ignition/02_ignition_firstboot

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#!/bin/sh
exec tail -n +3 $0
# On read-only systems /boot/writable provides a writeable
# subvolume which also stores the Ignition flag file.
set flagpath="/boot/writable"
# Determine if this is a first boot and set the variable
# to be used later on the kernel command line.
set ignition_firstboot=""
if ! [ -f "${flagpath}/firstboot_happened" ]; then
# This defaults to DHCP in dracut
set ignition_network_kcmdline=''
# source in the `ignition.firstboot` file which could override the
# above $ignition_network_kcmdline with static networking config.
# This override feature is primarily used by coreos-installer to
# persist static networking config provided during install to the
# first boot of the machine.
if [ -e "${flagpath}/ignition.firstboot" ]; then
source "${flagpath}/ignition.firstboot"
fi
set ignition_firstboot="ignition.firstboot $ignition_network_kcmdline"
fi