URL : https://vikram-sahu.github.io/install-nginx-on-linux-centos8/

Introduction

Nginx is an open-source web server with high-performance HTTP and reverse proxy. Majority of largest sites on the internet trust Nginx for handling tons of load.

Usage

• Standalone web server
• Load balancer
• Content cache
• Reverse proxy for both HTTP and non-HTTP servers

As per benchmarks Nginx is capable of handling larger number of concurrent connection with smaller memory footprint per connection as compared to Apache.

Prerequisites

• Make sure you have sudo privileges
• Make sure Apache is not running or any other application using port 80 or 443.

Installation

1. Installing nginx on centos 8

   sudo yum install -y nginx

   OR

   simply type nginx on the terminal

   [root@localhost ~]# nginx
   bash: nginx: command not found...
   Install package 'nginx' to provide command 'nginx'? [N/y] y
   
   * Waiting in queue... 
   * Loading list of packages.... 
   The following packages have to be installed:
   nginx-1:1.14.1-9.module_el8.0.0+184+e34fea82.x86_64	A high performance web server and reverse proxy server
   nginx-all-modules-1:1.14.1-9.module_el8.0.0+184+e34fea82.noarch	A meta package that installs all available Nginx modules
   nginx-mod-http-image-filter-1:1.14.1-9.module_el8.0.0+184+e34fea82.x86_64	Nginx HTTP image filter module
   nginx-mod-http-perl-1:1.14.1-9.module_el8.0.0+184+e34fea82.x86_64	Nginx HTTP perl module
   nginx-mod-http-xslt-filter-1:1.14.1-9.module_el8.0.0+184+e34fea82.x86_64	Nginx XSLT module
   nginx-mod-mail-1:1.14.1-9.module_el8.0.0+184+e34fea82.x86_64	Nginx mail modules
   nginx-mod-stream-1:1.14.1-9.module_el8.0.0+184+e34fea82.x86_64	Nginx stream modules
   Proceed with changes? [N/y] y
   
   
   * Waiting in queue... 
   * Waiting for authentication... 
   * Waiting in queue... 
   * Downloading packages... 
   * Requesting data... 
   * Testing changes... 
   * Installing packages... 
   

   when you type y + enter

   It will automatically install all dependencies

2. Once you have installed nginx successfully, trigger the below command on terminal.

   sudo systemctl enable nginx
   sudo systemctl start nginx

3. Above command will enable and start the service you can check and verify the same using the below.

   sudo systemctl status nginx

   OR

   sudo service nginx status

4. Output on success and failure will be shown below

   ON Success

   ● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2019-10-31 21:09:32 IST; 5min ago

   ON Failure

   [root@localhost ~]# systemctl status nginx 
   ● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Thu 2019-10-31 21:11:58 IST; 9s ago

Firewall Restriction

centos 8 has its predefined firewalld service with rules for HTTP {80} or HTTPS {443}

sudo firewall-cmd --permanent --zone=public --add-service=http
sudo firewall-cmd --permanent --zone=public --add-service=https
sudo firewall-cmd --reload

if it already configure you will getting below alerts

[root@localhost ~]# sudo firewall-cmd --permanent --zone=public --add-service=http
Warning: ALREADY_ENABLED: http
success
[root@localhost ~]# sudo firewall-cmd --permanent --zone=public --add-service=https
Warning: ALREADY_ENABLED: https
success
[root@localhost ~]# sudo firewall-cmd --reload
success

http://localhost/

finally you can redirect to your http://Your-IP or http://localhost