1#!/bin/bash 2# example script to setup DNS for a vampired domain 3 4[ $# = 3 ] || { 5 echo "Usage: setup_dns.sh HOSTNAME DOMAIN IP" 6 exit 1 7} 8 9HOSTNAME="$(echo $1 | tr '[a-z]' '[A-Z]')" 10DOMAIN="$(echo $2 | tr '[a-z]' '[A-Z]')" 11IP="$3" 12 13RSUFFIX=$(echo $DOMAIN | sed s/[\.]/,DC=/g) 14 15[ -z "$PRIVATEDIR" ] && { 16 PRIVATEDIR=$(bin/testparm --section-name=global --parameter-name='private dir' --suppress-prompt 2> /dev/null) 17} 18 19OBJECTGUID=$(bin/ldbsearch -H "$PRIVATEDIR/sam.ldb" -b "CN=NTDS Settings,CN=$HOSTNAME,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=$RSUFFIX" objectguid|grep ^objectGUID| cut -d: -f2) 20 21echo "Found objectGUID $OBJECTGUID" 22 23echo "Running kinit for $HOSTNAME\$@$DOMAIN" 24bin/samba4kinit -e arcfour-hmac-md5 -k -t "$PRIVATEDIR/secrets.keytab" $HOSTNAME\$@$DOMAIN || exit 1 25echo "Adding $HOSTNAME.$DOMAIN" 26scripting/bin/nsupdate-gss --noverify $HOSTNAME $DOMAIN $IP 300 || { 27 echo "Failed to add A record" 28 exit 1 29} 30echo "Adding $OBJECTGUID._msdcs.$DOMAIN => $HOSTNAME.$DOMAIN" 31scripting/bin/nsupdate-gss --realm=$DOMAIN --noverify --ntype="CNAME" $OBJECTGUID _msdcs.$DOMAIN $HOSTNAME.$DOMAIN 300 || { 32 echo "Failed to add CNAME" 33 exit 1 34} 35echo "Checking" 36host $HOSTNAME.$DOMAIN 37host $OBJECTGUID._msdcs.$DOMAIN 38