Re: Network with QEMU generated image (guix system vm)?

[ng0 <ngillmann@runbox.com>]

ng0 <ngillmann@runbox.com> writes:

> ng0 <ngillmann@runbox.com> writes:
>
>>  > Hi,
>>
>>  > It should be enough to add “-net user” on the run-vm.sh command line
>>  > (info "(guix) Running GuixSD in a VM"), and then having a DHCP client
>>  > run inside the VM, such as ‘dhcp-client-service’.
>>
>>  > Does that help?
>>
>>  > Ludo’.
>>
>> I will double check on dhcp-client-service, but afaik I already tried
>> all variations of dhcp we can have in guix.
>> I will try passing just this again.
>>
>>  >  > It should be enough to add “-net user” on the run-vm.sh command line
>>  >  > (info "(guix) Running GuixSD in a VM"), and then having a DHCP client
>>  >  > run inside the VM, such as ‘dhcp-client-service’.
>>
>>  >  Ah, yes this probably needs some documentation. Also should include an
>>  >  explanation why the flag isn't added by default and how to connect to
>>  >  a ssh server running in the vm.
>>
>>  >  > Currently I can't ping
>>
>>  >  You can't ping a vm anyway since it emulates the TCP/UDP layers I
>>  >  think and no ICMP. [0]
>>
>> Thanks for the answer, but as I've written in my initial question I
>> don't want to ping the VM.
>> I am creating a VM from a guix branch with ./pre-inst-env guix system
>> and a config.scm of a specific system. I've read my initial post again
>> and I can understand how you could draw this conclusion.
>> So, I am not trying to ping the VM. I am inside the VM and my service
>> needs an outbound connection to get an initial file into its home. To
>> debug my service I need to test if I can ping gnu.org because connection
>> fails in every configuration I have. With the normal qemu VMs running
>> Gentoo in NixOS I have, I can use ping which is normal expected behavior.
>
> Adding: this is about gnunet-service, previously not published. I can't
> continue with git service due to the reasons you will see in the
> reminder I've sent about it in the thread.
>
> Do I have to add a networking bridge in GuixSD for the VM to work?
> Currently nscd in the VM is discovered at 10.0.2.2 and the VM gets
> 10.0.2.15. If so, can you either point me to documentation or what I
> have to search for or provide some quick instructions how I set this up
> on GuixSD?
>
>>  >  [0] http://unix.stackexchange.com/questions/78953/qemu-how-to-ping-host-network
>
> Thanks
> -- 
>               ng0
>
>

So obviously you need to add ntp-service if you just use %base-services
+ some minor additions.... I thought it was part of base. This fixes the
resolution of names, but introduces problems with ntpd (unexpected
origin timestamps).
I still can't ping, but I will let the VM run for a while now to see if
something needs to get in sync.
-- 
              ng0