Wednesday, June 24, 2009

Virtual IP addresses

You can add several virtual IP addresses to a physical network interface. A good starting point is to copy the interface definition file of the device you want to add a virtual IP address to.

cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:0

You may have to modify ifcfg-eth0 to match your physical interface name.

Now you can edit the new file ifcfg-eth0:0 and specify the network settings of the virtual interface.

To make the changes take effect please restart the network services using:

service network restart

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