Linux监控
Nagios
1 什么是监控？ 监视控制
2 监控谁？ 各种服务器
3 监控什么？ 网络流量(eth0,eth1) 服务的状态（运行，停止） 硬件资源 cpu 内存 存储
系统运行情况(总数，运行，休眠，僵尸）
[[email protected] 桌面]# uptime
09:15:02 up 15min, 4 users, load average: 0.01, 0.10, 0.08
(数越大，说明在线时间越长，越好）
[[email protected] 桌面]# top （看cpu)
4 如何监控？ 使用命令 编写脚本 监控软件
自动监控：
计划任务+监控脚本 （chkconfig crond on)
搭建监控服务器(软件 Nagios Cacti Zabbix)
5如何接收报警信息（邮件，短信，微信，即时消息）
++++++++++++++++++++++++++++++++
配置监控服务器的步骤：
1. 部署服务运行环境 httpd(nginx或Apache，php) yum -y install httpd php
2. 安装提供服务的软件
2.1 安装准备
2.2 安装监控服务软件 和 监控插件软件
2.3 修改服务配置文件
2.4 启动监控服务
3. 配置监控服务
3.1 配置监控远端服务器
3.2 配置监控自己（特殊情况,公司小只有一个网站服务器时，网站和监控服务配在一台上，所以监控本机网站）
不监控本机的交换分区
监控引导分区的使用情况
监控ftp的运行状态
指定接收报警信息的邮箱地址是[email protected]
4 配置监控报警
5 查看监控信息
设置查看访问监控页面的认证用户名和密码（不能随便指） nagiosadmin
nagios服务的监控过程：服务运行时调用插件，调用插件时，可以设置插件监控的阀值，nagios服务把监控到的值和插件指定的值比较，根据比较结果显示监控状态》
插件监控的阀值种类：警告值 错误值（值的多少由运维人员指定）
监控状态： ok正常 warning警告状态 critical 严重错误 unknow配置错误 pending正在监控
监控到的数据小于警告值 显ok 大于 警告值且小于错误值显示warning 大于错误值 显示critical
nagios服务默认监控本机哪些资源？
cpu负载
登录系统总用户数
网站服务运行状态
主机是否在线
跟分区使用量
sshd服务运行状态
[[email protected] libexec]# ./check_users -h （每个插件都会提供帮助）
_____________________________________________________
———————————————————————————————————————————————————-
搭建Nagios服务器 (LAP)环境 99监控服务器 真机客户机
————————————————————————————————————————————————————
_____________________________________________________
[[email protected] ~]# yum -y httpd php
[[email protected] ~]# service httpd restart ,chkconfig httpd on
停止 httpd： [失败]
正在启动 httpd：httpd: Could not reliably determine the server‘s fully qualified domain name, using 0.0.0.99 for ServerName
[确定]
[[email protected] ~]# echo 123 >/var/www/html/index.html
[[email protected] ~]# yum -y install elinks
[[email protected] ~]# elinks --dump http://localhost
123
[[email protected] ~]# vim /var/www/html/test.php
<?php
phpinfo();
?>
[[email protected] 桌面]# firefox http:192.168.4.99/test.php （浏览器中输这个一样http://192.168.4.99/test.php ）
[[email protected] ~]# unzip nagios.zip
[[email protected] ~]# cd nagios
[[email protected] nagios]# ls
nagios-3.2.1.tar.gz nrpe-2.12.tar.gz
nagios-plugins-1.4.14.tar.gz ntop-3.3.7.tar.gz
[[email protected] nagios]# yum -y install gcc gcc-c++
[[email protected] nagios]# useradd nagios (默认服务，监控进程的用户名，组）
[[email protected] nagios]# groupadd nagcmd
[[email protected] nagios]# usermod -G nagcmd nagios
[[email protected] nagios-3.2.1]# ./configure --help
[[email protected] nagios-3.2.1]# ./configure --with-nagios-user=nagios --with-nagios-group=nagcmd --with-command-user=nagios --with-command-group=nagcmd
[[email protected] nagios-3.2.1]# make all
[[email protected] nagios-3.2.1]# make install
[[email protected] nagios-3.2.1]# ls /usr/local/nagios
bin libexec sbin share var
[[email protected] nagios-3.2.1]# make install-init
/usr/bin/install -c -m 755 -d -o root -g root /etc/rc.d/init.d
/usr/bin/install -c -m 755 -o root -g root daemon-init /etc/rc.d/init.d/nagios
