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=1and also enabled masquerading in the iptablesiptables -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@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@newtry fedora]# on the controller machine stack@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@celestial-PC-1:~$ on instance [root@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@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
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