Sorry, I re-checked this point and found out that the VM can reach the outer world (even the Google's IP I wrote early) by using my company's DNSs.
So, problem solved :) Thank you very much! 2013/10/1 Giulio Vito de Musso <giulio.vito.demu...@gmail.com> > Hi Darragh and thanks for the tip > > I tried this command and now the VM can ping the computers which are in > the Devstack-machine's LAN but these one (obviously) cannot ping the VM; > but that's not a problem. > > The problem is that the VM cannot ping one of the Google's IPs (74.125.224.72) > even though it should access the Google's IP by the Devstack's IP. How can > it be? > > > 2013/10/1 Darragh O'Reilly <dara2002-openst...@yahoo.com> > >> Giulio, >> >> the packets from the instance are leaving the devstack VM with the >> floating IP as the source address. Even if they do get out to the Internet, >> upstream routers would not know what to do with the return packets which >> have the floating IP as the destination address. >> >> Try this on the devstack VM: >> >> sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE >> >> Then the packets will be SNATed to the devstack VM IP before they leave. >> >> Re, Darragh. >> >> > Giulio Vito de Musso giulio.vito.demusso at gmail.com >> > Mon Sep 30 21:31:03 UTC 2013 >> > >> > Previous message: [Openstack] OVS bandwidth limiting >> > Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] >> > >> > Hi to all, >> > >> > I'm facing a problem with Devstack+Neutron+LBaaS. >> > I installed Devstack+Neutron+LBaaS onto a Ubuntu 12.04 VM adding the >> > following lines to Devstack's localrc and then running stack.sh >> > >> > >> > > 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 neutron >> > > enable_service tempest >> > > enable_service q-lbaas >> > >> > >> > At the end of the installation I create a network with a "mySubnet" >> subnet >> > (with a 192.168.0.0/24 IP range and the DNS IPs set properly), a >> > "myKeypair" keypair, a "myRouter" router and link the router to the >> > "public" (as external gateway) and "mySubnet" networks. >> > Then I launch a Ubuntu Cloud 12.04 VM in Horizon associating the >> mySubnet >> > network, the myKeypair keypair and a brand new floating IP. >> > >> > I can ping and SSH the VM from the Devstack machine and the VM can ping >> the >> > Devstack machine, the br-ex and the myRouter; the problem is that the VM >> > cannot access the Internet. >> > In particular, it seems that the VM cannot ping the DNS server (infact >> it >> > cannot resolve any Internet hostname) even though the br-ex bridge is up >> > running. >> > >> > What can be the problem? I'm stuck at this point for three weeks and >> cannot >> > go forward in my LBaaS analysis. >> > >> > Thanks >> > Giulio >> >> >> _______________________________________________ >> 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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