How to Change the Default Port Number of Nginx on CentOS 7.6

Changing the default port number of Nginx on CentOS 7.6

Check the version of default port number of nginx using the following command.

[root@linuxhelp ~]# netstat -tulpn | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      32430/nginx: master 

Modify the configuration file of Nginx server to change the default port number

[root@linuxhelp ~]# vim /etc/nginx/nginx.conf 
user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


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

    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;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;

    server {
	listen       8989 default_server;
	listen       [::]:8989 default_server;
	server_name   _;
	root         /usr/share/nginx/html;
}
}

Test the configuration file of Nginx server.

[root@linuxhelp ~]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Restart the service of Nginx server.

[root@linuxhelp ~]# systemctl restart nginx.service 

Search for the listening socket 8989 using netstat.

[root@linuxhelp ~]# netstat -tulpn | grep 8989
tcp        0      0 0.0.0.0:8989            0.0.0.0:*               LISTEN      2260/nginx: master  
tcp6       0      0 :::8989                 :::*                    LISTEN      2260/nginx: master  

The default port number of Nginx (80) has changed to 8989 successfully and this tutorial comes to an end with this.