Nagios 分布式

Nagios 分布式

一，分角色

监控中心服务器，分布式服务器，被监控服务器

监控中心服务器：通过NSCA获取分布式监控服务器的相关状态，呈现相关服务器状态和发出报警等;

分布式服务器：通过对被监控服务器状态采集并且把被监控服务器的状态通过NSCA_send发送给监控中心服务器。

被监控服务器：被监控服务器就是生产环境服务器。

二，详细部署

1，被监控服务器

tar -zxvf nagios-plugins-1.4.15.tar.gz

cd nagios-plugins-1.4.15

./configure

make

make install

chown nagios.nagios /usr/local/nagios

cd ..

tar -zxvf nrpe-2.12.tar.gz

pwd

cd nrpe-2.12

./configure

make all

make install-plugin

make install-daemon

make install-daemon-config

vi /usr/local/nagios/etc/nrpe.cfg

将allowed_hosts=127.0.0.1

修改成你的nagios分布式服务器的ip

/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d #启动nrpe

netstat -anl|grep 5666#测试监听端口

2，安装分布式服务器

useradd nagios

passwd nagios

groupadd nagcmd

usermod -G nagcmd nagios

usermod -G nagcmd apache #创建Nagios用户创建组把用户加入组并加入apche

tar -zxvf nagios-3.2.3.tar.gz

cd nagios-3.2.3

./configure --with-command-group=nagcmd

make all

make install

make install-init

make install-config

make install-commandmode

tar -zxvf nagios-plugins-1.4.15.tar.gz

cd nagios-plugins-1.4.15

./configure --with-nagios-user=nagios --with-nagios-group=nagcmd

make

make install

chkconfig --add nagios

chkconfig nagios on

tar -zxvf nrpe-2.12.tar.gz

cd nrpe-2.12

./configure

make all

make install-plugin

/usr/local/nagios/libexec/check_nrpe -H 192.168.20.100 #测试被监控服务器是否连通，正常情况下会返回被监控端的NRPE版本

vi /usr/local/nagios/etc/objects/commands.cfg

#check nrpe

define command{

command_name check_nrpe

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$

} #添加nrpe外部检测命令

tar -zxvf nsca-2.7.2.tar.gz

cd nsca-2.7.2

./configure

make all

cp sample-config/send_nsca.cfg /usr/local/nagios/etc/

cd /usr/local/nagios/etc/

chown nagios.nagios send_nsca.cfg

cp src/send_nsca /usr/local/nagios/bin/

cd /usr/local/nagios/bin/

chown nagios.nagios send_nsca

vi /usr/local/nagios/libexec/submit_check_result #创建脚本

#!/bin/sh

# Arguments:

# $1 = host_name (Short name of host that the service is

# associated with)

# $2 = svc_description (Description of the service)

# $3 = state_string (A string representing the status of

# the given service - "OK", "WARNING", "CRITICAL"

# or "UNKNOWN")

# $4 = plugin_output (A text string that should be used

# as the plugin output for the service checks)

# Convert the state string to the corresponding return code

return_code=-1

case "$3" in

OK)

return_code=0

;;

WARNING)

return_code=1

;;

CRITICAL)

return_code=2

;;

UNKNOWN)

return_code=-1

;;

esac

# pipe the service check info into the send_nsca program, which

# in turn transmits the data to the nsca daemon on the central

# monitoring server

/bin/printf "%s\t%s\t%s\t%s\n" "$1" "$2" "$return_code" "$4" | /usr/local/nagios/bin/send_nsca 192.168.20.195 -c /usr/local/nagios/etc/send_nsca.cfg #此处的IP地址为监控中心服务器。

chmod +x /usr/local/nagios/libexec/submit_check_result

chown nagios.nagios /usr/local/nagios/libexec/submit_check_result

vi /usr/local/nagios/etc/objects/commands.cfg #增加如下检测命令

define command{

command_name submit_check_result

command_line /usr/local/nagios/libexec/submit_check_result $HOSTNAME$ '$SERVICEDESC$' $SERVICESTATE$ '$SERVICEOUTPUT$'

