Nagios NSCA 被动监控服务器搭建

Posted 2020-08-22

nagios的快速部署，执行环境初始化配置脚本。主要配置epel的yum源等

yum install httpd nagios nagios-common nagios-devel nagios-plugins-all -y

rm -rf /etc/nagios/passwd

htpasswd -c /etc/nagios/passwd nagiosadmin

chmod 640 /etc/nagios/passwd

chown :apache /etc/nagios/passwd

service nagios checkconfig

service nagios start

chkconfig nagios on

被动监控服务端的配置：

yum install nsca*

vi /etc/nagios/nsca.cfg #配置密码、IP地址等信息

pid_file=/var/run/nsca.pid

server_port=5667

server_address=192.168.10.34

nsca_user=nagios

nsca_group=nagios

debug=1

command_file=/var/spool/nagios/cmd/nagios.cmd

alternate_dump_file=/var/spool/nagios/cmd/nsca.dump

aggregate_writes=1

append_to_file=0

max_packet_age=60

password=123456

decryption_method=1

vi contacts.cfg  #修改email报警邮件地址

vi templates.cfg  #增加被动监控的模板

define service{ 

        name                    passive_service

        use                     generic-service

        max_check_attempts      3

        active_checks_enabled   0

        passive_checks_enabled  1

        normal_check_interval   2

        retry_check_interval    1

        notifications_enabled   1

        notification_interval   2

        notification_period     24x7

        contact_groups          admins

        register                0

}

vi command.cfg #增加被动监控的命令

define command{

        command_name    check_dummy

        command_line    /usr/lib64/nagios/plugins/check_dummy $ARG1$

}

vi localhost.cfg #增加远程客户端被动监控项目

define host{

        use                      linux-server

        host_name               cacti-server

        alias                    cacti-server

        address                 192.168.10.33

        }

define service{

        use                             passive_service

        host_name                       cacti-server

        service_description             LoadAVG

        check_command                   check_dummy!3

        check_freshness                 1

        freshness_threshold             120

        notifications_enabled           0

}

service nagios start

service nsca start

被动监控客户端的配置：

yum install nagios-plugins-all nsca-client -y

vi send_nsca.cfg

password=123456

vi nsca.sh 

#!/bin/sh 

set -e 

host_name=$1 

svc_name=$2 

nsca_add=$3

if [ "$3" ];then

case "$2" in 

check_load) 

check_ARG="-w 3 -c 5" 

;; 

check_users)

check_ARG="-w 2 -c 5"

;;

*)

exit 0

;;

esac 

/usr/lib64/nagios/plugins/$2 $check_ARG > /tmp/$2 &

sleep 3

out=`cat /tmp/$2`

output=`echo $out|awk ‘{print $1}‘`

if [ $output == "OK" ];then

status=0

elif [ $output == "WARNING" ];then

status=1

elif [ $output == "CRITICAL" ];then

status=2

else

status=3

fi

echo "$host_name LoadAVG $status $out"|/usr/sbin/send_nsca -H $nsca_add -d " " -c /etc/nagios/send_nsca.cfg

else

echo "please use bash nsca.sh hostname servicename nscaddr. recheck!"

fi

sh nsca.sh cacti-server check_load 192.168.10.34   

vi /etc/crontab

* * * * * root sh /etc/nagios/nsca.sh cacti-server check_load 192.168.10.34

参考来源