*** Init script installed ***
[[email protected] nagios-3.2.1]# ls /etc/rc.d/init.d/nagios （启动脚本安装在这）
/etc/rc.d/init.d/nagios
[[email protected] nagios-3.2.1]# make install-commandmode
/usr/bin/install -c -m 775 -o nagios -g nagcmd -d /usr/local/nagios/var/rw
chmod g+s /usr/local/nagios/var/rw
*** External command directory configured ***
[[email protected] nagios-3.2.1]# make install-config
[[email protected] nagios-3.2.1]# ls /usr/local/nagios/etc
cgi.cfg nagios.cfg objects resource.cfg
[[email protected] nagios-3.2.1]# make install-webconf
[[email protected] nagios-3.2.1]# ll /etc/rc.d/init.d/nagios （启动脚本这有）
-rwxr-xr-x. 1 root root 5178 3月 9 02:00 /etc/rc.d/init.d/nagios
[[email protected] nagios-3.2.1]# ll /etc/init.d/nagios （这下面也有启动脚本）
-rwxr-xr-x. 1 root root 5178 3月 9 02:00 /etc/init.d/nagios
[[email protected] nagios-3.2.1]# /etc/init.d/nagios status （查看服务状态）
No lock file found in /usr/local/nagios/var/nagios.lock
[[email protected] nagios-3.2.1]# /etc/init.d/nagios start （启动）
Starting nagios: done.
[[email protected] nagios-3.2.1]# /etc/init.d/nagios status （再查看）
nagios (pid 6807) is running.
[[email protected] 桌面]# http://192.168.4.99/nagios
[[email protected] nagios-3.2.1]# service httpd restart
[[email protected] 桌面]# http://192.168.4.99/nagios 打开的浏览器 选择serves选项
[[email protected] nagios-3.2.1]# vim /etc/httpd/conf.d/nagios.conf
22 AuthUserFile /usr/local/nagios/etc/htpasswd.users （查看认证用户在的文件）
[[email protected] nagios-3.2.1]# ls /usr/local/nagios/etc/htpasswd.users （文件不存在 需要创建）
ls: 无法访问/usr/local/nagios/etc/htpasswd.users: 没有那个文件
[[email protected] nagios-3.2.1]# which htpasswd
/usr/bin/htpasswd
[[email protected] nagios-3.2.1]# rpm -qf /usr/bin/htpasswd
httpd-tools-2.2.15-45.el6.x86_64
[[email protected] nagios-3.2.1]# htpasswd -h （查看帮助）
[[email protected] nagios-3.2.1]# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin （创建监控认证的用户密码,写入到文件）
New password:
Re-type new password:
Adding password for user nagiosadmin
[[email protected] nagios-3.2.1]# ls /usr/local/nagios/etc/htpasswd.users （文件创建成功）
/usr/local/nagios/etc/htpasswd.users
[[email protected] nagios-3.2.1]# cat /usr/local/nagios/etc/htpasswd.users （查看内容 用户）
nagiosadmin:SdiDPECEPUFkM
[[email protected] 桌面]# http://192.168.4.99/nagios
输入帐号 密码
按装插件：（用图形界面监控，最上面是命令操作显示）
[[email protected] nagios-3.2.1]# cd /usr/local/nagios/
[[email protected] nagios]# tar -zxvf nagios-plugins-1.4.14.tar.gz
[[email protected] nagios]# cd nagios-plugins-1.4.14
[[email protected] nagios-plugins-1.4.14]# ./configure && make && make install
[[email protected] nagios-plugins-1.4.14]# ls /usr/local/nagios/libexec/ （查看插件是否安装好）
[[email protected] 桌面] 浏览器 刷新 再点serves 等一下
监控插件的使用
/usr/local/nagios/libexec/插件名 -h
[[email protected] libexec]# ./check_users -w 1 -c 2
USERS CRITICAL - 3 users currently logged in |users=3;1;2;0 （报错）
