红帽全球峰会15.8. Removing host devices from virtual machines by using the web console
To free up resources, modify the functionalities of your VM, or both, you can use the web console to modify the VM and remove host devices that are no longer required.
Prerequisites
You have installed the RHEL 10 web console.
For instructions, see Installing and enabling the web console.
- The web console VM plugin is installed on your system.
Optional: Back up the XML configuration of your VM by using
virsh dumpxml example-VM-1and sending the output to a file. For example, the following backs up the configuration of your testguest1 VM as thetestguest1.xmlfile:# virsh dumpxml testguest1 > testguest1.xml # cat testguest1.xml <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <name>testguest1</name> <uuid>ede29304-fe0c-4ca4-abcd-d246481acd18</uuid> [...] </domain>
Procedure
In the interface, click the VM from which you want to remove a host device.
A new page opens with an Overview section with basic information about the selected VM and a Console section to access the VM’s graphical interface.
Scroll to .
The Host devices section displays information about the devices attached to the VM and options to Add or Remove devices.
Click the button next to the device you want to remove from the VM.
A remove device confirmation dialog is displayed.
Click .
The device is removed from the VM.
Troubleshooting
If removing a host device causes your VM to become unbootable, use the
virsh defineutility to restore the XML configuration by reloading the XML configuration file you backed up previously.# virsh define testguest1.xml
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