Check if you have a dnsmasq running on host that runs nova-network. It's necessary a DNS service on 10.0.1.1.
On the nova-network host: $ ps aux | grep dns or you can look for open ports: $ netstat -tupan | grep 53 :) On Fri, Oct 7, 2011 at 2:08 PM, Sharif Islam <[email protected]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > The instances in openstack are running and I can ssh using the public > address (cactus release). Today I noticed, the vms cannnot connect to > the outside world properly. I don't recall this happening before. The > issue seems to be with name resolution. I can ping fine using the ip > addresses. > > > $ ssh -i natty2.pem [email protected] > Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-11-virtual x86_64) > > Last login: Fri Oct 7 14:17:47 2011 from 129.79.49.229 > root@i-000003e4:~# ifconfig eth0 > eth0 Link encap:Ethernet HWaddr 02:16:3e:27:5a:da > inet addr:10.0.1.7 Bcast:10.0.1.255 Mask:255.255.255.0 > inet6 addr: fe80::16:3eff:fe27:5ada/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:3995 errors:0 dropped:0 overruns:0 frame:0 > TX packets:494 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:654810 (654.8 KB) TX bytes:67031 (67.0 KB) > Interrupt:11 Base address:0xa000 > > root@i-000003e4:~# ping www.google.com > ping: unknown host www.google.com > root@i-000003e4:~# ping 72.14.204.103 > PING 72.14.204.103 (72.14.204.103) 56(84) bytes of data. > 64 bytes from 72.14.204.103: icmp_req=1 ttl=54 time=32.3 ms > 64 bytes from 72.14.204.103: icmp_req=2 ttl=54 time=32.4 ms > ^C > - --- 72.14.204.103 ping statistics --- > > > # dig @10.0.1.1 google.com > > ; <<>> DiG 9.7.3 <<>> @10.0.1.1 google.com > ; (1 server found) > ;; global options: +cmd > ;; connection timed out; no servers could be reached > > > # dig @8.8.4.4 google.com > > ; <<>> DiG 9.7.3 <<>> @8.8.4.4 google.com > ; (1 server found) > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 977 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0 > > ;; QUESTION SECTION: > ;google.com. IN A > > ;; ANSWER SECTION: > google.com. 300 IN A 72.14.204.147 > google.com. 300 IN A 72.14.204.105 > google.com. 300 IN A 72.14.204.103 > google.com. 300 IN A 72.14.204.104 > google.com. 300 IN A 72.14.204.99 > > ;; Query time: 36 msec > ;; SERVER: 8.8.4.4#53(8.8.4.4) > ;; WHEN: Fri Oct 7 14:39:00 2011 > ;; MSG SIZE rcvd: 108 > > > # cat /etc/resolv.conf > nameserver 10.0.1.1 > domain novalocal > search novalocal > > # route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use > Iface > 10.0.1.0 0.0.0.0 255.255.255.0 U 0 0 0 > eth0 > 0.0.0.0 10.0.1.1 0.0.0.0 UG 100 0 0 > eth0 > > When I add nameserver 8.8.4.4 in resolv.conf, I can ping them. Any idea? > > > - --sharif > > > - -- > Sharif Islam > Senior Systems Analyst/Programmer > FutureGrid (http://futuregrid.org) > Pervasive Technology Institute, Indiana University Bloomington > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iQEcBAEBAgAGBQJOjzIAAAoJEACffes9SivFCPoIAIReLK6aaghrBhWsCilKoy+e > QZwMEjEytldN2LTTTimaE7rhG/C73L40qRQaUToojm8UrpeiaYYwSvjaeazxR65i > 9fUPu17cvzjt4UdbItet+/VEfFupLWd/47WCX7ky8m59aDpSP+BzQVj1IcQRan5E > 9OFtjeBKLuzndNerI1Cle0PgL709EPo/IbL+f4XlbfePnddZF0gjrHawZCPTRBUl > 1cAKoJNLcT6Jlt0BO1Xr9+Wf2K7wuDL/eUJtQ6Cq6ZRp9vXohO8bxjVZ1x8l9bQc > Q0DC+4hxrVIml193vQo/PU9Kuqc6ARTdJK48ezZ/o3fcP6Z1kCl5lqSM6D3x4rs= > =GUQz > -----END PGP SIGNATURE----- > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > -- - MSc. Correa, J.L.
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