[[email protected] libexec]# ./check_http -h
[[email protected] libexec]# ./check_http -I 192.168.4.254
HTTP WARNING: HTTP/1.1 403 Forbidden - 5159 bytes in 0.047 second response time |time=0.047352s;;;0.000000 size=5159B;;;0
[[email protected] libexec]# ./check_http -I 192.168.4.254 -p 80
HTTP WARNING: HTTP/1.1 403 Forbidden - 5159 bytes in 0.002 second response time |time=0.001934s;;;0.000000 size=5159B;;;0
[[email protected] libexec]# ./check_http -I 192.168.4.254 -p 80
拒绝连接
HTTP CRITICAL - Unable to open TCP socket
[[email protected] libexec]# ./check_http -I localhost -p 80
HTTP OK: HTTP/1.1 200 OK - 271 bytes in 0.001 second response time |time=0.001469s;;;0.000000 size=271B;;;0
[[email protected] libexec]# ./check_ping -H 192.168.4.253 -w 10,50% -c 10,60%
PING OK - Packet loss = 0%, RTA = 0.15 ms|rta=0.152000ms;10.000000;10.000000;0.000000 pl=0%;50;60;0
[[email protected] libexec]# ./check_disk -h
[[email protected] libexec]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
47G 1.6G 43G 4% /
tmpfs 499M 0 499M 0% /dev/shm
/dev/vda1 477M 36M 416M 8% /boot
[[email protected] libexec]# ./check_disk -w 50% -c 40% -p /
DISK OK - free space: / 43791 MB (96% inode=98%);| /=1560MB;23893;28671;0;47786
[[email protected] libexec]# dd if=/dev/zero of=/boot/test.txt bs=1M count=400
记录了400+0 的读入
记录了400+0 的写出
419430400字节(419 MB)已复制，7.00428 秒，59.9 MB/秒
[[email protected] libexec]# ./check_disk -w 50% -c 40% -p /boot
DISK CRITICAL - free space: /boot 15 MB (3% inode=99%);| /boot=435MB;238;285;0;476
[[email protected] libexec]# ./check_disk -w 50% -c 40% -p /dev/shm
DISK OK - free space: /dev/shm 498 MB (100% inode=99%);| /dev/shm=0MB;249;298;0;498
[[email protected] libexec]# ./check_ssh -p 22 localhost
SSH OK - OpenSSH_5.3 (protocol 2.0)
[[email protected] libexec]# ./check_ssh 192.168.4.254
SSH OK - OpenSSH_5.3 (protocol 2.0)
[[email protected] libexec]# ./check_swap
[[email protected] libexec]# ./check_procs -h
[[email protected] libexec]# ./check_procs -w 100 -c 110
PROCS OK: 100 processes
[[email protected] libexec]# ./check_procs -w 90 -c 110
PROCS WARNING: 100 processes
[[email protected] libexec]# ./check_procs -w 90 -c 95
PROCS CRITICAL: 100 processes
[[email protected] libexec]# ./check_procs -w 60 -c 65 -s R
PROCS OK: 0 processes with STATE = R
[[email protected] libexec]# ./check_procs -w 60 -c 65 -s Z
PROCS OK: 0 processes with STATE = Z
[[email protected] libexec]# ./check_procs -w 60 -c 65 -s ZR
PROCS OK: 0 processes with STATE = ZR
有些服务没有专属插件，可以根据端口号来指定（都是tcp)：
[[email protected] libexec]# ./check_tcp -H 192.168.4.254 -p 80
TCP OK - 0.000 second response time on port 80|time=0.000351s;;;0.000000;10.000000
[[email protected] libexec]# ./check_tcp -H 192.168.4.254 -p 25
拒绝连接
[[email protected] libexec]# ./check_tcp -H 192.168.4.254 -p 22
TCP OK - 0.000 second response time on port 22|time=0.000243s;;;0.000000;10.000000
