Implement preos

hacking/preos-sh/init

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+for pkg in \
+    file \
+    linux-image-amd64 \
+    lsb-release \
+    openssh-server curl \
+    pxelinux syslinux-common grub2 \
+    gdisk util-linux lvm2 mdadm \
+    btrfs-tools e2fsprogs jfsutils reiser4progs xfsprogs; do
+    __package $pkg --state present
+done
+
+# initramfs requires /init
+__link /init --source /sbin/init --type symbolic
+
+__file /etc/network/interfaces --source - --mode 0644 << eof
+# The loopback network interface
+auto lo
+iface lo inet loopback
+
+# The primary network interface
+auto eth0
+allow-hotplug eth0
+iface eth0 inet dhcp
+eof
+
+# Steven found this out - coyping it 1:1
+# fix the bloody 'stdin: is not a tty' problem
+__line /root/.profile --line 'mesg n' --state absent
+
+__hostname --name preos

hacking/preos-sh/preos.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+TARGET_DIR="$1"
+PXE_BOOT_DIR="$2"
+
+debootstrap --include=openssh-server --arch=amd64 stable $TARGET_DIR
+chroot $TARGET_DIR /usr/bin/apt-get update
+
+# Configure the OS
+cdist config -i init --remote-exec remote-exec.sh --remote-copy remote-exec.sh $TARGET_DIR
+
+# Cleanup chroot
+chroot $TARGET_DIR /usr/bin/apt-get autoclean
+chroot $TARGET_DIR /usr/bin/apt-get clean
+chroot $TARGET_DIR /usr/bin/apt-get autoremove
+
+# Output pxe files
+cp $TARGET_DIR/boot/vmlinuz-* $PXE_BOOT_DIR/kernel
+
+cd $TARGET_DIR
+find . -print0 | cpio --null -o --format=newc | gzip -9 > $PXE_BOOT_DIR/initramfs
+
+cat << EOF > $PXE_BOOT_DIR/pxelinux.cfg/default
+DEFAULT preos
+LABEL preos
+KERNEL kernel
+INITRD initramfs
+EOF
+
+cp $TARGET_DIR/usr/lib/PXELINUX/pxelinux.0 $PXE_BOOT_DIR/pxelinux.0
+cp $TARGET_DIR/usr/lib/syslinux/modules/bios/ldlinux.c32 $PXE_BOOT_DIR/ldlinux.c32

hacking/preos-sh/remote-copy.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# echo $@
+# set -x
+src=$1; shift
+dst=$1; shift
+real_dst=$(echo $dst | sed 's,:,,')
+cp -L "$src" "$real_dst"

hacking/preos-sh/remote-exec.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# echo $@
+# set -x
+
+chroot="$1"; shift
+
+script=$(mktemp "${chroot}/tmp/chroot-${0##*/}.XXXXXXXXXX")
+trap cleanup INT TERM EXIT
+cleanup() {
+   [ $__cdist_debug ] || rm "$script"
+}
+
+echo "#!/bin/sh -l" > "$script"
+echo "$@" >> "$script"
+chmod +x "$script"
+
+relative_script="${script#$chroot}"
+
+# ensure PATH is setup
+export PATH=$PATH:/bin:/usr/bin:/sbin:/usr/sbin
+
+# run in chroot
+chroot "$chroot" "$relative_script"