How to install nginx in linux (follow the steps to install correctly)

1. Install epel first

sudo yum install yum-utils

2. After the installation is complete, check the installed epel package

yum install epel-release

3. Start installing nginx

yum install nginx

4. Check the nginx version

nginx -v

5. Set the boot to start automatically

systemctl enable nginx

6. Start nginx

systemctl start nginx

7. To check if Nginx is running, use the following command:

sudo systemctl status nginx

Or the page can directly access the IP

8. Some other usages:

sudo systemctl start nginx   # 启动 Nginx
sudo systemctl stop nginx    # 停止 Nginx
sudo systemctl restart nginx # 重启 Nginx
sudo systemctl reload nginx  # 重新加载 Nginx 配置文件

To see where Nginx is installed, you can use the following command:

which nginx

This command will output the full path of the Nginx executable, for example: /usr/sbin/nginx

Nginx binaries are usually located in the /usr/sbin directory, while configuration files and other files are usually located in the /etc/nginx directory.

If you wish to view Nginx's configuration file directory, run the following command:

nginx -t

This command will check Nginx's configuration file syntax and output the full path to the configuration file. For example:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: configuration file /etc/nginx/nginx.conf test is successful

In the above example, the Nginx configuration file is located at /etc/nginx/nginx.conf .

9. If you want to map Nginx to port 8468 of the local machine and provide different pages on this port, you can add multiple location blocks in the Nginx configuration file .

Here is an example configuration with two location blocks that map requests to different pages:

server {
    listen 80;
    server_name your_domain.com;

    location / {
        proxy_pass http://127.0.0.1:8468;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

    location /page1 {
        proxy_pass http://127.0.0.1:8468/page1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

    location /page2 {
        proxy_pass http://127.0.0.1:8468/page2;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }
}

In the example above, the first location block forwards all requests to local port 8468. The second and third location blocks forward the request to the /page1 and /page2 pages on the local port 8468, corresponding to different pages of your application.

After saving the configuration file, reload the Nginx configuration for the changes to take effect:

sudo systemctl reload nginx

Now, you can access the local port 8468 by visiting http://your_domain.com , or visit http://your_domain.com/page1 and http://your_domain.com/page2 to visit different page.

10. How to uninstall nginx

Following are the steps to uninstall Nginx on CentOS cloud server:

1. Stop the Nginx service and execute the following command in the terminal:

sudo systemctl stop nginx

2. To delete the Nginx package, execute the following command in the terminal:

sudo yum remove nginx

3. Delete Nginx configuration files and log files Execute the following command in the terminal:

sudo rm -rf /etc/nginx

sudo rm -rf /var/log/nginx

4. finish

After the above steps are completed, Nginx on the server will be completely removed. If you need to reinstall Nginx, you can perform the installation steps again