____修改服务配置文件可以自己增加监控服务 （先增加监控本机服务）_____________________
[[email protected] nagios-3.2.1]# ls /usr/local/nagios
bin etc libexec sbin share var
libexec:插件目录
bin:可执行命令
etc:配置文件
sbin:cgi文件（点监控页面时出现的各种页面）
var:变化的，日志 缓存
share:配置文件
nagios服务配置文件说明？
[[email protected] nagios]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg （检查配置文件是否有错）
[[email protected] nagios]# vim /usr/local/nagios/etc/nagios.cfg
19 log_file=/usr/local/nagios/var/nagios.log
30 cfg_file=/usr/local/nagios/etc/objects/commands.cfg （设置服务运行时使用的监控插件）
31 cfg_file=/usr/local/nagios/etc/objects/contacts.cfg （设置接收报警消息的邮箱地址）
32 cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg （定义监控时间模板的文件—）
33 cfg_file=/usr/local/nagios/etc/objects/templates.cfg （定义监控模板的配置文件）
36 cfg_file=/usr/local/nagios/etc/objects/localhost.cfg （这个文件监控本机的配置文件，是里面的内容容器导致，不是文件名可以随变）
/usr/local/nagios/etc/resource.cfg 宏定义 $USER1$(插件定义目录)
_______________________
1)
[[email protected] ~]# vim /usr/local/nagios/etc/objects/commands.cfg （设置增加监控服务使用的插件）
define command {
command_name monitor_localhost_boot
command_line /usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /boot
} (这四行和下面四行只要写一个就行。这用的是常量，下面变量）
define command {
command_name monitor_localhost_boot
command_line /usr/local/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
}
define command {
command_name monitor_localhost_ftp
comman_line $USER1$/check_ftp -H localhost -p 21
}
2）设置接收报警消息的邮箱地址
[[email protected] nagios]# /etc/init.d/postfix status
master (pid 1766) 正在运行...
[[email protected] ~]# vim /usr/local/nagios/etc/objects/contacts.cfg （设置接收报警消息的邮箱地址，先邮件服务开启，如果设置的是163，一定要先能163能接收到）
3）定义监控时间模板的文件
[[email protected] ~]# vim /usr/local/nagios/etc/objects/timeperiods.cfg
28 define timeperiod{
29 timeperiod_name 24x7
30 alias 24 Hours A Day, 7 Days A Week
31 sunday 00:00-24:00
32 monday 00:00-24:00
33 tuesday 00:00-24:00
34 wednesday 00:00-24:00
35 thursday 00:00-24:00
36 friday 00:00-24:00
37 saturday 00:00-24:00
38 }
39
40
41 # ‘workhours‘ timeperiod definition
42 define timeperiod{
43 timeperiod_name workhours
44 alias Normal Work Hours
45 monday 09:00-17:00
46 tuesday 09:00-17:00
47 wednesday 09:00-17:00
48 thursday 09:00-17:00
49 friday 09:00-17:00
50 }
4）定义监控模板的配置文件
[[email protected] ~]# vim /usr/local/nagios/etc/objects/templates.cfg
5）（这个文件监控本机的配置文件，是里面的内容容器导致，不是文件名，文件名可以随变起）把增加的监控本机的服务写在监控本机配置文件中（在底下写）
[[email protected] ~]# vim /usr/local/nagios/etc/objects/localhost.cfg
define host{
use linux-server ; Name of host template to use
; This host definition will inherit all variables that are defined
; in (or inherited by) the linux-server host template definition.
host_name localhost
alias localhost
address 127.0.0.1
}
define service{
use local-service ; Name of service template to use
host_name localhost
service_description PING
check_commandcheck_ping!100.0,20%!500.0,60%
}
.........................
.........................
