How to stop nginx service under linux
When new functions are launched, the server needs to be stopped to prevent users from operating additional data during the update process.
(Recommended tutorial: nginx tutorial)
1. Check the nginx main process:
$ ps -ef | grep nginx
2. Stop the Nginx service
Stop the nginx service calmly
$ kill -QUIT 主进程号
For example:
kill -QUIT 16391
This method will relatively have a stopping process, first stop the child process, and then stop the main process.
Quickly stop Nginx:
$ kill -TERM 主进程号
This will be faster than the above method.
Force to stop Nginx:
$ kill -9 主进程号
This method is the last method, force stop.
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The server does not have permission to access the requested resource, resulting in a nginx 403 error. Solutions include: Check file permissions. Check the .htaccess configuration. Check nginx configuration. Configure SELinux permissions. Check the firewall rules. Troubleshoot other causes such as browser problems, server failures, or other possible errors.

How to confirm whether Nginx is started: 1. Use the command line: systemctl status nginx (Linux/Unix), netstat -ano | findstr 80 (Windows); 2. Check whether port 80 is open; 3. Check the Nginx startup message in the system log; 4. Use third-party tools, such as Nagios, Zabbix, and Icinga.

Steps to start Nginx in Linux: Check whether Nginx is installed. Use systemctl start nginx to start the Nginx service. Use systemctl enable nginx to enable automatic startup of Nginx at system startup. Use systemctl status nginx to verify that the startup is successful. Visit http://localhost in a web browser to view the default welcome page.

Answer to the question: 304 Not Modified error indicates that the browser has cached the latest resource version of the client request. Solution: 1. Clear the browser cache; 2. Disable the browser cache; 3. Configure Nginx to allow client cache; 4. Check file permissions; 5. Check file hash; 6. Disable CDN or reverse proxy cache; 7. Restart Nginx.

How to configure Nginx in Windows? Install Nginx and create a virtual host configuration. Modify the main configuration file and include the virtual host configuration. Start or reload Nginx. Test the configuration and view the website. Selectively enable SSL and configure SSL certificates. Selectively set the firewall to allow port 80 and 443 traffic.

In Linux, use the following command to check whether Nginx is started: systemctl status nginx judges based on the command output: If "Active: active (running)" is displayed, Nginx is started. If "Active: inactive (dead)" is displayed, Nginx is stopped.

The methods to view the running status of Nginx are: use the ps command to view the process status; view the Nginx configuration file /etc/nginx/nginx.conf; use the Nginx status module to enable the status endpoint; use monitoring tools such as Prometheus, Zabbix, or Nagios.

The error log is located in /var/log/nginx (Linux) or /usr/local/var/log/nginx (macOS). Use the command line to clean up the steps: 1. Back up the original log; 2. Create an empty file as a new log; 3. Restart the Nginx service. Automatic cleaning can also be used with third-party tools such as logrotate or configured.
