nginx-prometheus-exporterをインストールする

nginx公式のPrometheus用exporterをインストールする

nginxinc/nginx-prometheus-exporter

まずnginxのstub_statusモジュールを有効にする

Module ngx_http_stub_status_module

code:/etc/nginx/sites-enabled/default

server {

(略)

location /stub_status {

stub_status on;

}

(略)

}

nginx再起動

curlが成功すればOK

code:cmd.sh

sudo systemctl reload nginx.service

curl https://staging.gosyujin.com/stub_status

code:bash

Active connections: 1

server accepts handled requests

1473 1473 2403

Reading: 0 Writing: 1 Waiting: 0

nginx-prometheus-exporterをインストールしてサービス起動

code:cmd.sh

wget https://github.com/nginxinc/nginx-prometheus-exporter/releases/download/v0.4.2/nginx-prometheus-exporter-0.4.2-linux-amd64.tar.gz

tar zxvf nginx-prometheus-exporter-0.4.2-linux-amd64.tar.gz

sudo mv nginx-prometheus-exporter /usr/local/

code:cmd.sh

sudo vi /lib/systemd/system/nginx-prometheus-exporter.service

-nginx.scrape-uriに上記で設定したstub_statusのURLを記載する

code:/lib/systemd/system/nginx-prometheus-exporter.service

Unit

Description=nginx for Prometheus

Service

Restart=always

User=prometheus

ExecStart=/usr/local/nginx-prometheus-exporter -nginx.scrape-uri ホスト/stub_status

ExecReload=/bin/kill -HUP $MAINPID

TimeoutStopSec=20s

SendSIGKILL=no

Install

WantedBy=multi-user.target

code:cmd.sh

sudo systemctl enable nginx-prometheus-exporter.service

sudo systemctl start nginx-prometheus-exporter.service

sudo ufw allow 9113/tcp

Prometheusに監視対象を追加

code:cmd.sh

sudo vi /etc/prometheus/prometheus.yml

code:/etc/prometheus/prometheus.yml

(略)

- job_name: nginx

metrics_path: '/metrics'

scheme: http

static_configs:

- targets: [

'ホスト:ポート'

]

Prometheus再起動

code:cmd.sh

sudo systemctl reload prometheus