Re: [Xen-devel] Bringing up OSS test framework on moonshot(aarch64) systems

[Bhupinder Thakur <bhupinder.thakur@xxxxxxxxxx>]

Hi Ian,


On Wednesday 08 November 2017 05:09 PM, Ian Jackson wrote:
> Bhupinder Thakur writes ("Bringing up OSS test framework on moonshot(aarch64) 
> systems"):
> > While going through [1], I have some queries/doubts on the configuration.
> > H
> > NetNameservers 10.80.248.2 10.80.16.28 10.80.16.67
> > HostProp_DhcpWatchMethod leases dhcp3 dhcp.uk.xensource.com:5556
> > TftpPath /usr/groups/netboot/
> >
> > DebianNonfreeFirmware firmware-bnx2
> > DebianSuite squeeze
> > DebianMirrorHost debian.uk.xensource.com
> > DebianPreseed= < <‘END’
> > d-i clock-setup/ntp-server string ntp.uk.xensource.com
> > END
> >
> > 1. In this configuration, where would the DNS server be running? Does
> > it expect that a DNS server is already configured in the network and
> > it has mapping of name <--> IP address for all test hosts? Or do we
> > need to setup it up on the OSS controller?
> The information about the nameservers, the tftp server, and the ntp
> server, is supposed to refer to infrastructure that already exists.
> I think your test hosts should be in the DNS, yes.  It may be possible
> to get it to work without doing that but I wouldn't recommend it.
>
> osstest does not need a dedicated network.  Specifically, it can
> share its broadcast domain, and its dhcp and tftp servers (and web
> proxies, Debian mirrors, ntp servers, and so on), with other uses.
>
> When running osstest in production ("Executive") mode the individual
> test boxes must be configured to be available to osstest only if they
> are not being used for something else, of course.
>
> See INSTALL.production.
>
> > 2. What is the DhcpWatchMethod option used for?
> See under DHCP in INSTALL.production, and please let me know if that's
> not clear.
What I could understand is that this option is used to listen to any 
changes in the
dhcp lease file. But I am not clear why osstest needs to listen to any 
changes to
the lease file. Is it because it needs to know the IP address allocated 
to the guest
VMs? So whenever the guest VM is allocated an ip address, the osstest 
would come
to know.

> > 3. How are the debian related options mentioned above used? Does OSS
> > fetches the installers/preseed files from DEbianMirrorHost and place
> > them in the required tftp folders?
> mg-debian-installer-update downloads d-i installation information and
> puts it in the tftp area.
>
> But the tftp area is also updated at runtime, obviously, in order to
> control the booting of each host.  And the mirror host is accessed
> separately, too.
>
> > I may have more doubts as I try to set things up.
> I'm happy to answer more questions, of course :-).
>
> > [1] https://blog.xenproject.org/2013/09/30/osstest-standalone-mode-step-by-step/
> That blog post may be rather out of date, I'm afraid.  But the in-tree
> documentation is somewhat better since then.
>
> > I am trying to bring up OSS test framework on a couple of moonshot
> > systems which are accessible to me remotely.
> I'm not familiar with the referent of "moonshot" in this context.  IME
> "moonshot" is a project name chosen multiple times, for different
> projects, by people who want to give an impression that the project is
> ambitious.
>
> Regards,
> Ian.
Regards,
Bhupinder

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