nixpkgs/nixos/tests/cloud-init.nix

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{ system ? builtins.currentSystem,
config ? {},
pkgs ? import ../.. { inherit system config; }
}:
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with import ../lib/testing-python.nix { inherit system pkgs; };
with pkgs.lib;
let
inherit (import ./ssh-keys.nix pkgs)
snakeOilPrivateKey snakeOilPublicKey;
metadataDrive = pkgs.stdenv.mkDerivation {
name = "metadata";
buildCommand = ''
mkdir -p $out/iso
cat << EOF > $out/iso/user-data
#cloud-config
write_files:
- content: |
cloudinit
path: /tmp/cloudinit-write-file
users:
- default
- name: nixos
ssh_authorized_keys:
- "${snakeOilPublicKey}"
EOF
cat << EOF > $out/iso/meta-data
instance-id: iid-local01
local-hostname: "test"
public-keys:
- "${snakeOilPublicKey}"
EOF
${pkgs.cdrkit}/bin/genisoimage -volid cidata -joliet -rock -o $out/metadata.iso $out/iso
'';
};
in makeTest {
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name = "cloud-init";
meta = with pkgs.lib.maintainers; {
maintainers = [ lewo ];
};
machine = { ... }:
{
virtualisation.qemu.options = [ "-cdrom" "${metadataDrive}/metadata.iso" ];
services.cloud-init.enable = true;
services.openssh.enable = true;
networking.hostName = "";
};
testScript = ''
# To wait until cloud-init terminates its run
unnamed.wait_for_unit("cloud-final.service")
unnamed.succeed("cat /tmp/cloudinit-write-file | grep -q 'cloudinit'")
# install snakeoil ssh key and provision .ssh/config file
unnamed.succeed("mkdir -p ~/.ssh")
unnamed.succeed(
"cat ${snakeOilPrivateKey} > ~/.ssh/id_snakeoil"
)
unnamed.succeed("chmod 600 ~/.ssh/id_snakeoil")
unnamed.wait_for_unit("sshd.service")
# we should be able to log in as the root user, as well as the created nixos user
unnamed.succeed(
"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil root@localhost 'true'"
)
unnamed.succeed(
"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil nixos@localhost 'true'"
)
# test changing hostname via cloud-init worked
assert (
unnamed.succeed(
"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil nixos@localhost 'hostname'"
).strip()
== "test"
)
'';
}