bounces+raja.meena=wipro....@lists.launchpad.net] *On Behalf Of > *Jimmy Tsai > *Sent:* Thursday, April 26, 2012 2:52 PM > *To:* openstack@lists.launchpad.net; Jimmy > *Subject:* [Openstack] questions about IP addressing and network config*** > * > > ** ** > > Hi everyone,**** > > **** > > I'm running with Essex 2012.1, **** > > and have some questions about the nova network operation, **** > > **** > > 1. Is it possible manually assigned IP address to a launched instance, my > situation is :**** > > after instance boot up (OS: CentOS 6.2), I changed the > /etc/sysconfig/network-scripts/ifcfg-eth0 setting **** > > from dhcp to static (the same subnet as created by command : nova-manage > create network....), and restart the network service, **** > > And then I couldn't ssh or ping the instance from other server with the > same subnet.**** > > What is the problem ? I checked the iptables policies on the compute > host, and find nothing about the DROP packets. > 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). > **** > > I used FlatDHCP as my network manager.**** > > **** > > 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.** > ** > > Any ideas with this ?**** > > **** > > 3. Is there any way to use 2 NICs with different subnets on instances? I > want to separate the network traffic. **** > > Now I'm running with one bridged interface (br100), and it works well. In > order to backup the large log files,**** > > 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,**** > > I think I should create a new network for the second bridged interface, > but I can't find any document to guild me.**** > > **** > > List my nova.conf below **** > > ==========================================**** > > --dhcpbridge_flagfile=/etc/nova/nova.conf**** > > --dhcpbridge=/usr/bin/nova-dhcpbridge**** > > --logdir=/var/log/nova**** > > --state_path=/var/lib/nova**** > > --lock_path=/var/lock/nova**** > > --allow_admin_api=true**** > > --use_deprecated_auth=false**** > > --auth_strategy=keystone**** > > --scheduler_driver=nova.scheduler.simple.SimpleScheduler**** > > --s3_host=172.19.7.1**** > > --ec2_host=172.19.7.1**** > > --rabbit_host=172.19.7.1**** > > --cc_host=172.19.7.1**** > > --nova_url=http://172.19.7.1:8774/v1.1/**** > > #--routing_source_ip=172.19.7.1**** > > --glance_api_servers=172.19.7.1:9292**** > > --image_service=nova.image.glance.GlanceImageService**** > > #--iscsi_ip_prefix=192.168.22**** > > --sql_connection=mysql://nova:nova@172.19.7.1/nova**** > > --ec2_url=http://172.19.7.1:8773/services/Cloud **** > > --keystone_ec2_url=http://172.19.7.1:5000/v2.0/ec2tokens**** > > --api_paste_config=/etc/nova/api-paste.ini**** > > --libvirt_type=kvm**** > > --libvirt_use_virtio_for_bridges=true**** > > --start_guests_on_host_boot=true**** > > --resume_guests_state_on_host_boot=true**** > > #--vnc_enabled=true**** > > --novnc_enabled=true**** > > #--vncproxy_url=http://172.19.7.1:6080/vnc_auto.html**** > > **** > > #--vnc_console_proxy_url=http://172.19.7.1:6080**** > > --novncproxy_base_url=http://172.19.7.1:6080/vnc_auto.html**** > > --xvpvncproxy_base_url=http://172.19.7.1:6081/console**** > > #--vncserver_listen=172.19.7.1**** > > #--vncserver_proxyclient_address=172.19.7.1**** > > --vncserver_listen=0.0.0.0**** > > --vncserver_proxyclient_address=0.0.0.0**** > > **** > > # network specific settings **** > > --network_manager=nova.network.manager.FlatDHCPManager**** > > #--network_manager=nova.network.quantum.manager.QuantumManager**** > > #--quantum_connection_host=172.19.7.1**** > > #--quantum_connection_port=9696**** > > --public_interface=eth0**** > > --flat_interface=eth0**** > > --flat_network_bridge=br100**** > > --fixed_range=172.19.7.0/24**** > > --network_size=254**** > > --flat_network_dhcp_start=172.19.7.41**** > > --multi_host**** > > --flat_injected=False**** > > --force_dhcp_release**** > > --iscsi_helper=tgtadm**** > > --connection_type=libvirt**** > > --root_helper=sudo nova-rootwrap**** > > #--verbose**** > > #--verbose=true**** > > --verbose=false**** > > --libvirt_xml_template=/usr/share/pyshared/nova/virt/libvirt.xml.template* > *** > > --allow_resize_to_same_host=true**** > > --max_cores=30**** > > =================================================**** > > **** > if I misunderstand something, please correct me, thanks.**** > > **** > > -Jimmy**** > > * Please do not print this email unless it is absolutely necessary. ***** > > The information contained in this electronic message and any attachments > to this message are intended for the exclusive use of the addressee(s) and > may contain proprietary, confidential or privileged information. If you are > not the intended recipient, you should not disseminate, distribute or copy > this e-mail. Please notify the sender immediately and destroy all copies of > this message and any attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient > should check this email and any attachments for the presence of viruses. > The company accepts no liability for any damage caused by any virus > transmitted by this email. > > www.wipro.com >
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