I'm using openstack in oracle-linux. The external connection is done with snat. The external ip is forwarded to the internal ip.
You can see the rules with: iptables -S -t nat You can read some info here (How floating IPs work): http://www.mirantis.com/blog/configuring-floating-ip-addresses-networking-openstack-public-private-clouds/ Cristian Falcas On Tue, Aug 6, 2013 at 12:12 PM, Batsayan Das <batsayan....@tcs.com> wrote: > How does the VM's connect outside if the external network is down? > Sorry, I am not so good in networking, it may be stupid question. > > Can you share your localrc file? > > Regards, > Batsayan Das > Tata Consultancy Services > Mailto: batsayan....@tcs.com > Website: http://www.tcs.com > ____________________________________________ > Experience certainty. IT Services > Business Solutions > Consulting > ____________________________________________ > > > From: Cristian Falcas <cristi.fal...@gmail.com> To: Batsayan Das < > batsayan....@tcs.com> Cc: openstack@lists.openstack.org Date: 08/06/2013 > 01:14 PM Subject: Re: [Openstack] Network setup with floating IP > ------------------------------ > > > > external gateway is supposed to be down, I think: I have floating IP > working and the external network is down. > > Cristi Falcas > > On Tue, Aug 6, 2013 at 9:03 AM, Batsayan Das <batsayan....@tcs.com> wrote: > > > > Hello, > > > > I am trying to deploy devstack in Dell R910 with Ubuntu 12.04 as host > OS. I > > installed devstack in the scripted manner as mentioned in > > > http://docs.openstack.org/trunk/openstack-compute/install/apt/content/scripted-dev-installation.html > > > > > > My intention is to create CentOS VMs with following property. > > 1. VMs should be able to ping each other > > 2. VMs are accessible by ssh from any host in 10.135.0.XX network > > 3. VMs should be connected to open internet. > > > > To do this I am following the All-In-One: Dedicated Hardware method > > mentioned in http://devstack.org/guides/single-machine.html > > > > My localrc contains the following > > condor@r910:~/devstack$ cat localrc > > disable_service n-net > > enable_service q-svc > > enable_service q-agt > > enable_service q-dhcp > > enable_service q-l3 > > enable_service q-meta > > enable_service quantum > > # Optional, to enable tempest configuration as part of devstack > > enable_service tempest > > DATABASE_PASSWORD=condor > > RABBIT_PASSWORD=condor > > SERVICE_TOKEN=condor > > SERVICE_PASSWORD=condor > > ADMIN_PASSWORD=condor > > > > HOST_IP=192.168.161.138 > > FLOATING_RANGE=192.168.161.224/28 > > FLAT_INTERFACE=eth0 > > > > Route information of the host > > condor@r910:~/devstack$ route -n > > Kernel IP routing table > > Destination Gateway Genmask Flags Metric Ref Use > > Iface > > 0.0.0.0 10.135.0.5 0.0.0.0 UG 100 0 0 > eth1 > > 10.0.0.0 192.168.161.225 255.255.255.0 UG 0 0 0 > eth0 > > 10.135.0.0 0.0.0.0 255.255.255.192 U 0 0 0 > eth1 > > 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 > eth0 > > 172.24.4.224 0.0.0.0 255.255.255.240 U 0 0 0 > > br-ex > > 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 > > virbr0 > > 192.168.161.0 0.0.0.0 255.255.255.0 U 0 0 0 > eth0 > > > > Devstack External Gateway interface of the router is in DOWN state. Pls > > fined the attached screen shot. > > > > How can I make it ACTIVE state? What is the wrong I am making? > > > > Thanks for any help. > > > > Regards, > > > > Batsayan Das > > Tata Consultancy Services > > Mailto: batsayan....@tcs.com > > Website: http://www.tcs.com > > ____________________________________________ > > Experience certainty. IT Services > > Business Solutions > > Consulting > > ____________________________________________ > > > > =====-----=====-----===== > > Notice: The information contained in this e-mail > > message and/or attachments to it may contain > > confidential or privileged information. If you are > > not the intended recipient, any dissemination, use, > > review, distribution, printing or copying of the > > information contained in this e-mail message > > and/or attachments to it are strictly prohibited. If > > you have received this communication in error, > > please notify us by reply e-mail or telephone and > > immediately and permanently delete the message > > and any attachments. Thank you > > > > > > _______________________________________________ > > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > Post to : openstack@lists.openstack.org > > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > > > >
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