[Libguestfs] cloud-init in virt-builder images

[Jonathan Wright]

This is extremely helpful.  I only discovered virt-builder while debugging the issue with ipv6 I reported a few days ago.  Great little tool!

Thank you!


________________________________
From: "Richard W.M. Jones" <rjones at redhat.com>
Sent: Wednesday, April 3, 2019 12:29 PM
To: Jonathan Wright
Cc: libguestfs at redhat.com
Subject: Re: [Libguestfs] cloud-init in virt-builder images

On Wed, Apr 03, 2019 at 09:34:03AM -0500, Jonathan Wright wrote: 
> I've noticed that none of the images from virt-builder have 
> cloud-init in them by default.  The documentation reads to me as if 
> the OS vendor's official cloud images are the ones used as the 
> sources for the generated images but I'm assuming this is wrong. 

The problem with cloud-init is that it interrupts normal boot if 
you're not booting the images in the cloud.  However you can usually 
add cloud-init by doing: 

virt-builder --install cloud-init os-version 

> I know for a fact CentOS's cloud images from 
> https://cloud.centos.org/centos/7/images/ and Ubuntu's from 
> https://cloud-images.ubuntu.com/bionic/ have cloud-init installed 
> and enabled already. 
> 
> Where are the images sourced from if not these official images? 

The ones we supply are built using this script: 

https://github.com/libguestfs/libguestfs/blob/master/builder/templates/make-template.ml 

The ones from SUSE are built using their build system.  We'd like 
other distros to build there own images for us, but no others do so 
far. 

> I understand I can install cloud-init with virt-builder but I'm 
> trying to figure out what OS-distributed images are in use so I may 
> determine what else is different from expectations. 

You can set up your own virt-builder repos, and populate them with 
images from wherever you like, and if you want also disable the 
official virt-builder repo.  This will give you complete control over 
what images get built.  Have a look at the files in 
/etc/virt-builder/repos.d, and the man page. 

Rich. 

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones 
Read my programming and virtualization blog: http://rwmj.wordpress.com 
libguestfs lets you edit virtual machines.  Supports shell scripting, 
bindings from many languages.  http://libguestfs.org 
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