[Nix-dev] Multiple machines with nix store shared via NFS

[Azul]

how would you rollback a broken system if the /nix store was remote and the
box wouldnt boot or have no network ?

On 1 July 2016 at 21:34, Layus <layus.on at gmail.com> wrote:

> I never sait it was a good idea, just soemthing worth investigating.
>
> Now, this has been discussed on the ML already
>
> See for example
> [Nix-dev] Sharing the Nix store between systems
> <http://lists.science.uu.nl/pipermail/nix-dev/2011-December/007381.html>
> *Rickard Nilsson *[Nix-dev] nix on compute cluster?
> <http://lists.science.uu.nl/pipermail/nix-dev/2014-October/014584.html>
>
> * Andreas Herrmann *And more generally Google search on site:
> http://lists.science.uu.nl/pipermail/nix-dev/ :-).
>
> -- Layus.
>
>
> On 01/07/16 21:55, Renato Alves wrote:
>
> I never tried it with sockets, only tcp ports.
>
> I need to move the socket to a different location. Currently it also
> sits on NFS. I can play with symlinks making it point to a local disk.
>
> The entire setup sounds terribly hackish though.
>
> If anyone has better alternatives I'd love to hear them.
>
> Thanks,
> R
>
> On 01/07/16 20:51, Layus wrote:
>
> Just one idea off the top of my head: Would it be possible to forward
> the unix socket of the daemon ?
>
> -- Layus ?
>
> On 01/07/16 15:10, Renato Alves wrote:
>
> Hi everyone,
>
>
> Recently I've been trying to setup nix on a multiple-machine shared
> environment. At the moment I have one machine setup with nix-daemon
> running from a store in a custom location (/shared/myuser/nix). This
> location is shared via NFS with several other machines. This is all
> still pretty new to me as I've only recently started using nix and
> haven't used nixos yet.
>
> Before setting up nix-daemon I ran into some problems with database
> corruption (sqlite) due to concurrent processes. With nix-daemon these
> have gone away.
>
> One limitation that I identified recently is that on any of the other
> machines that do not have nix-daemon running (but have read access to
> the store) I can run commands from the store without problems but
> cannot, for instance, use nix-shell.
> So I thought of spawning a nix-daemon instance on those machines but I'm
> not sure what is the best way to set it up without risking DB corruption
> again.
>
> These are the requirements I'd like to meet:
>  * /shared/myuser/nix is shared across multiple machines with the same
> architecture (x86_64-linux).
>  * All machines should be able to use nix-shell or any nix related
> command, including requesting installation of packages.
>  * Only some machines are allowed to compile. Machines that are not
> allowed should rely on something like remote-systems.conf to distribute
> work.
>
> Is this kind of setup currently possible with nix? If so, can someone
> provide some guidance?
>
>
> Thanks,
> Renato
>
>
>
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