DNS konfigurieren auf der UDM

## Unifi Network generate the dnsmasq config on the fly (on dns dhcp config changes)

DNSMASQ_CONF="/run/dnsmasq.conf.d/shared.conf"
DNSMASQ_HOSTFILE="/run/dnsmasq.conf.d/host.dns"
DNSMASQ_SOURCE="/data/myscript/host.dns"
DNSMASQ_LOG="/data/myscript/log.txt"
DATE=$(date +%F_%H:%M:%S)

##After reboot wait that config comes up as /run gets cleanup
while [ ! -e "${DNSMASQ_CONF}" ]
  do
    echo "$DATE -> DNSMASQ -> No Config" >> $DNSMASQ_LOG
    sleep 10
  done

#File exist.. do nothing, otherwise Symlink and restart kill DnsMasq

if [ -f $DNSMASQ_HOSTFILE ]; then
    #File Exist, do nothing
    exit 0
  else
    #File NOT exist, so symlink, restart.
    ln -s $DNSMASQ_SOURCE $DNSMASQ_HOSTFILE
    echo "$DATE -> DNSMASQ -> Symlink DNS Host file" >> $DNSMASQ_LOG
    sleep 2
    ## Kill current dnsmasq, ubios-udapi-server automatically restarts it
    kill $(ps -ef | awk '/dnsmas[q]/ {print $2}')
fi

## run the dnsmasq_fix script
## 2022 by gierig.
##


MAILTO=""
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin


@reboot root /data/myscript/dnsmasq_fix.sh
*/2 * * * * root /data/myscript/dnsmasq_fix.sh