nginx prometheus exporter

六月 03, 2021

nginx

新项目上线需要完善监控，除了系统部分使用node exporter，中间件使用了以下exporter
kafka exporter
redis exporter
mysql exporter
nginx prometheus exporter
mesos exporter

Nginx监控第一次做，网上查到的数据源使用prometheus监控Nginx的又比较少，多少还有点小坑，在此记录下~

拿包

1	`$ wget https://github.com/nginxinc/nginx-prometheus-exporter/releases/download/v0.9.0/nginx-prometheus-exporter_0.9.0_linux_amd64.tar.gz`

配置Nginx stub_status （nginx提供了stub_status模块，我们可以基于此进行监控）

$ cat /data/apps/config/nginx/conf.d/nginx_status.conf
server {
    listen 8080;
    access_log off;
    server_name localhost;

    location /nginx_status {
        stub_status on;
        access_log off;
        allow 192.X.X.6;
        deny all;
      }
}

启动

nginx_exporter$ ls
CHANGELOG.md  LICENSE  nginx_exporter_start.sh  nginx-prometheus-exporter  README.md

nginx_exporter$ cat nginx_exporter_start.sh
nohup ./nginx-prometheus-exporter -nginx.scrape-uri http://192.X.X.6:8080/nginx_status > /dev/null 2>&1 &
nginx_exporter$ ps -ef |grep exporter
ease    591     1  0 Apr28 ?        00:13:22 /usr/sbin/node_exporter --web.listen-address=0.0.0.0:9100 --collector.textfile.directory=/data/apps/data/promethous/
ease  13656     1  0 May10 ?        00:00:28 /data/apps/opt/consul_exporter/consul_exporter
ease  28649     1  0 15:35 pts/2    00:00:00 ./nginx-prometheus-exporter -nginx.scrape-uri http://192.X.X.6:8080/nginx_status

nginx_exporter$ curl 192.X.X.6:9113
<!DOCTYPE html>
                        <title>NGINX Exporter</title>
                        <h1>NGINX Exporter</h1>
                        <p><a href="/metrics">Metrics</a></p>
```                        
metrics，获取到指标不是很多

$ curl http://192.X.X.6:9113/metrics

![](/img/nginx1.png)


从grafana找适合的模板导入dashboard
![](/img/nginx2.png)
![](/img/nginx3.png)


小坑：查到说 nginx-prometheus-exporter 只支持8080，一开始8080确实被监听了，但是是被业务console所占用。有机会再测试下换成8081会怎么样😋

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