Re: Where best to start

[Martin Hargreaves <m.l.hargreaves@xxxxxxxxx>]

Thank you very much for this input, Dave. It has allowed me to progress 
to the next step.
By using 'ifconfig' and after re-booting my m/c a few times to make sure 
that I could still access the internet, the command you showed me 
produced...
brctl show
bridge name     bridge id               STP enabled     interfaces
docker0         8000.0242296ec6a6       no              
xenbr0          8000.861cdc1ac12c       no              enp0s25

I only issued the command that you gave me, so presumably the bridge was 
created by the config.yaml file on boot-up?
I don't know where 'docker0' appeared from but hopefully this will not 
interfere with the progress of the installation of a HVM.
  Thank you again,
           Martin...


On 01/06/2020 22:36, Dave Hill wrote:
> I'm not a Ubuntu user so can't help there but the first thing I would do 
> generically is check that the bridge is working:
> brctl show
>
> should yield something like this:
>
>      bridge name bridge id               STP enabled     interfaces
>      xenbr0          8000.4ccc6ad1847d       no enp2s0
>
> As for a tutorial, I'd suggest at least having a look through the Xen 
> Begginers Guide:
> https://wiki.xenproject.org/wiki/Xen_Project_Beginners_Guide
>
> It's dated (in particular, I wouldn't follow the advice there for 
> building a PV Debian guest), but it contains the essentials to get Xen 
> working generically.
> Also, since your network stopped working, I'd go back and check that 
> your netplan configuration matches the one in the link you sent. The key 
> is that dhcp is not enabled on the ethernet card (eth0 or enps0 or 
> whatever), but rather on the bridge.
> David
>
> On 2020-06-01 3:06 a.m., Martin Hargreaves wrote:
> > Dear Xen Community,
> >
> > I’m new to the field of virtualization so please excuse this request 
> > if it is placed on the incorrect forum.
> > I am running Ubuntu 18.04 and following the instructions on...
> >
> > https://help.ubuntu.com/community/Xen
> >
> > and not getting anywhere fast. I found out that the above instructions 
> > are out of date for Ubuntu 18.04, because the networking has been 
> > implemented differently
> > https://askubuntu.com/questions/1171864/how-to-install-xen-project-on-ubuntu-server-18-04-3-lts 
> >
> > However, when I make this change my machine can no longer access the 
> > internet.
> > I have searched on https://xen.markmail.org/ but not really found a 
> > clear answer to my question:
> > Please can anyone let me know the best way to get Xen up and running 
> > on Ubuntu? Should I try to put Ubuntu 16.04 on my m/c and then follow 
> > the instructions given?
> > And for the best tutorial? I have seen that there is “The Definitive 
> > Guide to the Xen Hypervisor” by David Chisnall (2008) and “Running 
> > Xen: A Hands-on Guide to the Art of Virtualization” by Jenna Matthews 
> > et. Al (2008) but will these help with installing and using the 
> > current version?
> >   Thank you for any insights that anyone may have.
> >
> >     Martin...