Re: Trying to get to a qemu guest from it's host. (George R Goffe)

[Ottavio Caruso]

On 18/09/2020 02:02, George R Goffe wrote:
> Ottavio,
>
> Thanks for your response.
>
> Although this doc link you've provided is magnificent, it doesn't help me. 
> There's just too much information and too many undefined terms and too many 
> options (which ones do I need and which ones do I care nothing about?).
>
> Here's my VM definition(?) from a script I put together to start the VM. The VM comes up 
> and is able to get to the internet just fine. The VM's ip address is 10.0.2.15 as the doc 
> states (due to no -nic statement I think). There are questions that I have that are 
> probably buried in the doc, both what you gave me and the tons and tons of doc in the 
> internet. I'm probably not searching with the "right" args.
>
> So. Here's my situation:
>
> The VM:
>
>   qemu-system-x86_64 \
>        -cdrom /isos/Fedora-Everything-netinst-x86_64-Rawhide-20200828.n.2.iso  \
>        -cpu host \
>        -enable-kvm \
>        -m \
>        -smp 2 \
>        -drive file=/export/home/var-lib-libvirt-images/fc34-bt.img,format=raw  \
>        -boot menu=on,reboot-timeout=15
>
> I have a host at a local address of 10.28.0.2, it's a class C network behind a 
> firewall/router/dns/dhcp server.
>
> My questions:
>
> 1) the VM doesn't seem to be able to "see" this network (10.28.0.0). How can I 
> make that happen?
>
> 2) the host can't "see" the VM or the 10.0.2.0 network. How can I make that 
> happen?
>
> 3) Since my router/firewall provides DHCP services, I want the VM to "talk" to 
> this server in order to get it's networking information.
>
> What I'm looking for is a simple solution. Remember, I'm NOT a network admin.

The answer to your questions are in the documentation and you need to 
make a to effort to read it. In user mode networking, it is obvious that 
the VM cannot see your "real" network. You either poke a hole in the VM, 
for example using tcp redirection, or use tun/tap networking. Again, 
it's all in the docs and on the qemu website.


--
Ottavio Caruso

A: Because it messes up the order in which people normally read text.
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