繼續介紹zabbix監控企業應用的實例，本次介紹zabbix監控dns，我監控的dns為bind 9.8.2，本dns為公網dns，是為了解決公司內網服務器自動化所需求的dns解析，比如目前的puppet或者salt軟件，如果結合dns，管理起來更方便，對于管理服務器來說，如果搬遷機房或者硬件出現故障，如果有dns解析，那么直接切換域名，30s內生效，這樣故障恢復的時間就會更短，總之有dns做解析的好處多多，這里就不多介紹，如何的安裝可以參考我的文章http://dl528888.blog.51cto.com/blog/2382721/1249311（centos 6.2安裝bind 9.8.2 master、slave與自動修改后更新）

一、客戶端操作

1.登陸dns部署的服務器，安裝zabbix客戶端，然后客戶端的配置文件里，比如我的是/usr/loca/zabbix/conf/zabbix_agentd.conf里添加

UserParameter=check_dns[*],/usr/bin/sudo/usr/local/zabbix/bin/zabbix_monitor_dns.sh $1

然后在cd /usr/local/zabbix/bin/

添加一個zabbix_monitor_dns.sh文件，內容為

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#!/bin/bash named_stats='/tmp/named_stats.txt' ###++ Incoming Requests ++ Incoming_QUERY=`awk?'/QUERY/{print $1}'?$named_stats` Incoming_RESERVED9=`awk?'/RESERVED9/{print $1}'?$named_stats` ###++ Incoming Queries ++ Incoming_A=`grep A $named_stats |awk?'NR==1{print $1}'` Incoming_SOA=`grep SOA $named_stats |awk?'NR==1{print $1}'` Incoming_PTR=`grep PTR $named_stats |awk?'NR==1{print $1}'` Incoming_MX=`grep MX $named_stats |awk?'NR==1{print $1}'` Incoming_TXT=`grep TXT $named_stats |awk?'NR==1{print $1}'` Incoming_AAAA=`grep AAAA $named_stats |awk?'NR==1{print $1}'` Incoming_A6=`grep A6 $named_stats |awk?'NR==1{print $1}'` Incoming_IXFR=`grep IXFR $named_stats |awk?'NR==1{print $1}'` Incoming_ANY=`grep ANY $named_stats |awk?'NR==1{print $1}'` ###++ Outgoing Queries ++ Outgoing_A=`grep??"\<A\>"?$named_stats |awk?'NR==2{print $1}'` Outgoing_NS=`grep NS $named_stats |awk?'NR==1{print $1}'` Outgoing_PTR=`grep PTR $named_stats |awk?'NR==2{print $1}'` #Outgoing_AAAA=`grep NS $named_stats |awk?'NR==2{print $1}'` Outgoing_DNSKEY=`grep DNSKEY $named_stats |awk?'NR==1{print $1}'` Outgoing_ANY=`grep ANY $named_stats |awk?'NR==2{print $1}'` Outgoing_DLV=`grep DLV $named_stats |awk?'NR==2{print $1}'` ###++ Name Server Statistics ++ Statistics_IPv4_requests=`grep?"IPv4 requests received"?$named_stats |awk?'NR==1{print $1}'` Statistics_requests_received=`grep?"requests with EDNS(0) received"?$named_stats |awk?'NR==1{print $1}'` Statistics_TCP_requests=`grep?"TCP requests received"?$named_stats |awk?'NR==1{print $1}'` Statistics_queries_rejected=`grep?"recursive queries rejected"?$named_stats |awk?'NR==1{print $1}'` Statistics_responses_sent=`grep?"responses sent"?$named_stats |awk?'NR==1{print $1}'` Statistics_EDNS_sent=`grep?"responses with EDNS(0) sent"?$named_stats |awk?'NR==1{print $1}'` Statistics_successful_answer=`grep?"queries resulted in successful answer"?$named_stats |awk?'NR==1{print $1}'` Statistics_authoritative_answer=`grep?"queries resulted in authoritative answer"?$named_stats |awk?'NR==1{print $1}'` Statistics_non_authoritative_answer=`grep?"queries resulted in non authoritative answer"?$named_stats |awk?'NR==1{print $1}'` Statistics_nxrrset=`grep?"queries resulted in nxrrset"?$named_stats |awk?'NR==1{print $1}'` Statistics_SERVFAIL=`grep?"queries resulted in SERVFAIL"?$named_stats |awk?'NR==1{print $1}'` Statistics_NXDOMAIN=`grep?"queries resulted in NXDOMAIN"?$named_stats |awk?'NR==1{print $1}'` Statistics_recursion=`grep?"queries resulted in recursion"?$named_stats |awk?'NR==1{print $1}'` Statistics_received=`grep?"queries resulted in received"?$named_stats |awk?'NR==1{print $1}'` Statistics_dropped=`grep?"queries resulted in dropped"?$named_stats |awk?'NR==1{print $1}'` ###++ Resolver Statistics ++ Resolver_sent=`grep?"IPv4 queries sent"?$named_stats |awk?'NR==1{print $1}'` Resolver_received=`grep?"IPv4 responses received"?$named_stats |awk?'NR==1{print $1}'` #Resolver_NXDOMAIN_received=`grep?""?$named_stats |awk?'NR==1{print $1}'` #Resolver_responses_received=`sed -n?'49p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` #Resolver_delegations_received=`sed -n?'50p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` Resolver_query_retries=`grep?"query retries"?$named_stats |awk?'NR==1{print $1}'` Resolver_query_timeouts=`grep?"query timeouts"?$named_stats |awk?'NR==1{print $1}'` Resolver_fetches=`grep?"IPv4 NS address fetches"?$named_stats |awk?'NR==1{print $1}'` #Resolver_fetch_failed=`sed -n?'54p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` Resolver_validation_attempted=`grep?"DNSSEC validation attempted"?$named_stats |awk?'NR==1{print $1}'` Resolver_validation_succeeded=`grep?"DNSSEC validation succeeded"?$named_stats |awk?'NR==1{print $1}'` Resolver_NX_validation_succeeded=`grep?"DNSSEC NX validation succeeded"?$named_stats |awk?'NR==1{print $1}'` Resolver_RTT_10ms=`grep?"queries with RTT < 10ms"?$named_stats |awk?'NR==1{print $1}'` Resolver_RTT_100ms=`grep?"queries with RTT 10-100ms"?$named_stats |awk?'NR==1{print $1}'` Resolver_RTT_500ms=`grep?"queries with RTT 100-500ms"?$named_stats |awk?'NR==1{print $1}'` Resolver_RTT_800ms=`grep?"queries with RTT 500-800ms"?$named_stats |awk?'NR==1{print $1}'` Resolver_RTT_1600ms=`grep?"queries with RTT 800-1600ms"?$named_stats |awk?'NR==1{print $1}'` #Resolver_RTT_gt_1600ms=`sed -n?'63p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` ###++ Cache DB RRsets ++ Cache_A=`grep??"\<A\>"?$named_stats |awk?'NR==3{print $1}'` Cache_NS=`grep??"\<NS\>"?$named_stats |awk?'NR==3{print $1}'` #Cache_CNAME=`sed -n?'69p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` #Cache_SOA=`sed -n?'70p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` #Cache_PTR=`sed -n?'71p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` Cache_AAAA=`grep??"\<AAAA\>"?$named_stats |awk?'NR==2{print $1}'` Cache_DS=`grep?"DS"?$named_stats |awk?'NR==1{print $1}'` Cache_RRSIG=`grep?"RRSIG"?$named_stats |awk?'NR==1{print $1}'` Cache_NSEC=`grep?"NSEC"?$named_stats |awk?'NR==1{print $1}'` Cache_DNSKEY=`grep?"DNSKEY"?$named_stats |awk?'NR==2{print $1}'` #Cache_AAA=`sed -n?'77p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` Cache_cDLV=`grep?"DLV"?$named_stats |awk?'NR==2{print $1}'` #Cache_NXDOMAIN=`sed -n?'79p'?$named_stats |sed?'s/^[ \t]*//g'|cut -d?' '?-f?1` ###++ Socket I/O Statistics ++ Socket_UDP_opened=`grep?"UDP/IPv4 sockets opened"?$named_stats |awk?'NR==1{print $1}'` Socket_TCP_opened=`grep?"TCP/IPv4 sockets opened"?$named_stats |awk?'NR==1{print $1}'` Socket_UDP_closed=`grep?"UDP/IPv4 sockets closed"?$named_stats |awk?'NR==1{print $1}'` Socket_TCP_closed=`grep?" TCP/IPv4 sockets closed"?$named_stats |awk?'NR==1{print $1}'` Socket_UDP_established=`grep?"UDP/IPv4 connections established"?$named_stats |awk?'NR==1{print $1}'` Socket_TCP_established=`grep?"TCP/IPv4 connections accepted"?$named_stats |awk?'NR==1{print $1}'` Socket_TCP_accepted=`grep?"TCP/IPv4 recv errors"?$named_stats |awk?'NR==1{print $1}'` eval echo \$$1

