Installing Dependencies

yum install openssl -y
yum install zlib -y
yum install pcre -y

Add the official Nginx repository:

rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

Installing Nginx

yum install nginx -y

Managing Nginx Service

systemctl start nginx    # Start Nginx
systemctl restart nginx  # Restart Nginx
systemctl status nginx  # Check status
systemctl enable nginx  # Enable on boot

Verifying Installation

Open port 80 in the server security group, then access http://{server_ip} in a browser. The default welcome page indicates successful installation and startup.

Configuration file locations:

• Main config: /etc/nginx/nginx.conf
• Additional configs: /etc/nginx/conf.d/ (all *.conf files are automatically included)
• Default config: /etc/nginx/conf.d/default.conf

Basic Cnofiguration Examples

Reverse Proxy

server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

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

Load Balancing

upstream backend_pool {
    ip_hash;
    server 127.0.0.1:8080 weight=3;
    server 127.0.0.1:8081 weight=2;
    server 127.0.0.1:8082 weight=1;
}

server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://backend_pool;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

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

After modifying configuration files, test the configuration:

nginx -t

Then reload Nginx to apply changes:

systemctl reload nginx