Debian Setup Script

Das Script

• cat /usr/local/sbin/debian-setup.sh

#!/bin/bash
# Standardwerte setzen
FQDN=""
ADDR=""
GW=""
NS=""


# Optionen mit getopts parsen
while getopts "f:a:g:n:" opt; do
  case $opt in
    f) FQDN="$OPTARG" ;;
    a) ADDR="$OPTARG" ;;
    g) GW="$OPTARG" ;;
    n) NS="$OPTARG" ;;
    *) echo "Ungültige Option" >&2; exit 1 ;;
  esac
done

# Gültigkeit prüfen
if [[ -z "$FQDN" || -z "$ADDR" || -z "$GW" || -z "$NS" ]]; then
    echo "Fehlende Argumente für statische Konfiguration! Nutzung:"
    echo "$0 -f <FQDN> -a <IP/CIDR> -g <Gateway> -n <Nameserver>"
    exit 1
fi

# SHORT und DOM aus FQDN berechnen
SHORT=$(echo "$FQDN" | cut -d'.' -f1)
DOM=$(echo "$FQDN" | cut -d'.' -f2-)

echo FQDN  : $FQDN
echo ADDR  : $ADDR
echo GW    : $GW
echo NS    : $NS
echo SHORT : $SHORT
echo DOM   : $DOM

hostnamectl set-hostname $FQDN

cat<<HERE > /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto enp0s3
iface enp0s3 inet static 
 address $ADDR
 gateway $GW
 dns-nameservers $NS
 dns-search $DOM
HERE

Rechte anpassen

• chmod +x /usr/local/sbin/debian-setup.sh

Netzkonfiguration Beispiel

Parameter	Wert	Erläuterung
Netzwerk (NIC)	br0	Netzwerkebrücke
IP	192.168.6.50+XX	Statische IP
CIDR	24	Classless Inter-Domain Routing Präfixlänge
GW	192.168.6.254	GATEWAY
NS	1.1.1.1	Resolver
FQDN	test.it2XX.int	Fully Qualified Domain Name
SHORT	test	Short Name
DOM	it2XX.int	Domain Name