服務器端IP地址：192.168.100.172
客戶端IP地址：192.168.100.117
1、安裝基本環境：
[root@dawning-01 src]# yum install openssl openssl-devel gcc sysstat
2、創建用戶：
[root@dawning-01 src]# groupadd nagios
[root@dawning-01 src]# useradd -g nagios -s /sbin/nologin nagios
[root@dawning-01 src]# passwd nagios
3、解壓縮：
[root@dawning-01 src]# tar -zxvf nagios-plugins-1.4.16.tar.gz
[root@dawning-01 src]# tar -zxvf nrpe-2.14.tar.gz
[root@dawning-01 src]# cd nagios-plugins-1.4.16
4、編譯、安裝nagios-plugins：
[root@dawning-01 nagios-plugins-1.4.16]# ./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios
[root@dawning-01 nagios-plugins-1.4.16]# make
[root@dawning-01 nagios-plugins-1.4.16]# make install
5、檢查：
[root@dawning-01 nagios-plugins-1.4.16]# ll /usr/local/nagios/
total 12
drwxr-xr-x 2 root root 4096 Dec 8 17:43 include
drwxr-xr-x 2 root root 4096 Dec 8 17:43 libexec
drwxr-xr-x 3 root root 4096 Dec 8 17:43 share
6、編譯、安裝nrpe：
[root@dawning-01 nagios-plugins-1.4.16]# cd /usr/local/src/nrpe-2.14
[root@dawning-01 nrpe-2.14]# ./configure --prefix=/usr/local/nagios --enable-ssl --with-nagios-user=nagios --with-nagios-group=nagios
