Factory/ironic-image/scripts/rundnsmasq

#!/usr/bin/bash

set -eux

# shellcheck disable=SC1091
. /bin/ironic-common.sh
# shellcheck disable=SC1091
. /bin/tls-common.sh

export HTTP_PORT=${HTTP_PORT:-80}
DNSMASQ_EXCEPT_INTERFACE=${DNSMASQ_EXCEPT_INTERFACE:-lo}
export DNS_PORT=${DNS_PORT:-0}

wait_for_interface_or_ip
if [[ "${DNS_IP:-}" == "provisioning" ]]; then
    if [[ "${IPV}" == "4" ]]; then
      export DNS_IP="${IRONIC_IP}"
    else
      export DNS_IP="[${IRONIC_IP}]"
    fi
fi

mkdir -p /shared/tftpboot
mkdir -p /shared/html/images
mkdir -p /shared/html/pxelinux.cfg

# Copy files to shared mount
if [[ -r "${IPXE_CUSTOM_FIRMWARE_DIR}" ]]; then
    cp "${IPXE_CUSTOM_FIRMWARE_DIR}/undionly.kpxe" \
        "${IPXE_CUSTOM_FIRMWARE_DIR}/snponly.efi" \
        "/shared/tftpboot"
else
    cp /tftpboot/undionly.kpxe /tftpboot/snponly.efi /shared/tftpboot
fi

# Template and write dnsmasq.conf
# we template via /tmp as sed otherwise creates temp files in /etc directory
# where we can't write
python3.11 -c 'import os; import sys; import jinja2; sys.stdout.write(jinja2.Template(sys.stdin.read()).render(env=os.environ))' <"/templates/dnsmasq.conf.j2" >"${DNSMASQ_TEMP_DIR}/dnsmasq_temp.conf"

for iface in $(echo "$DNSMASQ_EXCEPT_INTERFACE" | tr ',' ' '); do
    sed -i -e "/^interface=.*/ a\except-interface=${iface}" "${DNSMASQ_TEMP_DIR}/dnsmasq_temp.conf"
done
cat "${DNSMASQ_TEMP_DIR}/dnsmasq_temp.conf" > "${DNSMASQ_CONF_DIR}/dnsmasq.conf"
rm "${DNSMASQ_TEMP_DIR}/dnsmasq_temp.conf"

exec /usr/sbin/dnsmasq -d -q -C "${DNSMASQ_CONF_DIR}/dnsmasq.conf"