using ona with dnsmasq running on a debian system

Table of Contents part 1 on debian server part 2 at the system running ona part 3 on the debian server monit

part 1 on debian server

there is more to do on the server later in the page.

mkdir -p  /fbc/dns
mkdir -p /fbc/bin

# save original hosts file. as we recreate /etc/hosts later .  see below.
cp /etc/hosts /etc/hosts-`hostname`

fbc is a vulcan abbreviation for federated business computing ;-)

part 2 at the system running ona

you'll need to change the IP address on the scp and ssh lines.

we run from /etc/cron.d/ona-local every 2 minutes

#!/bin/bash
#
# if runnning from cli, this forces update to pfsense
# also needed if we change subnet info as hosts will be same.
#
tty > /dev/null && > /root/hosts-ona

#
# 1- make a new hosts file.
#
# added set -e as had dcm fail - due to a msql backup in prpgress. , then script created a bad hosts  at dns servers  2015-08-27 .
# so make sure we exit if this line fails!
#
set -e
/opt/ona/bin/dcm.pl -r ona_sql sql=simplehosts.sql|sed -e "s/\:/      /" -e "s/://g" > /root/hosts-ona.new


#
# 2- if new hosts file is different then the old one then update dns 
#
if  ! cmp -s /root/hosts-ona.new  /root/hosts-ona  ; then
        # save file for next compare
        /bin/cp -f  /root/hosts-ona.new /root/hosts-ona
        #
        # make host file to be used by dnsmasq        
        #
        # use sed eliminate header line
        #
        cat /root/hosts-ona | sed /"ip      fqdn"/d  > /root/hosts.extra

###  *** change the IP on the following lines ***
        tty  > /dev/null &&  echo " 10.1.10.8 "      
        scp /root/hosts.extra 10.1.10.8:/fbc/dns/
#
# the following script is below.
        ssh 10.1.10.8 /fbc/bin/hosts-create

part 3 on the debian server

I have never been able to get debian dnsnmasq to have the addn-hosts work. if you figure that out let me know. to get around the issue i recreate /etc/hosts when ona updates /fbc/dns/hosts.extra

We use the program monit to monitor /fbc/dbs/hosts.extra . when the file changes a script runs.

monit

• install

apt-get install monit

• monit config :

in /etc/monit/monitrc make sure the following line is near the end and uncommented:

include /etc/monit/conf.d/*

• make the config file. put this to /etc/monit/conf.d/dnsmasq-ona-fbc :

check file hosts.extra
            with path /fbc/dns/hosts.extra
            if changed timestamp
               then exec "/fbc/bin/hosts-create"

• put this to /fbc/bin/hosts-create

#!/bin/bash
# /fbc/bin/hosts-create

if [ ! -e /fbc/dns/hosts.extra ]; then
        echo /fbc/dns/hosts.extra does not exist. so will not procede.
        exit 1
fi

tty  > /dev/null && echo ' will run hosts-create '
savelog  -l -c 3 /etc/hosts >/dev/null 2>/dev/null
HOST=`hostname`

#
#  initialize /etc/hosts
#
if [ -e /etc/hosts-$HOST ]; then
        cat /etc/hosts-$HOST > /etc/hosts
else
        echo "127.0.1.1  $HOST.fantinibakery.com  $HOST  # this line made by $0" > /etc/hosts
fi

if [ ! -e /fbc/dns/hosts.extra ]; then
        echo /fbc/dns/hosts.extra does not exist. so will not procede.
        exit 1
fi

tty  > /dev/null && echo ' will run hosts-create '
savelog  -l -c 3 /etc/hosts >/dev/null 2>/dev/null
HOST=`hostname`

#
#  initialize /etc/hosts
#
if [ -e /etc/hosts-$HOST ]; then
        cat /etc/hosts-$HOST > /etc/hosts
else
        echo "127.0.1.1  $HOST.fantinibakery.com  $HOST  # this line made by $0" > /etc/hosts
fi

#
#                 remainder is from /fbc/dns/hosts.extra 
#               which was created by ona.
#
" >> /etc/hosts

# 2015-05-20 so sed delete at ona
cat  /fbc/dns/hosts.extra  >> /etc/hosts


[ -f /etc/init.d/dnsmasq ]   && /usr/bin/killall -s 1 dnsmasq  >/dev/null