View source for Nginx: Monitoring Statistics

Script untuk monitoring statistics Nginx relatif mudah di instalasi dan di konfigurasi. Kita perlu melakukan langkah berikut untuk memperoleh gambar statistik dari server nginx.

Ubah konfigurasi file ngix dan tambahkan kalimat berikut

 vi /etc/nginx/sites-enabled/default 

 http {
   …
     server {
       listen SOME.IP.ADD.RESS;
       …
       location /nginx_status {
         stub_status on;
         access_log   off;
         allow SOME.IP.ADD.RESS;
         deny all;
         }
     …
     }
   …
 }

Test file konfigurasi

 /etc/init.d/nginx stop
 /usr/sbin/nginx -t

 the configuration file /etc/nginx/nginx.conf syntax is ok
 configuration file /etc/nginx/nginx.conf test is successful


Jika ada error tentang stub_status, check nginx. Nginx harusnya di konfigurasi dengan —-with-http_stub_status_module. Jika semua OK menggunakan shell lakukan test
 
 # GET http://hostname.anda/nginx_status

 Active connections: 1 
 server accepts handled requests
  1 1 1 
 Reading: 0 Writing: 1 Waiting: 0 

Download  perl script: rrd_nginx.pl dan jadikan executable

 cd /usr/local/src/
 wget http://kovyrin.net/files/mrtg/rrd_nginx.pl.txt
 mv rrd_nginx.pl.txt rrd_nginx.pl
 chmod +x rrd_nginx.pl

Install rrd tools

 apt-get install rrdcollect rrdtool rrdtool-tcl librrds-perl libgd-gd2-perl wget

 mkdir /var/lib/nginx/rrd
 mkdir /var/lib/nginx/rrd/html

Ubah setting di rrd_nginx.pl agar script tahu dimana menyimpan rrd-base dan image

 vi /usr/local/src/rrd_nginx.pl

 #!/usr/bin/perl
 use RRDs;
 use LWP::UserAgent;
 
 # define location of rrdtool databases
 my $rrd = ‘/var/lib/nginx/rrd’;
 # define location of images
 my $img = ‘/var/lib/nginx/rrd/html’;
 # define your nginx stats URL
 my $URL = “http://hostname.anda/nginx_status”;

Selanjutnya setup cron

 crontab -e

 0 * * * * /usr/local/src/rrd_nginx.pl

Jika semua persiapan telah dilakukan dengan baik maka kita akan melihat image di folder

 /var/lib/nginx/rrd/html

==Referensi==

* http://linxfo.wordpress.com/2008/03/08/monitoring-nginx-server-statistics-with-rrdtool/
* http://kovyrin.net/files/mrtg/rrd_nginx.pl.txt

==Pranala Menarik==

* [[Nginx]]
* [[Linux Howto]]

[[Category: Linux]]