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netboot/dracut-module/90netboot/parse-netboot.sh

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#!/bin/sh
# Parse netboot parameters from kernel command line
BOOT_SERVER=$(getarg boot_server=)
IMAGE_VERSION=$(getarg image_version=)
[ -z "$BOOT_SERVER" ] && BOOT_SERVER="192.168.100.1"
[ -z "$IMAGE_VERSION" ] && IMAGE_VERSION="latest"
echo "BOOT_SERVER=$BOOT_SERVER" > /tmp/netboot.conf
echo "IMAGE_VERSION=$IMAGE_VERSION" >> /tmp/netboot.conf
info "Netboot: server=$BOOT_SERVER version=$IMAGE_VERSION"