When Nginx is turned on, the port is occupied and prompts: Address already in use

As shown in the figure:

Check port usage:

sudo netstat -apn | grep 80

View the process occupying the port:

ps -ef | grep 3345

From the results, we can see that port 80 is occupied by Nginx itself. You can kill the process and restart Nginx.

sudo kill -9 3345

sudo netstat -apn | grep 80

After successfully killing the process, start Nginx

Start Nginx successfully. Enter the IP address of the system where Nginx is located in the browser to verify whether Nginx is started successfully.

The following describes how to start, stop, and restart Nginx.

start up

Startup code format: nginx installation directory address -c nginx configuration file address

For example:

[root@LinuxServer sbin]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

stop

There are three ways to stop nginx:

Stop calmly

1. Check the process number

[root@LinuxServer ~]# ps -ef|grep nginx 

2. Kill the process

[root@LinuxServer ~]# kill -QUIT 2072 

Quick Stop

1. Check the process number

[root@LinuxServer ~]# ps -ef|grep nginx 

2. Kill the process

[root@LinuxServer ~]# kill -TERM 2132
or [root@LinuxServer ~]# kill -INT 2132

Force Stop

[root@LinuxServer ~]# pkill -9 nginx

Restart

1. Verify whether the nginx configuration file is correct

Method 1: Enter the nginx installation directory sbin and enter the command ./nginx -t

The following shows that nginx.conf syntax is ok

nginx.conf test is successful

This indicates that the configuration file is correct!

Method 2: Add -t before the startup command -c

2. Restart Nginx service Method 1: Enter the nginx executable directory sbin and enter the command ./nginx -s reload

Method 2: Find the current nginx process number, and then enter the command: kill -HUP process number to restart the nginx service

Summarize

The above is what I introduced to you about the prompt that the port is occupied when starting Nginx: Address already in use. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!