這個腳本的內容就是監控bind管理工具rndc stats產生的一個dns狀態信息文件named_stats.txt，這個文件的地址是被/etc/named.conf控制，默認是在/var/named/data目錄

此腳本給與755權限，zabbix用戶與組

1 2	chmod?755?/usr/bin/sudo /usr/local/zabbix/bin/zabbix_monitor_dns.sh chown zabbix:zabbix /bin/bash /usr/local/zabbix/bin/zabbix_monitor_dns.sh

然后在crontab里使用root用戶添加

1	*/1?* * * * /bin/bash /usr/local/zabbix/bin/monitor_dns.sh

/usr/local/zabbix/bin/monitor_dns.sh的內容為

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#!/bin/bash named_stats='/var/named/data/named_stats.txt' if?[ -e $named_stats ];then ???rm -rf $named_stats fi /usr/sbin/rndc stats >>/dev/null?2>&1 mv $named_stats /tmp/

這個腳本的作用是每1分鐘運行一次rndc status命令，然后把named_stats.txt放到tmp目錄下，如果在舊目錄里已有這個文件就刪除（這樣做是因為rndc stats運行后會不斷的把信息追加到文件里，而不是覆蓋，為了統計方便才刪除舊文件，在運行命令生成新文件）

給與腳本755權限

重啟zabbix agent服務

1 2	ps -ef|grep zabbix|grep -v grep|awk?'{print $2}'|xargs kill -9 /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/conf/zabbix_agentd.conf

二、zabbix服務端操作

1.在zabbix的web界面里連接監控dns模板

在web里選擇配置-模板

然后選擇導入

然后把之前下載的dns模板。

然后在選擇主機加入這個模板即可。

下面是監控的效果圖

1、dns的tcp/udp 53端口的監控

2、Incoming Requests

3、Incoming Queries

4、Outgoing Queries

5、Name Server Statistics

6、Resolver Statistics

7、Cache DB RRsets

8、Socket I/O Statistics

目前監控展示方式為增量變化，所以圖上顯示的值肯定比named_stats.txt里的少。建議還是大家自己根據需要來修改與優化，我這個只是提供一個樣例而已，模擬在附件里。

本文出自 “吟—技術交流” 博客，請務必保留此出處http://dl528888.blog.51cto.com/2382721/1341799

轉載于:https://www.cnblogs.com/fatt/p/4383269.html

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