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6.4. Installing guests with PXE
This section covers the steps required to install guests with PXE. PXE guest installation requires a shared network device, also known as a network bridge. The procedures below covers creating a bridge and the steps required to utilize the bridge for PXE installation.
Create a new bridge
Create a new network script file in the /etc/sysconfig/network-scripts/ directory. This example creates a file named ifcfg-installation which makes a bridge named installation.
# cd /etc/sysconfig/network-scripts/
# vim ifcfg-installation
The line, TYPE=Bridge, is case-sensitive. It must have uppercase 'B' and lower case 'ridge'.
Start the new bridge by restarting the network service. The ifup installation command can start the individual bridge but it is safer to test the entire network restarts properly.
# service network restart
There are no interfaces added to the new bridge yet. Use the brctl show command to view details about network bridges on the system.
# brctl show
bridge name bridge id STP enabled interfaces
installation 8000.000000000000 no
virbr0 8000.000000000000 yes
The virbr0 bridge is the default bridge used by libvirt for Network Address Translation (NAT) on the default Ethernet device.
Add an interface to the new bridge
Edit the configuration file for the interface. Add the BRIDGE parameter to the configuration file with the name of the bridge created in the previous steps.