forked from mirrors/nixpkgs
116 lines
4 KiB
Nix
116 lines
4 KiB
Nix
{ config, pkgs, ... }:
|
|
|
|
with pkgs.lib;
|
|
|
|
{
|
|
imports = [ ../profiles/qemu-guest.nix ../profiles/headless.nix ./ec2-data.nix ];
|
|
|
|
system.build.novaImage =
|
|
pkgs.vmTools.runInLinuxVM (
|
|
pkgs.runCommand "nova-image"
|
|
{ preVM =
|
|
''
|
|
mkdir $out
|
|
diskImage=$out/image
|
|
${pkgs.vmTools.qemu}/bin/qemu-img create -f raw $diskImage "4G"
|
|
mv closure xchg/
|
|
'';
|
|
buildInputs = [ pkgs.utillinux pkgs.perl ];
|
|
exportReferencesGraph =
|
|
[ "closure" config.system.build.toplevel ];
|
|
}
|
|
''
|
|
# Create a single / partition.
|
|
${pkgs.parted}/sbin/parted /dev/vda mklabel msdos
|
|
${pkgs.parted}/sbin/parted /dev/vda -- mkpart primary ext2 1M -1s
|
|
. /sys/class/block/vda1/uevent
|
|
mknod /dev/vda1 b $MAJOR $MINOR
|
|
|
|
# Create an empty filesystem and mount it.
|
|
${pkgs.e2fsprogs}/sbin/mkfs.ext3 -L nixos /dev/vda1
|
|
${pkgs.e2fsprogs}/sbin/tune2fs -c 0 -i 0 /dev/vda1
|
|
mkdir /mnt
|
|
mount /dev/vda1 /mnt
|
|
|
|
# The initrd expects these directories to exist.
|
|
mkdir /mnt/dev /mnt/proc /mnt/sys
|
|
mount --bind /proc /mnt/proc
|
|
mount --bind /dev /mnt/dev
|
|
mount --bind /sys /mnt/sys
|
|
|
|
# Copy all paths in the closure to the filesystem.
|
|
storePaths=$(perl ${pkgs.pathsFromGraph} /tmp/xchg/closure)
|
|
|
|
mkdir -p /mnt/nix/store
|
|
${pkgs.rsync}/bin/rsync -av $storePaths /mnt/nix/store/
|
|
|
|
# Register the paths in the Nix database.
|
|
printRegistration=1 perl ${pkgs.pathsFromGraph} /tmp/xchg/closure | \
|
|
chroot /mnt ${config.environment.nix}/bin/nix-store --load-db
|
|
|
|
# Create the system profile to allow nixos-rebuild to work.
|
|
chroot /mnt ${config.environment.nix}/bin/nix-env \
|
|
-p /nix/var/nix/profiles/system --set ${config.system.build.toplevel}
|
|
|
|
# `nixos-rebuild' requires an /etc/NIXOS.
|
|
mkdir -p /mnt/etc
|
|
touch /mnt/etc/NIXOS
|
|
|
|
# Install a configuration.nix.
|
|
mkdir -p /mnt/etc/nixos
|
|
cp ${./nova-config.nix} /mnt/etc/nixos/configuration.nix
|
|
|
|
# Generate the GRUB menu.
|
|
chroot /mnt ${config.system.build.toplevel}/bin/switch-to-configuration boot
|
|
|
|
umount /mnt/proc /mnt/dev /mnt/sys
|
|
umount /mnt
|
|
''
|
|
);
|
|
|
|
fileSystems."/".device = "/dev/disk/by-label/nixos";
|
|
|
|
boot.kernelParams = [ "console=ttyS0" ];
|
|
|
|
boot.loader.grub.version = 2;
|
|
boot.loader.grub.device = "/dev/vda";
|
|
boot.loader.grub.timeout = 0;
|
|
|
|
# Put /tmp and /var on /ephemeral0, which has a lot more space.
|
|
# Unfortunately we can't do this with the `fileSystems' option
|
|
# because it has no support for creating the source of a bind
|
|
# mount. Also, "move" /nix to /ephemeral0 by layering a unionfs-fuse
|
|
# mount on top of it so we have a lot more space for Nix operations.
|
|
/*
|
|
boot.initrd.postMountCommands =
|
|
''
|
|
mkdir -m 1777 -p $targetRoot/ephemeral0/tmp
|
|
mkdir -m 1777 -p $targetRoot/tmp
|
|
mount --bind $targetRoot/ephemeral0/tmp $targetRoot/tmp
|
|
|
|
mkdir -m 755 -p $targetRoot/ephemeral0/var
|
|
mkdir -m 755 -p $targetRoot/var
|
|
mount --bind $targetRoot/ephemeral0/var $targetRoot/var
|
|
|
|
mkdir -p /unionfs-chroot/ro-nix
|
|
mount --rbind $targetRoot/nix /unionfs-chroot/ro-nix
|
|
|
|
mkdir -p /unionfs-chroot/rw-nix
|
|
mkdir -m 755 -p $targetRoot/ephemeral0/nix
|
|
mount --rbind $targetRoot/ephemeral0/nix /unionfs-chroot/rw-nix
|
|
unionfs -o allow_other,cow,nonempty,chroot=/unionfs-chroot,max_files=32768 /rw-nix=RW:/ro-nix=RO $targetRoot/nix
|
|
'';
|
|
|
|
boot.initrd.supportedFilesystems = [ "unionfs-fuse" ];
|
|
*/
|
|
|
|
# Since Nova allows VNC access to instances, it's nice to start to
|
|
# start a few virtual consoles.
|
|
services.mingetty.ttys = [ "tty1" "tty2" ];
|
|
|
|
# Allow root logins only using the SSH key that the user specified
|
|
# at instance creation time.
|
|
services.openssh.enable = true;
|
|
services.openssh.permitRootLogin = "without-password";
|
|
}
|