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aws: Add support for a script that can be executed at first boot

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Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
This commit is contained in:
Michael Tremer
2018-07-20 16:19:46 +01:00
parent ba06294341
commit 4e4c122c58
2 changed files with 29 additions and 12 deletions
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33
src/initscripts/helper/aws-setup
View File

@@ -6,7 +6,7 @@
get() { get() {
local file="${1}" local file="${1}"
wget -qO - "http://169.254.169.254/latest/meta-data/${file}" wget -qO - "http://169.254.169.254/latest/${file}"
} }
to_address() { to_address() {
@@ -64,7 +64,7 @@ find_interface() {
} }
import_aws_configuration() { import_aws_configuration() {
local instance_id="$(get instance-id)" local instance_id="$(get meta-data/instance-id)"
boot_mesg "Importing AWS configuration for instance ${instance_id}..." boot_mesg "Importing AWS configuration for instance ${instance_id}..."
@@ -72,7 +72,7 @@ import_aws_configuration() {
echo "${instance_id}" > /var/run/aws-instance-id echo "${instance_id}" > /var/run/aws-instance-id
# Initialise system settings # Initialise system settings
local hostname=$(get local-hostname) local hostname=$(get meta-data/local-hostname)
# Set hostname # Set hostname
if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then if ! grep -q "^HOSTNAME=" /var/ipfire/main/settings; then
@@ -94,10 +94,10 @@ import_aws_configuration() {
# Import SSH keys for setup user # Import SSH keys for setup user
local line local line
for line in $(get "public-keys/"); do for line in $(get "meta-data/public-keys/"); do
local key_no="${line%=*}" local key_no="${line%=*}"
local key="$(get public-keys/${key_no}/openssh-key)" local key="$(get meta-data/public-keys/${key_no}/openssh-key)"
if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then if [ -n "${key}" ] && ! grep -q "^${key}$" "/home/setup/.ssh/authorized_keys" 2>/dev/null; then
mkdir -p "/home/setup/.ssh" mkdir -p "/home/setup/.ssh"
chmod 700 "/home/setup/.ssh" chmod 700 "/home/setup/.ssh"
@@ -109,6 +109,9 @@ import_aws_configuration() {
fi fi
done done
# Download user-data
local user_data="$(get user-data)"
# Import any DNS server settings # Import any DNS server settings
eval $(/usr/local/bin/readhash <(grep -E "^DNS([0-9])=" /var/ipfire/ethernet/settings 2>/dev/null)) eval $(/usr/local/bin/readhash <(grep -E "^DNS([0-9])=" /var/ipfire/ethernet/settings 2>/dev/null))
@@ -119,24 +122,24 @@ import_aws_configuration() {
: > /var/ipfire/ethernet/settings : > /var/ipfire/ethernet/settings
local mac local mac
for mac in $(get network/interfaces/macs/); do for mac in $(get meta-data/network/interfaces/macs/); do
# Remove trailing slash # Remove trailing slash
mac="${mac//\//}" mac="${mac//\//}"
local device_number="$(get "network/interfaces/macs/${mac}/device-number")" local device_number="$(get "meta-data/network/interfaces/macs/${mac}/device-number")"
local interface_id="$(get "network/interfaces/macs/${mac}/interface-id")" local interface_id="$(get "meta-data/network/interfaces/macs/${mac}/interface-id")"
# First IPv4 address # First IPv4 address
local ipv4_address="$(get "network/interfaces/macs/${mac}/local-ipv4s" | head -n1)" local ipv4_address="$(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" | head -n1)"
local ipv4_address_num="$(to_integer "${ipv4_address}")" local ipv4_address_num="$(to_integer "${ipv4_address}")"
# Get VPC subnet # Get VPC subnet
local vpc="$(get "network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")" local vpc="$(get "meta-data/network/interfaces/macs/${mac}/vpc-ipv4-cidr-block")"
local vpc_netaddress="${vpc%/*}" local vpc_netaddress="${vpc%/*}"
local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")" local vpc_netaddress_num="$(to_integer "${vpc_netaddress}")"
# Get subnet size # Get subnet size
local subnet="$(get "network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")" local subnet="$(get "meta-data/network/interfaces/macs/${mac}/subnet-ipv4-cidr-block")"
local prefix="${subnet#*/}" local prefix="${subnet#*/}"
local netmask="$(prefix2netmask "${prefix}")" local netmask="$(prefix2netmask "${prefix}")"
@@ -174,7 +177,7 @@ import_aws_configuration() {
) >> /var/ipfire/ethernet/settings ) >> /var/ipfire/ethernet/settings
# Import aliases for RED # Import aliases for RED
for alias in $(get "network/interfaces/macs/${mac}/local-ipv4s" | tail -n +2); do for alias in $(get "meta-data/network/interfaces/macs/${mac}/local-ipv4s" | tail -n +2); do
echo "${alias},on," echo "${alias},on,"
done > /var/ipfire/ethernet/aliases done > /var/ipfire/ethernet/aliases
;; ;;
@@ -246,6 +249,12 @@ import_aws_configuration() {
# This script has now completed the first steps of setup # This script has now completed the first steps of setup
touch /var/ipfire/main/firstsetup_ok touch /var/ipfire/main/firstsetup_ok
# Save user-data script to be executed later
if [ "${user_data:0:2}" = "#!" ]; then
echo "${user_data}" > /tmp/aws-user-data.script
chmod 700 /tmp/aws-user-data.script
fi
fi fi
# All done # All done

8
src/initscripts/system/aws
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@@ -60,6 +60,14 @@ case "${1}" in
# End DHCP client immediately # End DHCP client immediately
dhclient -sf /etc/rc.d/helper/aws-setup -r "${intf}" &>/dev/null dhclient -sf /etc/rc.d/helper/aws-setup -r "${intf}" &>/dev/null
# Run AWS user-data script
if [ -x "/tmp/aws-user-data.script" ]; then
/tmp/aws-user-data.script
# Delete the script right away
rm /tmp/aws-user-data.script
fi
exit 0 exit 0
;; ;;