}

vi /usr/local/nagios/etc/nagios.cfg

enable_notifications=0 #禁用告警

obsess_over_services=1#开启被动监控

ocsp_command=submit_check_result#定义每次执行完检查后执行的命令

obsess_over_hosts=1#开启主机被动监控

ochp_command=submit_check_result#指定每次执行完主机检查后执行的命令

vi /usr/local/nagios/etc/send_nsca.cfg

password=urgamer#设置密码，此处设置的密码要和监控中心服务器一致

配置被监控的服务器，此处配置在分布式监控服务器上配置

cd /usr/local/nagios/etc/objects/

vi hosts.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 urg-test01

alias linux-test01

address 192.168.20..100

}

vi services.cfg

define service{

use local-service ; Name of service template to use

host_name urg-test01

service_description PING

check_command check_ping!100.0,20%!500.0,60%

}

define service{

use local-service ; Name of service template to use

host_name urg-test01

service_description Root Partition

check_command check_nrpe!check_local_disk!20%!10%!/

}

define service{

use local-service ; Name of service template to use

host_name urg-test01

service_description Current Users

check_command check_nrpe!check_local_users!20!50

}

define service{

use local-service ; Name of service template to use

host_name urg-test01

service_description Total Processes

check_command check_nrpe!check_local_procs!250!400!RSZDT

}

vi nagios.cfg #添加以下两行配置

cfg_file=/usr/local/nagios/etc/objects/hosts.cfg

cfg_file=/usr/local/nagios/etc/objects/services.cfg

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg #检查配置文件

service nagios start #启动nagios

3，安装监控中心服务器

首先确认监控中心服务器已经安装了apache且禁用了SElinux

useradd nagios

passwd nagios

groupadd nagcmd

usermod -G nagcmd nagios

usermod -G nagcmd apache #创建Nagios用户创建组把用户加入组并加入apche

tar -zxvf nagios-3.2.3.tar.gz

cd nagios-3.2.3

./configure --with-command-group=nagcmd

make all

make install

make install-init

make install-config

make install-commandmode

make install-webconf

htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

tar xzf nagios-plugins-1.4.11.tar.gz

cd nagios-plugins-1.4.11

./configure --with-nagios-user=nagios --with-nagios-group=nagcmd

make

make install

chkconfig --add nagios

chkconfig nagios on

tar -zxvf nsca-2.7.2.tar.gz

cd nsca-2.7.2

./configure

make all

cp /usr/local/src/nsca-2.7.2/src/nsca /usr/local/nagios/bin/

chown nagios:nagios /usr/local/nagios/bin/nsca

cp /usr/local/src/nsca-2.7.2/sample-config/nsca.cfg /usr/local/nagios/etc

chown nagios:nagios /usr/local/nagios/etc/nsca.cf

vi /usr/local/nagios/etc/nsca.cfg

password=urgamer #此处和分布式监控服务器密码一致

vi /usr/local/nagios/etc/nagios.cfg

check_external_commands=1# 配置nagios检查扩展命令

accept_passive_service_checks=1# 配置接受被动服务检测的结果

accept_passive_host_checks=1#配置接受被动主机检测的结果

cd /usr/local/nagios/etc/

mkdir monitor

cd monitor

vi monitor.cfg

define host{

use linux-server

host_name urg-test01

address 192,168,20.100

passive_checks_enabled 1

active_checks_enabled 0

}

define service{

use local-service

host_name urg-test01

service_description Root Partiton

check_command check_local_disk!30%!10!/

check_freshness 1

freshness_threshold 450

passive_checks_enabled 1

active_checks_enables 0

}

/usr/local/nagios/bin/nsca -d -c /usr/local/nagios/nsca.cfg

service nagios restart

此时重新打开浏览器就换显示，新加的服务器。

转载于:https://blog.51cto.com/mllakb/1298081

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