Open Stack

Hi somshekar,
Maybe you can ping 8.8.8.8 or any other open dns ip to verify it, or check your nameserver isn't correctly? 





At 2014-12-29 22:51:40, "somshekar kadam" <som_kadam at yahoo.co.in> wrote:

Hello All,



I have openstack instance able to ping compute/controller and other hosts in the network.

Not able to ping google.com

My external network is 10.10.126.xx


able to ping 10.10.126.1 gateway



able to ping host controller 10.10.126.62 which also nova compute

able to ping other hosts 10.10.126.54 and other machines in network.

able to ping br100 and virbr0


enabled /etc/sysctl.conf to contain the following: net.ipv4.ip_forward=1
and also enabled masquerading in the iptables
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE


internal IP of instance is 10.4.128.2 and floating IP assigned is 10.10.126.129

On instance route command

[root at newtry fedora]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.4.128.3      0.0.0.0         UG    0      0        0 eth0
10.4.128.0      0.0.0.0         255.255.240.0   U     0      0        0 eth0
[root at newtry fedora]#



on the controller machine

stack at celestial-PC-1:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0
10.4.128.0      0.0.0.0         255.255.240.0   U     0      0        0 br100
10.10.126.0     0.0.0.0         255.255.255.0   U     0      0        0 br100
192.168.1.0     0.0.0.0         255.255.255.0   U     9      0        0 wlan0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0
stack at celestial-PC-1:~$







on instance

[root at newtry fedora]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether fa:16:3e:20:e6:e5 brd ff:ff:ff:ff:ff:ff
    inet 10.4.128.2/20 brd 10.4.143.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::f816:3eff:fe20:e6e5/64 scope link
       valid_lft forever preferred_lft forever
[root at newtry fedora]#



 
what is missing not able to ping google.com from instance

please help on this with your valuable suggestions



thanks in advance





Regards
Neelu




-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20141230/f220bc18/attachment.html>