##################################myset################################333
define service{
use local-service ; Name of service template to use
host_name localhost
service_description boot
check_command monitor_localhost_boot!10%!15%!/boot
notifications_enabled 0
}
define service{
use local-service ; Name of service template to use
host_name localhost
service_description ftp
check_command monitor_localhost_ftp
notifications_enabled 0
}
[[email protected] nagios]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg 测试配置文件语法是否有错
6）设置访问cgi配置用户
[[email protected] nagios]# cd /usr/local/nagios/sbin/
[[email protected] sbin]# ls
avail.cgi extinfo.cgi outages.cgi statuswml.cgi tac.cgi
cmd.cgi history.cgi showlog.cgi statuswrl.cgi
config.cgi notifications.cgi status.cgi summary.cgi
[[email protected] etc]# vim /usr/local/nagios/etc/cgi.cfg 设置访问cgi配置用户
119 authorized_for_system_information=nagiosadmin （登录的用户名）
[[email protected] 桌面]# http://192.168.4.99/nagios 在浏览器中再点server刷新一下 等几分钟会再增加监控的服务
————————————————————————————————————————————————————————————————
—————————修改配置文件，增加一个监控远程主机———————————————————————————————————————
监控远端主机：
监控远端主机的公有数据192.168.4.98
监控远端主机的私有数据（服务状态）
网站 ftp 数据库 sshd
监控远端公有数据：
[[email protected] sbin]# /usr/local/nagios/libexec/check_http -H 192.168.4.98 -p 80
拒绝连接
HTTP CRITICAL - Unable to open TCP socket
[[email protected] sbin]# vim /usr/local/nagios/etc/nagios.cfg （1.在nagios主配置文件中，写上监控服务器的文件名，起服务会自动加载这）
36 cfg_file=/usr/local/nagios/etc/objects/localhost.cfg (监控本机）
37 cfg_file=/usr/local/nagios/etc/objects/otherser.cfg （监控远程的主机）
[[email protected] objects]# vim /usr/local/nagios/etc/objects/otherser.sh (2.写容器定义监控远端主机的哪些服务）
define host{
use linux-server
host_name server98
address 192.168.4.98
}
define service{
use local-service
host_name server98
service_description httpd
check_command monitor_server98_httpd
}
define service{
use local-service
host_name server98
service_description sshd
check_command monitor_server98_sshd
[[email protected] objects]# vim /usr/local/nagios/etc/objects/commands.cfg （3.设置监控远端服务使用的插件，）
..................................
..................................
######################monitor##################################################
define command {
command_name monitor_server98_httpd
command_line $USER1$/check_httpd -H 192.168.4.98 -p 80
}
define command {
command_name monitor_server98_ftp
command_line $USER1$/check_ftp -H 192.168.4.98 -p 21
}
测试：会查到除了监控自己也会监控远端。
[[email protected] 桌面]# firefox http://192.168.4.99/nagios
[[email protected] objects]# hostname localhost （退出再进，收邮件时，主机名如果是数字会有影响）
[[email protected] ~]# /etc/init.d/nagios restart
[[email protected] ~]# mail -u nagios
"/var/mail/nagios": 2 messages 2 unread
>U 1 [email protected] Thu Mar 9 08:44 32/924 "** PROBLEM Service Alert: server98/httpd is CRITICAL **"
U 2 [email protected] Thu Mar 9 08:47 32/894 "** PROBLEM Service Alert: server98/sshd is CRITICAL **"
————————————————————————————————————————————————————————————————————————————————
监控远端主机的私有数据（磁盘 进程 用户）
总数，运行，休眠，僵尸
1 在被监控的主机上安装 监控插件 （192.168.4.98)
#yum -y install gcc gcc-c++
250 tar -zxvf nagios-plugins-1.4.14.tar.gz
cd nagios-plugins-1.4.14
257 ./configure
258 make
259 make install
262 ls /usr/local/nagios/libexec/
[[email protected] ~]# /usr/local/nagios/libexec/check_users -w 3 -c 5
USERS OK - 2 users currently logged in |users=2;3;5;0
[[email protected] ~]#/usr/local/nagios/libexec/check_procs -w 50 -c 60 -s Z
PROCS OK: 0 processes with STATE = Z
[[email protected] ~]# /usr/local/nagios/libexec/check_procs -w 50 -c 60 -s R
PROCS OK: 0 processes with STATE = R
[[email protected] ~]# /usr/local/nagios/libexec/check_procs -w 50 -c 60 (总进程）
PROCS CRITICAL: 103 processes
[[email protected] ~]# /usr/local/nagios/libexec/check_disk -w 50% -c30% -p /
