Nginx

Single Machine
The Prometheus Nginx exporter can be used on a standalone machine to collect metrics from an nginx server.
Prerequisite(s)
OpsVerse Single Machine agent
The OpsVerse single machine agent should be running on this machine. If that's not the case, it can be installed using these steps.
stub_status module
The Nginx server should have the stub_status module enabled for the metrics collection to work. Availability of this module can be checked by running this command:
Shell
nginx -V 2>&1 | grep -o with-http_stub_status_module
nginx -V 2>&1 | grep -o with-http_stub_status_module
﻿
If this module is not already enabled, it can be enabled by following the steps outlined in this document.
Add a location for stub_status
Update the nginx.conf file and add a location for the stub_status module. This enables the nginx server to return metrics on the configured location URI. Here is an example:
Lua
server {
    listen localhost;
    server_name status.localhost;
    keepalive_timeout 0;

    access_log off;

    allow 127.0.0.1;
    deny all;

    location /stub_status {
        stub_status on;
    }
}
server {
    listen localhost;
    server_name status.localhost;
    keepalive_timeout 0;

    access_log off;

    allow 127.0.0.1;
    deny all;

    location /stub_status {
        stub_status on;
    }
}
﻿
For more details, please see - Nginx metrics through stub_status.
Install Nginx Prometheus Metric Exporter
The nginx prometheus exporter can be installed using this command:
Shell
# for amd64
curl https://raw.githubusercontent.com/OpsVerseIO/installers/main/prometheus-exporters/install-exporter-amd64.sh | sudo bash -s -- -e nginx

# for arm64
curl https://raw.githubusercontent.com/OpsVerseIO/installers/main/prometheus-exporters/install-exporter-arm64.sh | sudo bash -s -- -e nginx
# for amd64
curl https://raw.githubusercontent.com/OpsVerseIO/installers/main/prometheus-exporters/install-exporter-amd64.sh | sudo bash -s -- -e nginx

# for arm64
curl https://raw.githubusercontent.com/OpsVerseIO/installers/main/prometheus-exporters/install-exporter-arm64.sh | sudo bash -s -- -e nginx
﻿
The agent will begin scraping the metrics automatically. The script will drop the scrape target into /etc/opsverse/targets/, so the agent will begin automatically scraping.
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