25.4. Duplicating an existing guest and its configuration file
This section outlines copying an existing configuration file to create a new guest. There are key parameters in your guest's configuration file you must be aware of, and modify, to successfully duplicate a guest.
-
name
-
The name of your guest as it is known to the hypervisor and displayed in the management utilities. This entry should be unique on your system.
-
uuid
-
A unique handle for the guest, a new UUID can be regenerated using the uuidgen
command. A sample UUID output:
$ uuidgen
a984a14f-4191-4d14-868e-329906b211e5
-
vif
-
-
-
If you are moving or duplicating an existing guest configuration file to a new host you have to make sure you adjust the xenbr
entry to correspond with your local networking configuration (you can obtain the Red Hat Virtualization bridge information using the command brctl show
.
-
Device entries, make sure you adjust the entries in the disk=
section to point to the correct guest image.
Now, adjust the system configuration settings on your guest:
-
/etc/sysconfig/network
-
Modify the HOSTNAME
entry to the guest's new hostname
.
-
/etc/sysconfig/network-scripts/ifcfg-eth0
-
-
/etc/selinux/config
-
Change the SELinux enforcement policy from Enforcing
to Disabled
. Use the GUI tool system-config-securitylevel
or the command:
# setenforce 0