Getting Started

Basic configuration

Useful NGINX Commands

sudo nginx -v            #version

sudo nginx -V            #version & enabled modules

sudo nginx -t            #config test

sudo nginx -T            #full configuration dump

sudo nginx -s reload     #reload signal

NGINX keeps it’s conf in /etc/nginx directory

Here’s the default example of /etc/nginx/nginx.conf

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log notice;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;
}

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    keepalive_timeout   65;
    types_hash_max_size 4096;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;
}

Here’s the default example of /etc/nginx/conf.d/default.conf

server {
    listen            80;
    listen       [::]:80;
    server_name        _;

    location / {
        root /usr/share/nginx/html;
        index index.html index.htm;
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }

    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;
}

Multi-Server setup

Create the directory structure
```
sudo mkdir -p /opt/services/app{1..3}
```

If needed open the local firewall

sudo firewall-cmd --add-port={9001..9003}/tcp --permanent
sudo firewall-cmd reload
sudo firewall-cmd --list-all

Create the following three index’s in their corresponding directory.

RED - APP 1

<!doctype html>
<html lang="en-US">

<head>
<link rel="icon" type="image/png"
    href="https://www.nginx.com/wp-content/uploads/2019/10/favicon-48-48.ico"
    sizes="48x48">

<h1>This is my APP 1</h1>
<style>
    body { background-color: #FF0000; }
</style>
<title>RED - APP 1</title>
</head>

</html>

GREEN - APP 2

<!doctype html>
<html lang="en-US">

<head>
<link rel="icon" type="image/png"
    href="https://www.nginx.com/wp-content/uploads/2019/10/favicon-48-48.ico"
    sizes="48x48">

<h1>This is my APP 2</h1>
<style>
    body { background-color: #00FF00; }
</style>
<title>GREEN - APP 2</title>
</head>

</html>

BLUE - APP 3

<!doctype html>
<html lang="en-US">

<head>
<link rel="icon" type="image/png"
    href="https://www.nginx.com/wp-content/uploads/2019/10/favicon-48-48.ico"
    sizes="48x48">

<h1>This is my APP 3</h1>
<style>
    body { background-color: #0000FF; }
</style>
<title>BLUE - APP 3</title>
</head>

</html>

Create /etc/nginx/conf.d/web.conf

web.conf

server {

    listen        9001;
    index   index.html;

    location / {
    root /opt/services/app1;
    }
}

 server {

    listen        9002;
    index   index.html;

    location / {
    root /opt/services/app2;
    }
}

 server {

    listen        9003;
    index   index.html;

    location / {
    root /opt/services/app3;
    }
}

Test the config
```
sudo nginx -t
```
Load the config
```
sudo nginx -s reload
```