fog-moi-le-hostname.sh

#!/bin/bash

# Comment installer le script ?
#
# Copier le contenu dans /etc/network/if-up.d/000-fog-moi-le-hostname

mac=`ifconfig eth0 | grep HWaddr | sed -e "s/.* HWaddr //"`
oldhost=`hostname`
tmp=/tmp/fog-hostname
fogserver=fogserver.plasci.local

(
rm -f $tmp
wget -q -O- http://$fogserver/fog/service/hostname.php?mac=$mac |
while read -r line
do
	if echo "$line" | grep -q "!ok"; then
		hostname=`echo "$line" | sed -e 's/.*=//'`
		if [ -n "$hostname" ]; then
			echo $hostname > $tmp
			if [ "$hostname" = "$oldhost" ]; then
				echo "[PLASCI-FOG] Hostname already $hostname, nothing to change!"
			else
				echo "[PLASCI-FOG] Hostname was $oldhost, changing to $hostname..."

				hostname $hostname
				echo $hostname > /etc/hostname
				sed -i /etc/hosts -e "s/127\.0\.1\.1.*/127.0.1.1\t`cat $tmp`/"
				echo "[PLASCI-FOG] OK, hostname changed!"
			fi
			exit 0
		else
			echo "[PLASCI-FOG] Empty hostname received."
		fi
	fi
done

if [ ! -f $tmp ]; then
	echo "[PLASCI-FOG] Cannot find hostname on server. Is network up?"
fi

) | logger