Network settings for Ubuntu two net card

Recently set up an OpenStack platform in your own experiment and start preparing to use KVM to build an experimental environment, recording some of the minor problems encountered during the installation process.

For Ubuntu configuration Two net card, encountered problems, use Ifup eth1 time: Rtnetlink answers file exists fail to bring up eth1, the problem reason, in the network configuration to two network cards are configured gateway, to search the internet, hair It is not possible to set up two gateways at the same time, resulting in two default routes in the routing table, and if you have two default routes, there will be two 0.0.0.0 entries in the routing table, and the system cannot handle this situation and the above error will occur.

Configuration process: In the/etc/network/interface configuration of the two network card information, only the network card to connect the external network needs to configure the gateway and nameserver, and then restart the Internet, ifup eth1 or restart the computer can see the information of the two net cards.

Network settings for Ubuntu two net card