{ system ? builtins.currentSystem }: with import ../lib/testing.nix { inherit system; }; with import ../lib/qemu-flags.nix; with pkgs.lib; let image = (import ../lib/eval-config.nix { inherit system; modules = [ ../maintainers/scripts/ec2/amazon-image.nix ../modules/testing/test-instrumentation.nix ../modules/profiles/qemu-guest.nix { ec2.hvm = true; # Hack to make the partition resizing work in QEMU. boot.initrd.postDeviceCommands = mkBefore '' ln -s vda /dev/xvda ln -s vda1 /dev/xvda1 ''; # Needed by nixos-rebuild due to the lack of network # access. Mostly copied from # modules/profiles/installation-device.nix. system.extraDependencies = [ pkgs.stdenv pkgs.busybox pkgs.perlPackages.ArchiveCpio pkgs.unionfs-fuse pkgs.mkinitcpio-nfs-utils ]; } ]; }).config.system.build.amazonImage; makeEc2Test = { name, userData, script, hostname ? "ec2-instance", sshPublicKey ? null }: let metaData = pkgs.stdenv.mkDerivation { name = "metadata"; buildCommand = '' mkdir -p $out/1.0/meta-data ln -s ${pkgs.writeText "userData" userData} $out/1.0/user-data echo "${hostname}" > $out/1.0/meta-data/hostname echo "(unknown)" > $out/1.0/meta-data/ami-manifest-path '' + optionalString (sshPublicKey != null) '' mkdir -p $out/1.0/meta-data/public-keys/0 ln -s ${pkgs.writeText "sshPublicKey" sshPublicKey} $out/1.0/meta-data/public-keys/0/openssh-key ''; }; in makeTest { name = "ec2-" + name; nodes = {}; testScript = '' my $imageDir = ($ENV{'TMPDIR'} // "/tmp") . "/vm-state-machine"; mkdir $imageDir, 0700; my $diskImage = "$imageDir/machine.qcow2"; system("qemu-img create -f qcow2 -o backing_file=${image}/nixos.qcow2 $diskImage") == 0 or die; system("qemu-img resize $diskImage 10G") == 0 or die; # Note: we use net=169.0.0.0/8 rather than # net=169.254.0.0/16 to prevent dhcpcd from getting horribly # confused. (It would get a DHCP lease in the 169.254.* # range, which it would then configure and prompty delete # again when it deletes link-local addresses.) Ideally we'd # turn off the DHCP server, but qemu does not have an option # to do that. my $startCommand = "qemu-kvm -m 768 -net nic,vlan=0,model=virtio -net 'user,vlan=0,net=169.0.0.0/8,guestfwd=tcp:169.254.169.254:80-cmd:${pkgs.micro-httpd}/bin/micro_httpd ${metaData}'"; $startCommand .= " -drive file=$diskImage,if=virtio,werror=report"; $startCommand .= " \$QEMU_OPTS"; my $machine = createMachine({ startCommand => $startCommand }); ${script} ''; }; snakeOilPrivateKey = '' -----BEGIN OPENSSH PRIVATE KEY----- b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW QyNTUxOQAAACDEPmwZv5dDPrMUaq0dDP+6eBTTe+QNrz14KBEIdhHd1QAAAJDufJ4S7nye EgAAAAtzc2gtZWQyNTUxOQAAACDEPmwZv5dDPrMUaq0dDP+6eBTTe+QNrz14KBEIdhHd1Q AAAECgwbDlYATM5/jypuptb0GF/+zWZcJfoVIFBG3LQeRyGsQ+bBm/l0M+sxRqrR0M/7p4 FNN75A2vPXgoEQh2Ed3VAAAADEVDMiB0ZXN0IGtleQE= -----END OPENSSH PRIVATE KEY----- ''; snakeOilPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMQ+bBm/l0M+sxRqrR0M/7p4FNN75A2vPXgoEQh2Ed3V EC2 test key"; in { boot-ec2-nixops = makeEc2Test { name = "nixops-userdata"; sshPublicKey = snakeOilPublicKey; # That's right folks! My user's key is also the host key! userData = '' SSH_HOST_ED25519_KEY_PUB:${snakeOilPublicKey} SSH_HOST_ED25519_KEY:${replaceStrings ["\n"] ["|"] snakeOilPrivateKey} ''; script = '' $machine->start; $machine->waitForFile("/etc/ec2-metadata/user-data"); $machine->waitForUnit("sshd.service"); $machine->succeed("grep unknown /etc/ec2-metadata/ami-manifest-path"); # We have no keys configured on the client side yet, so this should fail $machine->fail("ssh -o BatchMode=yes localhost exit"); # Let's install our client private key $machine->succeed("mkdir -p ~/.ssh"); $machine->succeed("echo '${snakeOilPrivateKey}' > ~/.ssh/id_ed25519"); $machine->succeed("chmod 600 ~/.ssh/id_ed25519"); # We haven't configured the host key yet, so this should still fail $machine->fail("ssh -o BatchMode=yes localhost exit"); # Add the host key; ssh should finally succeed $machine->succeed("echo localhost,127.0.0.1 ${snakeOilPublicKey} > ~/.ssh/known_hosts"); $machine->succeed("ssh -o BatchMode=yes localhost exit"); # Test whether the root disk was resized. my $blocks = $machine->succeed("stat -c %b -f /"); my $bsize = $machine->succeed("stat -c %S -f /"); my $size = $blocks * $bsize; die "wrong free space $size" if $size < 9.7 * 1024 * 1024 * 1024 || $size > 10 * 1024 * 1024 * 1024; # Just to make sure resizing is idempotent. $machine->shutdown; $machine->start; $machine->waitForFile("/etc/ec2-metadata/user-data"); ''; }; boot-ec2-config = makeEc2Test { name = "config-userdata"; sshPublicKey = snakeOilPublicKey; # ### http://nixos.org/channels/nixos-unstable nixos userData = '' { imports = [ ]; environment.etc.testFile = { text = "whoa"; }; } ''; script = '' $machine->start; $machine->waitForFile("/etc/testFile"); $machine->succeed("cat /etc/testFile | grep -q 'whoa'"); ''; }; }