Shows recursive queries on your BIND server. Triggers on excesive usage. Best for caching servers.

Instalation description:

/etc/zabbix/zabbix_agentd.d/userparameter_bind.conf:

UserParameter=bind.tcpcl,/bin/cat /tmp/namedtcp.log
UserParameter=bind.udpcl,/bin/cat /tmp/namedudp.log

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cron every 30 sec:
 /var/spool/cron/root: 

SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
0-59 * * * *  /etc/zabbix/custom/named.sh
0-59 * * * * ( sleep 30; /etc/zabbix/custom/named.sh )

chmod +x /etc/zabbix/custom/named.sh:

#!/bin/bash
/usr/local/named/sbin/rndc status > /tmp/rndcstatus
cat /tmp/rndcstatus | grep tcp | awk '{ print $3 }' | cut -d '/' -f 1  > /tmp/namedtcp.log
cat /tmp/rndcstatus | grep recursive | awk '{ print $3 }' | cut -d '/' -f 1  > /tmp/namedudp.log

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add key for rndc in config of named