[root@dawning-01 nrpe-2.14]# make all
[root@dawning-01 nrpe-2.14]# make install-plugin
[root@dawning-01 nrpe-2.14]# make install-daemon
[root@dawning-01 nrpe-2.14]# make install-daemon-config
[root@dawning-01 nrpe-2.14]# make install-xinetd（若不配置依賴xinetd服務，可不安裝。）
[root@dawning-01 nrpe-2.14]# yum install xinetd（若不配置依賴xinetd服務，可不安裝。）
配置NRPE以守護進程運行：
6-1、更改/etc/xinetd.d/nrpe文件，設置允許nagios服務器連接,如nagios服務器的ip爲192.168.100.172：
[root@dawning-01 nrpe-2.14]# vim /etc/xinetd.d/nrpe
only_from = 127.0.0.1 192.168.100.172
6-2、在/etc/services結尾增加：
[root@dawning-01 nrpe-2.14]# vim /etc/services
nrpe 5666/tcp # NRPE
6-3、啓動xinetd，並檢查5666（TCP）端口是否正常運行在xinetd服務之下：
# service xinetd restart
[root@dawning-01 nrpe-2.14]# netstat -natlp | grep 5666
tcp 0 0 :::5666 :::* LISTEN 22021/xinetd
7、修改相關權限：
[root@dawning-01 nrpe-2.14]# chown nagios:nagios /usr/local/nagios/
[root@dawning-01 nrpe-2.14]# chown -R nagios.nagios /usr/local/nagios/libexec/
8、檢查結果：
[root@dawning-01 nrpe-2.14]# ll /usr/local/nagios/
total 20
drwxrwxr-x 2 nagios nagios 4096 Dec 8 17:53 bin
drwxrwxr-x 2 nagios nagios 4096 Dec 8 17:53 etc
drwxr-xr-x 2 root root 4096 Dec 8 17:43 include
drwxrwxr-x 2 nagios nagios 4096 Dec 8 17:52 libexec
drwxr-xr-x 3 root root 4096 Dec 8 17:43 share
9、修改相關配置文件：
[root@dawning-01 nrpe-2.14]# vim /usr/local/nagios/etc/nrpe.cfg
第81行，添加nagios服務器的IP地址。
allowed_hosts=127.0.0.1,192.168.100.172
10、修改防火牆相關配置：
[root@dawning-01 nrpe-2.14]# vim /etc/sysconfig/iptables
開放5666端口：
-A INPUT -m state --state NEW -m tcp -p tcp --dport 5666 -j ACCEPT
[root@dawning-01 nrpe-2.14]# servcie iptables restart
11、檢查本機的nrpe配置是否正確：
[root@dawning-01 nrpe-2.14]# /usr/local/nagios/libexec/check_nrpe -H 127.0.0.1
NRPE v2.14
12、在服務器端配置相應項，並測試服務器與客戶端的通信：
[root@had04 ~]# vim /usr/local/nagios/etc/nrpe.cfg
allowed_hosts=127.0.0.1,192.168.100.117
[root@had04 ~]# service nagios restart
[root@had04 ~]# /usr/local/nagios/libexec/check_nrpe -H 192.168.100.117
NRPE v2.14
13、根據本機實際環境添加需要監控的項目：
[root@had04 ~]# vim /usr/local/nagios/etc/Linuxservers/192.168.100.117.cfg
[root@had04 ~]# cat /usr/local/nagios/etc/Linuxservers/192.168.100.117.cfg
###############################################################################
# LOCALHOST.CFG - SAMPLE OBJECT CONFIG FILE FOR MONITORING THIS MACHINE
#
# Last Modified: 05-31-2007
#
# NOTE: This config file is intended to serve as an *extremely* simple
# example of how you can create configuration entries to monitor
# the local (Linux) machine.
#
###############################################################################
###############################################################################
###############################################################################
#
# HOST DEFINITION
#
###############################################################################
###############################################################################
# Define a host for the local machine
define host{
use linux-server,host-pnp4 ; 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 192.168.100.117
alias 192.168.100.117
address 192.168.100.117
parents linksys-Ruijie
icon_image linux40.gif
statusmap_image linux40.gd2
2d_coords 500,200
3d_coords 500,200,100
}
###############################################################################
###############################################################################
#
# HOST GROUP DEFINITION
#
###############################################################################
###############################################################################
# Define an optional hostgroup for Linux machines
#define hostgroup{
# hostgroup_name linux-servers ; The name of the hostgroup
# alias Linux Servers ; Long name of the group
# members * ; Comma separated list of hosts that belong to this group
# }
###############################################################################
###############################################################################
#
# SERVICE DEFINITIONS
#
###############################################################################
###############################################################################
# Define a service of "CPU_stat" with the local machine
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description CPU-stats
check_command check_nrpe!check_cpu
}
# Define a service to "ping" the local machine
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description PING
check_command check_nrpe!check_ping
}
# Define a service to check the disk space of the root partition
# on the local machine. Warning if < 20% free, critical if
# < 10% free space on partition.
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Root Partition
check_command check_nrpe!check_sda1
}
# Define a service to check the number of currently logged in
# users on the local machine. Warning if > 20 users, critical
# if > 50 users.
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Current Users
check_command check_nrpe!check_users
}
# Define a service to check the number of currently running procs
# on the local machine. Warning if > 250 processes, critical if
# > 400 users.
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Total Processes
check_command check_nrpe!check_total_procs
#process_perf_data 1
}
# Define a service to check the load on the local machine.
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Current Load
check_command check_nrpe!check_load
}
# Define a service to check the swap usage the local machine.
# Critical if less than 10% of swap is free, warning if less than 20% is free
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Swap Usage
check_command check_nrpe!check_swap
}
# Define a service to check SSH on the local machine.
# Disable notifications for this service by default, as not all users may have SSH enabled.
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description SSH
check_command check_nrpe!check_ssh
notifications_enabled 1
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Zombie_Procs
check_command check_nrpe!check_zombie_procs
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Check_Disk
check_command check_nrpe!check_disk
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Check_Uptime
check_command check_nrpe!check_uptime
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Check_Memory
check_command check_nrpe!check_memory
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Check_IOSTAT
check_command check_nrpe!check_iostat
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description TCP_stat
check_command check_nrpe!check_tcpstat
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description Traffic_eth0
check_command check_nrpe!check_net_traffic_eth0
}
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description check_procs_uGuard
check_command check_nrpe!check_procs_uGuard
}
14、解釋以上標註服務--添加服務實現對linux主機eth0網卡流量的監控：
確認客戶端/usr/local/nagios/libexec/目錄下存在監控文件check_net_traffic.sh。
在客戶端執行命令：
[root@dawning-01 libexec]# /usr/local/nagios/libexec/check_net_traffic.sh -d eth0 -w 2M -c 3M
This script is First run! TIME="2016-03-05 22:30:26";RX=33205684942;TX=27540050551;DEV=eth0
[root@dawning-01 libexec]# /usr/local/nagios/libexec/check_net_traffic.sh -d eth0 -w 2M -c 3M
eth0 Traffic is OK - In: 940 B/s Out: 775 B/s interval: 37s |in=940;2097152;3145728;0;1073741824 out=775;2097152;3145728;0;1073741824
check_net_traffic.sh相關參數說明：
[root@dawning-01 libexec]# /usr/local/nagios/libexec/check_net_traffic.sh -h
/usr/local/nagios/libexec/check_net_traffic.sh: illegal option -- h
Usage: /usr/local/nagios/libexec/check_net_traffic.sh -d [ eth|bond ]
For example: /usr/local/nagios/libexec/check_net_traffic.sh -d bond0 -w 100[B|K|M|G] -c 200[B|K|M|G]
15、添加進程中包含'vms-server'字符串的服務：
15-1、手動檢查該服務：
[root@dawning-01 libexec]# ./check_procs -w 1:1 -c 1:2 -a 'vms-server'
PROCS OK: 1 process with args 'vms-server'
15-2、在客戶端添加服務：
[root@dawning-01 libexec]# vim /usr/local/nagios/etc/nrpe.cfg
添加以下內容：
command[check_procs_vms-server]=/usr/local/nagios/libexec/check_procs -a 'vms-server' -w 1:1 -c 1:2
15-3、在服務器端添加檢查該服務的名稱：
[root@had04 ~]# vim /usr/local/nagios/etc/Linuxservers/192.168.100.117.cfg
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description check_procs_vms-server
check_command check_nrpe!check_procs_vms-server
}
15-4、重啓服務器端nagios服務：
[root@had04 ~]# service nagios restart
16、添加檢查端口是否打開的服務：
16-1、手動檢查該服務：
[root@dawning-01 libexec]# ./check_tcp -H 192.168.100.117 -p 1692
TCP OK - 0.000 second response time on port 1692|time=0.000314s;;;0.000000;10.000000
16-2、在客戶端添加服務：
[root@dawning-01 libexec]# vim /usr/local/nagios/etc/nrpe.cfg
添加以下內容：
command[check_tcp-1692]=/usr/local/nagios/libexec/check_tcp -p 1692
16-3、在服務器端添加檢查該服務的名稱：
define service{
use generic-service,svr-pnp4 ; Name of service template to use
host_name 192.168.100.117
service_description check_tcp-1692
check_command check_nrpe!check_tcp-1692
}
16-4、重啓服務器端nagios服務：
[root@had04 ~]# service nagios restart
linux技術交流羣：295294329 本文朋友郭工整理，感謝他的共享！！！