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* Initialise the Nix database in the VM.

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* Set the hostname at startup.
* Mount the ephemeral data disk (/dev/sda2).


svn path=/nixos/trunk/; revision=19619
This commit is contained in:
Eelco Dolstra 2010-01-22 17:31:23 +00:00
parent 3e3448a7df
commit 12a0a68749
2 changed files with 41 additions and 33 deletions
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4
modules/system/boot/stage-2-init.sh
View File

@ -4,8 +4,8 @@
# If no `systemConfig' parameter is specified on the kernel command # If no `systemConfig' parameter is specified on the kernel command
# line, use `/system' as a fallback. # line, use a fallback.
systemConfig=/system systemConfig=/nix/var/nix/profiles/system
# Print a greeting. # Print a greeting.

70
modules/virtualisation/amazon-image.nix
View File

@ -18,7 +18,8 @@ with pkgs.lib;
} }
'' ''
# Create an empty filesysten and mount it. # Create an empty filesysten and mount it.
${pkgs.e2fsprogs}/sbin/mkfs.ext3 /dev/vda ${pkgs.e2fsprogs}/sbin/mkfs.ext3 -L nixos /dev/vda
${pkgs.e2fsprogs}/sbin/tune2fs -c 0 -i 0 /dev/vda
mkdir /mnt mkdir /mnt
mount /dev/vda /mnt mount /dev/vda /mnt
@ -28,35 +29,47 @@ with pkgs.lib;
mkdir -p /mnt/nix/store mkdir -p /mnt/nix/store
cp -prvd $storePaths /mnt/nix/store/ cp -prvd $storePaths /mnt/nix/store/
# Amazon assumes that there is a /sbin/init, so symlink it # Register the paths in the Nix database.
# to the stage 2 init script. Since we cannot set the path printRegistration=1 perl ${pkgs.pathsFromGraph} $ORIG_TMPDIR/closure | \
# to the system configuration via the systemConfig kernel chroot /mnt ${config.environment.nix}/bin/nix-store --load-db
# parameter, use a /system symlink.
mkdir -p /mnt/sbin # Create the system profile to allow nixos-rebuild to work.
ln -s ${config.system.build.bootStage2} /mnt/sbin/init chroot /mnt ${config.environment.nix}/bin/nix-env \
ln -s ${config.system.build.toplevel} /mnt/system -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
# Amazon assumes that there is a /sbin/init, so symlink it
# to the stage 2 init script.
mkdir -p /mnt/sbin
ln -s /nix/var/nix/profiles/system/init /mnt/sbin/init
set -x
sync
umount /mnt umount /mnt
sync
'' ''
); );
# On EC2 we don't get to supply our own kernel, so we can't load any # On EC2 we don't get to supply our own kernel, so we can't load any
# modules. However, dhclient fails if the ipv6 module isn't loaded, # modules. However, dhclient fails if the ipv6 module isn't loaded,
# unless it's compiled without IPv6 support. So do that. # unless it's compiled without IPv6 support. So do that.
nixpkgs.config.packageOverrides = pkgsOld: nixpkgs.config.packageOverrides = pkgsOld:
{ dhcp = pkgs.lib.overrideDerivation pkgsOld.dhcp (oldAttrs: { dhcp = pkgs.lib.overrideDerivation pkgsOld.dhcp (oldAttrs:
{ configureFlags = "--disable-dhcpv6"; { configureFlags = "--disable-dhcpv6";
}); });
}; };
# The root filesystem is mounted by Amazon's kernel/initrd. fileSystems =
fileSystems = [ ]; [ { mountPoint = "/";
device = "/dev/disk/by-label/nixos";
}
{ mountPoint = "/mnt";
device = "/dev/sda2";
}
];
swapDevices = swapDevices =
[ { device = "/dev/sda2"; } ]; [ { device = "/dev/sda3"; } ];
# There are no virtual consoles. # There are no virtual consoles.
services.mingetty.ttys = [ ]; services.mingetty.ttys = [ ];
@ -64,17 +77,11 @@ with pkgs.lib;
# Allow root logins only using the SSH key that the user specified # Allow root logins only using the SSH key that the user specified
# at instance creation time. # at instance creation time.
services.sshd.enable = true; services.sshd.enable = true;
#services.sshd.permitRootLogin = "without-password"; services.sshd.permitRootLogin = "without-password";
boot.postBootCommands = # Obtain the SSH key and host name at startup time.
'' jobs.fetchEC2Data =
echo xyzzy_foobar | ${pkgs.pwdutils}/bin/passwd --stdin { name = "fetch-ec2-data";
'';
# Obtain the SSH key at startup time.
/*
jobs.fetchSSHKey =
{ name = "fetch-ssh-key";
startOn = "ip-up"; startOn = "ip-up";
@ -82,7 +89,6 @@ with pkgs.lib;
script = script =
'' ''
set -x
echo "obtaining SSH key..." echo "obtaining SSH key..."
mkdir -p /root/.ssh mkdir -p /root/.ssh
${pkgs.curl}/bin/curl --retry 3 --retry-delay 0 --fail \ ${pkgs.curl}/bin/curl --retry 3 --retry-delay 0 --fail \
@ -96,7 +102,9 @@ with pkgs.lib;
chmod 600 /root/.ssh/authorized_keys chmod 600 /root/.ssh/authorized_keys
rm -f /root/key.pub rm -f /root/key.pub
fi fi
echo "setting host name..."
${pkgs.nettools}/bin/hostname $(${pkgs.curl}/bin/curl http://169.254.169.254/1.0/meta-data/hostname)
''; '';
}; };
*/
} }