podman scp on NixOS

[asbachb]

Hello,

I'm trying to find out the cause of NixOS/nixpkgs#187589

It seems pdoman scp tries to call podman command via ssh. I could not find the part in source so that I could verify if this needs to be fixed on podman or on NixOS side.

Based on debug output it's somewhere after here:

podman/cmd/podman/root.go

Line 282 in 3dace12

logrus.Debugf("Called %s.PersistentPostRunE(%s)", cmd.Name(), strings.Join(os.Args, " "))

Thanks

[vrothberg]

Thanks for reaching out!

@cdoern, can you take a look?

[rhatdan]

podman scp
when talking to a remote destination, will attempt an ssh connection and then communicate with a podman service running on the remote machine. Basically it is doing a
podman save foo.tar
scp foo.tar remote:/tmp/foo.tar
ssh remote podman-remote load foo.tar

[asbachb]

@rhatdan When you check the link I posted the problem is that on NixOS this ssh remote podman-remote load foo.tar seems to fail. It seems that podman local assumes the podman binary is present at the remote location in the same place.

That's the reason I look for the code which is doing this remote call to understand if it's a problem of NixOS patching or a podman bug.

[rhatdan]

I would say we should just rely on PATH for finding podman on remote machine, if that is what is happening.
@cdoern PTAL.

[cdoern]

@asbachb what version of podman are you using? I believe I fixed the path issue in the main branch. I will check

[asbachb]

@cdoern 4.2 on both sides.

[asbachb]

@cdoern Have you had a time to look into?