Zabbix nginx monitoring

Zabbix 4 Nginx monitoring by Alireza Zabihi based on Alex Gluck solution on Linux.

Tested on zabbix 4.4

Connection Statistics:

• Active per second
• Reading
• Waiting per second
• Writing
• Requests pro connection

Request Statistics:

• Accepted per second
• Handled per second
• Total

Linux and Nginx performance monitoring:

• File descriptors (Maximum and Current)
• CPU Cores
• Worker_Connections
• Worker_Processes
• Maximum supported connection depended on configuration
• Nginx service status

Graph and screen:

• Requests Statistics graph
• File descriptors graph
• Read/Write Connections graph
• System Statistics graph

Triggers:

• Nginx service status
• Worker processes bad configuration

Installation for RHEL8 (CENTOS8)

Installation is similar for other linux distribution

Part 1 (Nginx side)

1, Check for with-http_stub_status_module enabled or not

nginx -V 2>&1 | grep -o with-http_stub_status_module 

Required output:

with-http_stub_status_module

NOTE:

RHEL8 is OK, if there is not any output you need to configure nginx with --with-http_stub_status_module:

./cofigure --with-http_stub_status_module
make && make install

2, Edit Nginx configuration and add nginx_status location to your website server context

check "include" in /etc/nginx/nginx.conf in server http section

server {
    listen  80;
    ....
    include /etc/nginx/default.d/*.conf;
    ....

add localhost nginx_status for nginx monitoring

vi /etc/nginx/default.d/stats.conf
  # add nginx_status location for nginx monitoring 
  location /nginx_status {
   	stub_status on;     
    access_log   off;     
    allow 127.0.0.1;
    deny all; }

Restart nginx service

systemctl restart nginx

Part 2 (Zabbix agent side)

You need to install the zabbix-agent or zabbix-agent2

1, download script file "nginx.sh" and put it in nginx server in /etc/zabbix/

chmod 775 nginx.sh 
cp nginx.sh /etc/zabbix/

2, Installing bc (Bash Calculator) if doesnt exist

yum install bc -y

3, Settings zabbix agent

create file and add line

vi /etc/zabbix/zabbix_agent2.d/nginx.conf for zabbix_agent2

or

vi /etc/zabbix/zabbix_agentd.d/nginx.conf for zabbix_agent

UserParameter=nginx[*],/etc/zabbix/nginx.sh $1

4, Restart zabbix-agent service

systemctl restart zabbix-agent2
or
systemctl restart zabbix-agent

Part 3 (Zabbix server side)

1, Download nginx_template.xml template and import it to your zabbix server from ---> Configuration -> Templates -> Import

2, Link imported template to your Nginx host