[Nagios core] NCPA 플러그인 설치

 

NCPA 설치

 

 

rpm -Uvh https://repo.nagios.com/nagios/8/nagios-repo-8-1.el8.noarch.rpm

 

yum update

yum install epel-release -y

yum config-manager --enable powertools

yum install ncpa -y

 

cd /tmp

wget https://assets.nagios.com/downloads/ncpa/check_ncpa.tar.gz

tar xvf check_ncpa.tar.gz

chown nagios:nagios check_ncpa.py

chmod 775 check_ncpa.py

 

mv check_ncpa.py /usr/local/nagios/libexec

 

파이썬 설치

 

yum install gcc openssl-devel bzip2-devel libffi-devel wget

 

wget https://www.python.org/ftp/python/3.9.4/Python-3.9.4.tgz

tar xzf Python-3.9.4.tgz

 

cd Python-3.9.4

./configure --enable-optimizations

 

make altinstall

 

ls -la /usr/local/bin

Python3.9 확인

 

 

vi /etc/shells

/usr/local/bin/python3.9 //추가

 

vi /root/.bashrc

alias python="/usr/local/bin/python3.9" //추가

 

 

 

source /root/.bashrc

 

python3.6 -V

Python 3.9.8 //버전 확인

 

 

cd /usr/local/nagios/libexec/

vi check_ncpa.py

 

첫 번째 라인 #!/usr/local/bin/python3.9로 변경

 

 

저장 후 ./check_ncpa.py 작동확인

 

Nagios 적용

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

$USER10$=1234 // 임의 토큰 인수 추가

 

cd /usr/local/nagios/libexec

./check_ncpa.py -H 172.30.85.204 -t 1234 -M cpu/percent -q aggregate=avg -w 90 -c 95 // 작동 확인

 

 

※ -H 호스트명,주소 -t 토큰 -M 매트릭 -w 경고 -c 위험

 

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

command[check_ncpa_cpu]=/usr/local/nagios/libexec/check_ncpa.py -H $HOSTADDRESS$ -t $USER10$ -M cpu/percent -w 20 -c 40 -u G

 

 

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

define command {

command_name check_ncpa_cpu

command_line $USER1$/check_ncpa.py -H $HOSTADDRESS$ -t $USER10$ -P 5693 -M cpu/percent -w 20 -c 40 -q aggregate=avg

}

 

서버적용

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

define service{

use local-service

host_name localhost

service_description CPU Usage

check_command check_ncpa_cpu

}

 

호스트적용

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

define service{

use local-service

host_name test

service_description CPU Usage

check_command check_ncpa_cpu

}

 

systemctl restart ncpa_listener

systemctl restart nagios