共计 3061 个字符,预计需要花费 8 分钟才能阅读完成。
公司使用 BIND9 作为内部 DNS 服务器用于日常内外网的域名解析,后期我们也会打算在外网部署 DNS 服务器用于解析外网服务器的内部域名,为后期自动化运维做好准备。所以对 DNS 的监控很有必要。
监控原理描述
监控 BIND 主要通过 rndc 这个工具来监控,不同版本的 BIND,使用 rndc 显示的信息会有所不同。
[root@www ~]# whereis rndc
rndc: /usr/sbin/rndc /etc/rndc.conf /etc/rndc.key /usr/share/man/man8/rndc.8.gz
[root@www ~]# whatis rndc
rndc (8) – name server control utility
rndc-confgen (8) – rndc key generation tool
rndc.conf [rndc] (5) – rndc configuration file
CentOS5 系列默认的 BIND 版本是 9.3,CentOS6 系列默认的 BIND 版本是 9.8
[root@www ~]# cat /etc/issue.net
CentOS release 5.10 (Final)
Kernel \r on an \m
[root@www ~]# named -v
BIND 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6
[root@www ~]# rndc stats
[root@www ~]# cat /var/named/chroot/var/named/data/named_stats.txt
+++ Statistics Dump +++ (1419998880)
success 59887
referral 0
nxrrset 7457
nxdomain 8143
recursion 36479
failure 2358
— Statistics Dump — (1419998880)
[root@test1 ~]# cat /etc/issue.net
CentOS release 6.4 (Final)
Kernel \r on an \m
[root@test1 ~]# named -v
BIND 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.1
[root@test1 ~]# rndc status
version: 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.1
CPUs found: 2
worker threads: 2
number of zones: 19
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
recursive clients: 0/0/1000
tcp clients: 0/100
server is up and running
[root@test1 ~]# rndc stats
[root@test1 ~]# cat /var/named/data/named_stats.txt
+++ Statistics Dump +++ (1419998423)
++ Incoming Requests ++
++ Incoming Queries ++
++ Outgoing Queries ++
[View: default]
20 A
12 NS
21 AAAA
14 DNSKEY
[View: _bind]
++ Name Server Statistics ++
++ Zone Maintenance Statistics ++
++ Resolver Statistics ++
[Common]
[View: default]
37 IPv4 queries sent
30 IPv6 queries sent
24 IPv4 responses received
36 query retries
13 query timeouts
12 IPv4 NS address fetches
15 IPv6 NS address fetches
3 IPv4 NS address fetch failed
2 IPv6 NS address fetch failed
4 DNSSEC validation attempted
4 DNSSEC validation succeeded
10 queries with RTT 10-100ms
14 queries with RTT 100-500ms
[View: _bind]
++ Cache DB RRsets ++
[View: default]
49 A
11 NS
29 AAAA
8 DS
17 RRSIG
2 DNSKEY
[View: _bind (Cache: _bind)]
++ Socket I/O Statistics ++
38 UDP/IPv4 sockets opened
31 UDP/IPv6 sockets opened
2 TCP/IPv4 sockets opened
2 TCP/IPv6 sockets opened
37 UDP/IPv4 sockets closed
30 UDP/IPv6 sockets closed
11 TCP/IPv4 sockets closed
30 UDP/IPv6 socket connect failures
37 UDP/IPv4 connections established
12 TCP/IPv4 connections accepted
30 UDP/IPv6 send errors
++ Per Zone Query Statistics ++
— Statistics Dump — (1419998423)
一些 Zabbix 相关教程集合 :
安装部署分布式监控系统 Zabbix 2.06 http://www.linuxidc.com/Linux/2013-07/86942.htm
《安装部署分布式监控系统 Zabbix 2.06》http://www.linuxidc.com/Linux/2013-07/86942.htm
CentOS 6.3 下 Zabbix 安装部署 http://www.linuxidc.com/Linux/2013-05/83786.htm
Zabbix 分布式监控系统实践 http://www.linuxidc.com/Linux/2013-06/85758.htm
CentOS 6.3 下 Zabbix 监控 apache server-status http://www.linuxidc.com/Linux/2013-05/84740.htm
CentOS 6.3 下 Zabbix 监控 MySQL 数据库参数 http://www.linuxidc.com/Linux/2013-05/84800.htm
64 位 CentOS 6.2 下安装 Zabbix 2.0.6 http://www.linuxidc.com/Linux/2014-11/109541.htm
ZABBIX 的详细介绍 :请点这里
ZABBIX 的下载地址 :请点这里
![post-qrcode](https://www.xgss.net/wp-content/uploads/2023/07/二维码-微信公众号256x256.jpg)