Re: [libvirt-users] Updating Multiple VM Guests?

From: Laine Stump <laine(a)laine.org&gt; Subject: Re: [libvirt-users] Updating Multiple VM Guests? To: libvirt-users(a)redhat.com Date: Wednesday, November 10, 2010, 1:27 PM On 11/10/2010 01:20 PM, Kenneth Stailey wrote: > > --- On Wed, 11/10/10, Laine Stump&lt;laine(a)laine.org&gt; wrote: > >> From: Laine Stump&lt;laine(a)laine.org&gt; >> Subject: Re: [libvirt-users] Updating Multiple VM Guests? >> To: libvirt-users(a)redhat.com >> Date: Wednesday, November 10, 2010, 12:41 PM >> On 11/10/2010 11:59 AM, Kenneth >> Stailey wrote: >>> Hi, >>> >>> The libvirt.org FAQ says that "virsh edit" is the >> recommended way of updating the libvirt xml. >>> If a change has to be made to many VMs "virsh edit" is >> tedious, time-consuming and likely to be prone to careless >> errors. >>> Is there a command line approach to updating multiple >> VMs? >> >> How about: >> >>     for g in guest1 guest2 guest3 guest4; do >>        virsh dumpxml --inactive $g >>> /tmp/g.xml >>        # do whatever sed/etc commands you >> want here >>        virsh define /tmp/g.xml >>    done >> >> (or something like that, anyway :-) > The "sed, etc." is a mistake since XML does not have guaranteed format. > > I suppose XMLStarlet could be used. > > http://xmlstar.sourceforge.net/ Yeah. sed is just my general purpose "replacement for editing by hand" token ;-) Something that is xml-aware would obviously be a much better choice.