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

[Renato Alves]

The number of machines is too large to have a nix store on each of them,
both in terms of maintenance as well as storage.
Some of these machines are clusters so NFS is necessary at least within
cluster nodes.

R



On 01/07/16 15:21, Domen Kožar wrote:
> In my experience, NFS is not worth the trouble. Are you absolutely sure
> that you need it?
> 
> On Fri, Jul 1, 2016 at 3:10 PM, Renato Alves <alves.rjc at gmail.com
> <mailto:alves.rjc at gmail.com>> 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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> 

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