Re: offload daemon

[James Richardson <james@jamestechnotes.com>]

Ludovic Courtès writes:

> James Richardson <james@jamestechnotes.com> skribis:
>
>> James Richardson writes:
>>
>>> Ludovic Courtès writes:
>>>
>>>> Hello,
>>>>
>>>> James Richardson <james@jamestechnotes.com> skribis:
>>>>
>>>>> I am trying to setup an offload daemon.
>>>>>
>>>>> I have everything setup correctly (I think ;)
>>>>>
>>>>> $ guix offload test completes successfully.
>>>>>
>>>>> The offload daemon is actually guix on a foreign distro (Debian sid in
>>>>> this case).
>>>>>
>>>>> Neither guix running on top of a Debian (sid and jessie) nor guixsd seem
>>>>> to even call out to the offload daemon. All boxen are 64.
>>>>>
>>>>> My /etc/guix/machines.scm is here
>>>>>
>>>>> (list (build-machine
>>>>>        (name "thor.lab01.jamestechnotes.com")
>>>>>        (system "x86_64-linux")
>>>>>        (host-key "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJf0ezYgeVFit40VJwaBEW1dGm2Xz+SHzVmib8IbN58y root@thor")
>>>>>        (user "guix")
>>>>>        (speed 1.)
>>>>>        (private-key
>>>>> 	(string-append (getenv "HOME")
>>>>>        	       "/.ssh/identity-for-guix"))))
>>>>>
>>>>> Is x86_64-linux the proper system type?
>>>>
>>>> Yes.
>>>>
>>>> There are several things to consider here.  By default, guix-daemon
>>>> creates a single job, so that single job will end up being built
>>>> locally, unless you spawn, say, two “guix build” commands in parallel
>>>> (the number of jobs is per client.)
>>>>
>>>> Running “guix-daemon --max-jobs=0” should force all builds to be
>>>> offloaded:
>>>>
>>>>   https://www.gnu.org/software/guix/manual/html_node/Invoking-guix_002ddaemon.html
>>>>
>>>> I *think* “guix build --max-jobs=0” should give the same result.
>>>>
>>>> Alternately, if you run “guix build --max-jobs=2”, presumably half of
>>>> the builds will be offloaded.
>>>>
>>>> Let us know if that works for you.
>>>>
>>>> Ludo’.
>>>
>>> I have a permission problem somewhere, I think. If I run as root offload
>>> works, otherwise it doesn't. Don't really know here to look from here.
>>
>> Hmm, I move the key pair to /tmp and set the perms to 644 and offloading
>> works for my regular user... Not quite sure I understand why.
>
> The ‘guix offload’ command is invoked by guix-daemon as root.  So when
> it is invoked, (getenv "HOME") returns "/root" or similar.  Could that
> be the problem?
>
> HTH,
> Ludo’.

Well, I think there is an issue with the offload. I don't (yet) know
guile well enough to understand the code to help :(

Here is what I am finding: $ guix build blah seems to offload builds
properly. $ guix package -i blah, guix package -u blah, and $ guix
system reconfigure config.scm does not offload builds.

Thanks,
j-r