Node initializer

setup-node.sh

#!/bin/bash

PARSED=$(getopt -a -n setup-node -o :n:i: --long name:,ip: -- "$@")
VALID_ARGS=$?
GATEWAY=10.210.14.1
DNS=10.210.14.2
HOSTSUFFIX=home.kagesenshi.org

usage() {
   echo "Usage: $0 -n [NAME] -i [IP]"
   exit 1
}

if [ "$VALID_ARGS" != "0" ];then
  usage
fi

eval set -- "$PARSED"
while :
do 
  case "$1" in
     -n | --name) NAME="$2"; shift 2 ;;
     -i | --ip) IP="$2"; shift 2 ;;
     --) shift; break;;
     *) echo "Invalid option $1"; usage;;

  esac
done

if [ "x$NAME" == "x" ];then 
   usage
fi

if [ "x$IP" == "x" ];then
   usage
fi

set -x

nmcli con mod enp1s0 ipv4.addresses ${IP}/24
nmcli con mod enp1s0 ipv4.gateway ${GATEWAY}
nmcli con mod enp1s0 ipv4.dns ${DNS}
nmcli con mod enp1s0 ipv4.method manual
nmcli con mod enp1s0 ipv4.dns-options ndots:1

cat << EOF > /etc/NetworkManager/conf.d/99-dns-none.conf
[main]
dns=none
rc-manager=unmanaged
EOF

cat << EOF > /etc/resolv.conf
nameserver ${DNS}
EOF

ENDIP=`echo ${IP}|cut -d'.' -f4`
echo ${NAME}.${ENDIP}.${HOSTSUFFIX} > /etc/hostname

systemctl restart NetworkManager
nmcli con up enp1s0
hostname `cat /etc/hostname`