Index: src/distrib/utils/embedded/files/ec2_init
diff -u /dev/null src/distrib/utils/embedded/files/ec2_init:1.1
--- /dev/null Fri Nov 30 20:53:02 2018
+++ src/distrib/utils/embedded/files/ec2_init Fri Nov 30 20:53:02 2018
@@ -0,0 +1,52 @@
+#!/bin/sh
+#
+# $NetBSD: ec2_init,v 1.1 2018/11/30 20:53:02 jmcneill Exp $
+#
+# PROVIDE: ec2_init
+# REQUIRE: NETWORKING
+# BEFORE: LOGIN
+
+$_rc_subr_loaded . /etc/rc.subr
+
+name="ec2_init"
+rcvar=${name}
+start_cmd="ec2_init"
+stop_cmd=":"
+
+METADATA_URL="http://169.254.169.254/latest/meta-data/"
+SSH_KEY_URL="public-keys/0/openssh-key"
+HOSTNAME_URL="hostname"
+
+SSH_KEY_FILE="/root/.ssh/authorized_keys"
+
+ec2_init()
+{
+ (
+ umask 022
+ # fetch the key pair from Amazon Web Services
+ EC2_SSH_KEY=$(ftp -o - "${METADATA_URL}${SSH_KEY_URL}")
+
+ if [ -n "$EC2_SSH_KEY" ]; then
+ # A key pair is associated with this instance, add it
+ # to root 'authorized_keys' file
+ mkdir -p $(dirname "$SSH_KEY_FILE")
+ touch "$SSH_KEY_FILE"
+ cd $(dirname "$SSH_KEY_FILE")
+
+ grep -q "$EC2_SSH_KEY" "$SSH_KEY_FILE"
+ if [ $? -ne 0 ]; then
+ echo "Setting EC2 SSH key pair: ${EC2_SSH_KEY##* }"
+ echo "$EC2_SSH_KEY" >> "$SSH_KEY_FILE"
+ fi
+ fi
+
+ # set hostname
+ HOSTNAME=$(ftp -o - "${METADATA_URL}${HOSTNAME_URL}")
+ echo "Setting EC2 hostname: ${HOSTNAME}"
+ echo "$HOSTNAME" > /etc/myname
+ hostname "$HOSTNAME"
+ )
+}
+
+load_rc_config $name
+run_rc_command "$1"