Re: [Libguestfs] Can I use libguestfs to pass some parameters into a KVM virtual machine
On Tue, Aug 04, 2009 at 09:26:31AM +0800, Zhang Qian wrote:
I have installed KVM in my RHEL5.3 box, and created some VMs on it.
I am wondering if I can use libguestfs to pass some parameters/files
into my VMs. As you may know, for Xen, I can use xenstore command to
do this job, can libguestfs do the same thing?
What I want to do includes:
1. Modify some configurations in my VM, such as editing
/etc/sysconfig/network-scripts/ifcfg-eth0 to add a static IP for my
VM.
2. Upload a script into my VM and run it in the guest OS.
Yes, this is precisely what libguestfs is for. Make sure the virtual
machine is shut down before you try to modify it.
Is here any sample C code I can refer to?
There are some very simple examples in the source:
http://git.et.redhat.com/?p=libguestfs.git;a=tree;f=examples;hb=HEAD
And the documentation of the C API:
http://libguestfs.org/guestfs.3.html
See in particular:
http://libguestfs.org/guestfs.3.html#uploading
http://libguestfs.org/guestfs.3.html#running_commands
Rich.
--
Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
http://et.redhat.com/~rjones/virt-p2v