nixos/cloudinit: add cloudinit test

An iso containing metadatas is created and attached as a cdrom to the
qemu VM used for this test.

The cloudinit service is enabled. The test case ensures the root
authorized_keys file is populated and the cloudinit write_file module is
working well.

Changed files
+48
nixos
+1
nixos/release.nix
···
tests.cadvisor = hydraJob (import tests/cadvisor.nix { system = "x86_64-linux"; });
tests.chromium = (callSubTests tests/chromium.nix { system = "x86_64-linux"; }).stable;
tests.cjdns = callTest tests/cjdns.nix {};
tests.containers-ipv4 = callTest tests/containers-ipv4.nix {};
tests.containers-ipv6 = callTest tests/containers-ipv6.nix {};
tests.containers-bridge = callTest tests/containers-bridge.nix {};
···
tests.cadvisor = hydraJob (import tests/cadvisor.nix { system = "x86_64-linux"; });
tests.chromium = (callSubTests tests/chromium.nix { system = "x86_64-linux"; }).stable;
tests.cjdns = callTest tests/cjdns.nix {};
+
tests.cloud-init = callTest tests/cloud-init.nix {};
tests.containers-ipv4 = callTest tests/containers-ipv4.nix {};
tests.containers-ipv6 = callTest tests/containers-ipv6.nix {};
tests.containers-bridge = callTest tests/containers-bridge.nix {};
+47
nixos/tests/cloud-init.nix
···
···
+
{ system ? builtins.currentSystem }:
+
+
with import ../lib/testing.nix { inherit system; };
+
with import ../lib/qemu-flags.nix;
+
with pkgs.lib;
+
+
let
+
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
+
EOF
+
+
cat << EOF > $out/iso/meta-data
+
instance-id: iid-local01
+
local-hostname: "test"
+
public-keys:
+
- "should be a key!"
+
EOF
+
${pkgs.cdrkit}/bin/genisoimage -volid cidata -joliet -rock -o $out/metadata.iso $out/iso
+
'';
+
};
+
in makeTest {
+
meta = with pkgs.stdenv.lib.maintainers; {
+
maintainers = [ lewo ];
+
};
+
machine =
+
{ config, pkgs, ... }:
+
{
+
virtualisation.qemu.options = [ "-cdrom" "${metadataDrive}/metadata.iso" ];
+
services.cloud-init.enable = true;
+
};
+
testScript = ''
+
$machine->start;
+
$machine->waitForUnit("cloud-init.service");
+
$machine->succeed("cat /tmp/cloudinit-write-file | grep -q 'cloudinit'");
+
+
$machine->waitUntilSucceeds("cat /root/.ssh/authorized_keys | grep -q 'should be a key!'");
+
'';
+
}