Add support for installing a new image on the Amazon AMI

- Check if installing on AWS EC2 platform via instance metadata.
- Configure GRUB correctly, so that boot messages are available
  via instance's console.
- Add init.d script to fetch user's EC2 public key during boot.

1 files changed, 42 insertions, 15 deletions

diff --git a/scripts/install/install-image-existing b/scripts/install/install-image-existing
index 52d129f0..b172b6f6 100755
--- a/scripts/install/install-image-existing
+++ b/scripts/install/install-image-existing
@@ -36,6 +36,21 @@ get_grub_index () {
     fi
 }
 
+# Check if installing on AWS EC2 AMI
+is_amazon_ec2_ami () {
+  ami_id_url=http://169.254.169.254/latest/meta-data/ami-id
+
+  ami_id=$(/usr/bin/curl --silent "$ami_id_url")
+  if [ -n "$ami_id" ]; then
+    echo "Installing on VyOS AMI"
+
+    # Create a temporary file to provide conditional
+    # check for init.d config in
+    # /debian/vyatta-cfg-system.postinst.in L215
+    touch ${INST_ROOT}${VYATTA_CFG_DIR}/.aws
+  fi
+}
+
 if [ `whoami` != 'root' ] ; then
   failure_exit 'This script must be run with root privileges.'
 fi
@@ -242,21 +257,33 @@ fi
 DEF_GRUB=${INST_ROOT}${vyatta_sysconfdir}/grub/default-union-grub-entry
 if [ -e "$DEF_GRUB" ]; then
   echo "Setting up grub configuration..."
-  new_index=$(get_grub_index)
-
-  def_grub_vers=/tmp/def_grub.$$
-  cp $DEF_GRUB $def_grub_vers
-  sed -i "s/menuentry \"VyOS.*(/menuentry \"VyOS $NEWNAME (/" $def_grub_vers
-  sed -i "s/menuentry \"Lost password change.*(/menuentry \"Lost password change $NEWNAME (/" $def_grub_vers
-  sed -i "sX/boot/[A-Za-z0-9\.\-]*X/boot/${NEWNAME}Xg" $def_grub_vers
-
-  old_grub_cfg=$BOOT_DIR/grub/grub.cfg
-  new_grub_cfg=/tmp/grub.cfg.$$
-  sed -n '/^menuentry/q;p' $old_grub_cfg >$new_grub_cfg
-  cat $def_grub_vers >> $new_grub_cfg
-  sed -n '/^menuentry/,${p}' $old_grub_cfg >>$new_grub_cfg
-  sed -i "s/^set default=[0-9]\+$/set default=$new_index/" $new_grub_cfg
-  mv $new_grub_cfg $old_grub_cfg
+
+  if is_amazon_ec2_ami; then
+    sed -i '/menuentry/ i\
+  menuentry '"VyOS AMI (HVM) $NEWNAME"' { \
+    linux /boot/'$NEWNAME'/vmlinuz boot=live quiet vyatta-union=/boot/'$NEWNAME' console=ttyS0 \
+    initrd /boot/'$NEWNAME'/initrd.img \
+  } \
+
+  ' $BOOT_DIR/grub/grub.cfg
+
+  else
+    new_index=$(get_grub_index)
+
+    def_grub_vers=/tmp/def_grub.$$
+    cp $DEF_GRUB $def_grub_vers
+    sed -i "s/menuentry \"VyOS.*(/menuentry \"VyOS $NEWNAME (/" $def_grub_vers
+    sed -i "s/menuentry \"Lost password change.*(/menuentry \"Lost password change $NEWNAME (/" $def_grub_vers
+    sed -i "sX/boot/[A-Za-z0-9\.\-]*X/boot/${NEWNAME}Xg" $def_grub_vers
+
+    old_grub_cfg=$BOOT_DIR/grub/grub.cfg
+    new_grub_cfg=/tmp/grub.cfg.$$
+    sed -n '/^menuentry/q;p' $old_grub_cfg >$new_grub_cfg
+    cat $def_grub_vers >> $new_grub_cfg
+    sed -n '/^menuentry/,${p}' $old_grub_cfg >>$new_grub_cfg
+    sed -i "s/^set default=[0-9]\+$/set default=$new_index/" $new_grub_cfg
+    mv $new_grub_cfg $old_grub_cfg
+  fi
 
   # Update the default image symlink used by Xen
   if [ -L $BOOT_DIR/%%default_image ]; then