[Nix-dev] environment in systemd services

[zimbatm]

Did you try to pass the AWS keypair trough an environment variable ? I
don't know it that would fix it but it's a 3rd solution, not having access
to the right keys.

On Sat, 30 Jan 2016 at 13:20 Arnold Krille <arnold at arnoldarts.de> wrote:

> Hi all,
>
> yes, its the first time I am writing on this list.
>
> I am trying to get duply/duplicity to run. When I execute `duply amazon
> backup` in a root shell, all is well. But I want it to be run regularly
> by systemd. So I created a service:
>
> ```
> systemd.services.duplyamazon =
>   {
>     path = [ pkgs.duply ];
>     environment = { LANG = "C"; HOME="/root"; TMPDIR="/tmp"; };
>     script = "duply amazon status";
>     startAt = "Sat 4:10:00";
>   };
> ```
>
> But when I run that (either by the timer or by `systemctl start
> duplyamazon`, it fails with very strange python backtrace:
>
> ```
> Jan 30 14:10:08 portal duplyamazon-start[47296]: Using temporary
> directory /tmp/duplicity-b53bV9-tempdir Jan 30 14:10:08 portal
> duplyamazon-start[47296]: Backend error detail: Traceback (most recent
> call last): Jan 30 14:10:08 portal duplyamazon-start[47296]: File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/bin/.duplicity-wrapped",
> line 1519, in <module> Jan 30 14:10:08 portal duplyamazon-start[47296]:
> with_tempdir(main) Jan 30 14:10:08 portal duplyamazon-start[47296]:
> File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/bin/.duplicity-wrapped",
> line 1513, in with_tempdir Jan 30 14:10:08 portal
> duplyamazon-start[47296]: fn() Jan 30 14:10:08 portal
> duplyamazon-start[47296]: File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/bin/.duplicity-wrapped",
> line 1354, in main Jan 30 14:10:08 portal duplyamazon-start[47296]:
> action = commandline.ProcessCommandLine(sys.argv[1:]) Jan 30 14:10:08
> portal duplyamazon-start[47296]: File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/lib/python2.7/site-packages/duplicity/commandline.py",
> line 1062, in ProcessCommandLine Jan 30 14:10:08 portal
> duplyamazon-start[47296]: globals.backend =
> backend.get_backend(args[0]) Jan 30 14:10:08 portal
> duplyamazon-start[47296]: File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/lib/python2.7/site-packages/duplicity/backend.py",
> line 223, in get_backend Jan 30 14:10:08 portal
> duplyamazon-start[47296]: obj = get_backend_object(url_string) Jan 30
> 14:10:08 portal duplyamazon-start[47296]: File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/lib/python2.7/site-packages/duplicity/backend.py",
> line 209, in get_backend_object Jan 30 14:10:08 portal
> duplyamazon-start[47296]: return factory(pu) Jan 30 14:10:08 portal
> duplyamazon-start[47296]: File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/lib/python2.7/site-packages/duplicity/backends/_boto_single.py",
> line 161, in __init__ Jan 30 14:10:08 portal duplyamazon-start[47296]:
> self.resetConnection() Jan 30 14:10:08 portal duplyamazon-start[47296]:
> File
>
> "/nix/store/ap2bv0p5m8napigg7f6yciap4nm61ap8-duplicity-0.7.02/lib/python2.7/site-packages/duplicity/backends/_boto_single.py",
> line 187, in resetConnection Jan 30 14:10:08 portal
> duplyamazon-start[47296]: raise BackendException(err.message) Jan 30
> 14:10:08 portal duplyamazon-start[47296]: BackendException Jan 30
> 14:10:08 portal duplyamazon-start[47296]: BackendException: Jan 30
> 14:10:08 portal duplyamazon-start[47296]: 14:10:08.191 Task 'STATUS'
> failed with exit code '23'.
> ```
>
> I think its either because it can not access the tmpdir or because it
> can not access the network. And I don't know whether that is because of
> some missing environment variables or because of how systemd services
> have to be configured.
>
> Can anyone try to point me in the right direction?
>
> Thanks in advance,
>
> Arnold
>
>
> Background: I am currently setting up a new homeserver with NixOS and
> therefore I am moving all the currently running services of my ubuntu
> based homeserver. Expect more questions from me in the next weeks… ;-)
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