继续介绍zabbix监控企业应用的实例,本次介绍zabbix监控dns,我监控的dns为bind 9.8.2,本dns为公网dns,是为了解决公司内网服务器自动化所需求的dns解析,比如目前的puppet或者salt软件,如果结合dns,管理起来更方便,对于管理服务器来说,如果搬迁机房或者硬件出现故障,如果有dns解析,那么直接切换域名,30s内生效,这样故障恢复的时间就会更短,总之有dns做解析的好处多多,这里就不多介绍,如何的安装可以参考我的文章http://dl528888.blog.51cto.com/blog/2382721/1249311(centos 6.2安装bind 9.8.2 master、slave与自动修改后更新)
一、客户端操作
1.登陆dns部署的服务器,安装zabbix客户端,然后客户端的配置文件里,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/
添加一个zabbix_monitor_dns.sh文件,内容为
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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
|
这个脚本的内容就是监控bind管理工具rndc stats产生的一个dns状态信息文件named_stats.txt,这个文件的地址是被/etc/named.conf控制,默认是在/var/named/data目录
此脚本给与755权限,zabbix用户与组
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2
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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用户添加
1
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*/
1
* * * * /bin/bash /usr/local/zabbix/bin/monitor_dns.sh
|
/usr/local/zabbix/bin/monitor_dns.sh的内容为
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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/
|
这个脚本的作用是每1分钟运行一次rndc status命令,然后把named_stats.txt放到tmp目录下,如果在旧目录里已有这个文件就删除(这样做是因为rndc stats运行后会不断的把信息追加到文件里,而不是覆盖,为了统计方便才删除旧文件,在运行命令生成新文件)
给与脚本755权限
重启zabbix agent服务
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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服务端操作
1.在zabbix的web界面里连接监控dns模板
在web里选择配置-模板
然后选择导入
然后把之前下载的dns模板。
然后在选择主机加入这个模板即可。
下面是监控的效果图
1、dns的tcp/udp 53端口的监控
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
目前监控展示方式为增量变化,所以图上显示的值肯定比named_stats.txt里的少。建议还是大家自己根据需要来修改与优化,我这个只是提供一个样例而已,模拟在附件里。
附件:http://down.51cto.com/data/2363886
本文转自 dl528888 51CTO博客,原文链接:http://blog.51cto.com/dl528888/1341799,如需转载请自行联系原作者