Nginx can distribute requests to different servers based on the customized identifier in the request header. Specifically, you can use the map directive to map the custom identifier in the request header to a different backend server address, and then use the proxy_pass directive to forward the request to the corresponding backend server.
The following is a sample configuration file:
http { map $http_my_header $backend { default backend1.example.com; value1 backend2.example.com; value2 backend3.example.com; } upstream backend1 { server 192.168.1.1:8080; server 192.168.1.2:8080; } upstream backend2 { server 192.168.2.1:8080; server 192.168.2.2:8080; } upstream backend3 { server 192.168.3.1:8080; server 192.168.3.2:8080; } server { listen 80; server_name example.com; location / { proxy_pass http://$backend; } } }
In this configuration file, we define a map directive to map the $http_my_header variable in the request header to different backend server addresses. If the value of $http_my_header is value1, the request will be forwarded to backend2.example.com; if the value of $http_my_header is value2, the request will be forwarded to backend3.example.com; otherwise, the request will be forwarded to backend1.example.com.
Next, we define three upstream blocks, representing the backend server groups backend1, backend2, and backend3. Each group contains multiple backend servers. In the server block, we use the proxy_pass directive to forward the request to the corresponding backend server.
After this configuration, if the value of $http_my_header in the request header is value1, the request will be forwarded to the backend2 backend server group; if the value of $http_my_header is value2, the request will be forwarded to the backend3 backend server. group; otherwise, the request will be forwarded to the backend1 backend server group.
Configure socket and add several configurations:
server { listen 80; server_name example.com; location /websocket { proxy_pass http://$backend; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "Upgrade"; } }
The above is the detailed content of How Nginx distributes through the identity in the header. For more information, please follow other related articles on the PHP Chinese website!

NGINXUnit supports multiple programming languages and is implemented through modular design. 1. Loading language module: Load the corresponding module according to the configuration file. 2. Application startup: Execute application code when the calling language runs. 3. Request processing: forward the request to the application instance. 4. Response return: Return the processed response to the client.

NGINX and Apache have their own advantages and disadvantages and are suitable for different scenarios. 1.NGINX is suitable for high concurrency and low resource consumption scenarios. 2. Apache is suitable for scenarios where complex configurations and rich modules are required. By comparing their core features, performance differences, and best practices, you can help you choose the server software that best suits your needs.

Question: How to start Nginx? Answer: Install Nginx Startup Nginx Verification Nginx Is Nginx Started Explore other startup options Automatically start Nginx

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.

To shut down the Nginx service, follow these steps: Determine the installation type: Red Hat/CentOS (systemctl status nginx) or Debian/Ubuntu (service nginx status) Stop the service: Red Hat/CentOS (systemctl stop nginx) or Debian/Ubuntu (service nginx stop) Disable automatic startup (optional): Red Hat/CentOS (systemctl disabled nginx) or Debian/Ubuntu (syst

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.

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.

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.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

SublimeText3 Linux new version
SublimeText3 Linux latest version

Atom editor mac version download
The most popular open source editor

SublimeText3 Chinese version
Chinese version, very easy to use