DISK OK - free space: / 42137 MB (92% inode=97%);| /=3215MB;23893;33450;0;47786
2 在被监控的主机上运行nrpe服务
#useradd nagios
#rpm -q openssl openssl-devel
#tar -zxvf nrpe-2.12.tar.gz
#cd nrpe-2.12
#./configure
#make all
#make install-plugin
#make install-daemon
#make install-daemon-config
#make install-xinetd
#vim /etc/xinetd.d/nrpe
only_from = 127.0.0.1 172.40.50.99
:wq
#vim /etc/services
nrpe 5666/tcp# NRPE
:wq
#yum -y install xinetd
#service xinetd start
# chkconfig xinetd on
#netstat -utnalp | grep :5666
3.改nrpe服务的主配置文件，设置获取本地的私有数据(192.168.4.98)
vim /usr/local/nagios/etc/nrpe.cfg
#command[命令名]=本机使用的插件
199 command[check_nrpe_users]=/usr/local/nagios/libexec/check_users -w 2 -c 5
200 command[check_nrpe_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20
201 command[check_nrpe_hda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/vda1
202 command[check_nrpe_root]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /
204 command[check_nrpe_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z
205 command[check_nrpe_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c 200
:wq
# /etc/init.d/xinetd restart
验证nrpe命令(192.168.4.98)
/usr/local/nagios/libexec/check_nrpe -H localhost -c check_nrpe_root
4.在监控服务器上配置（192.168.4.99）
#/usr/local/nagios/libexec/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_users (报错，没那个目录）
1）安装依赖包
# yum -y install openssl openssl-devel
2）
# tar -zxvf nrpe-2.12.tar.gz
# cd nrpe-2.12
#./configure
#make all
#make install-plugin
#ls /usr/local/nagios/libexec/check_nrpe
3）在命令行下测试
# /usr/local/nagios/libexec/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_users
USERS OK - 2 users currently logged in |users=2;2;5;0
# /usr/local/nagios/libexec/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_load
OK - load average: 0.00, 0.00, 0.00|load1=0.000;15.000;30.000;0; load5=0.000;10.000;25.000;0; load15=0.000;5.000;20.000;0;
4）把连接nrpe服务的插件定义成nagios服务可以使用的监控命令
# vim /usr/local/nagios/etc/objects/commands.cfg
...............................
define command {
command_name monitor_server98_boot
command_line $USER1$/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_boot
}
define command {
command_name monitor_server98_load
command_line $USER1$/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_load
}
define command {
command_name monitor_server98_users
command_line $USER1$/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_load
}
define command {
command_name monitor_server98_root
command_line $USER1$/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_root
}
define command {
command_name monitor_server98_zombie
command_line $USER1$/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_zombie_proc
}
define command {
command_name monitor_server98_total_procs
command_line $USER1$/check_nrpe -H 192.168.4.98 -p 5666 -c check_nrpe_total_procs
}
5)在监控主机配置文件中调用定义的监控命令
# vim /usr/local/nagios/etc/objects/otherser.cfg
#################################private###########################
define service{
use local-service
host_name server98
service_description users
check_command monitor_server98_users
}
define service{
use local-service
host_name server98
service_description root
check_command monitor_server98_root
}
define service{
use local-service
host_name server98
service_description total_procs
check_command monitor_server98_total_procs
}
define service{
use local-service
host_name server98
service_description boot
check_command monitor_server98_boot
}
define service{
use local-service
host_name server98
service_description load
check_command monitor_server98_load
}
define service{
use local-service
host_name server98
service_description zombie
check_command monitor_server98_zombie
}
6)测试配置文件是否有语法错误
# alias plj=‘/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg‘
# plj
7)重启监控服务
# /etc/init.d/nagios restart
8)查看监控信息