Using Nginx's stream module to implement MySQL reverse proxy and RabbitMQ load balancing

Why use the stream module?

• TCP level proxy: MySQL and RabbitMQ are both TCP-based protocols, not HTTP. streamModule allows Nginx to proxy at the TCP level, allowing it to handle non-HTTP traffic.
• Protocol Transparency: Using streammodules, Nginx does not parse the MySQL or AMQP protocols, which means it can pass data seamlessly, maintaining protocol integrity.
• Performance and High Availability: By distributing connections across multiple backend servers, streamthe module enables load balancing, improving performance and high availability.
• Flexibility: Using streammodules, you can proxy almost any TCP or UDP-based service, making Nginx a powerful network proxy tool.

How to introduce stream module in nginx?

Add the module during ./configure--with-stream

./configure --prefix=/usr/local/nginx --with-stream

Implement MySQL reverse proxy in nginx configuration file

The following is the reverse proxy implementation, 3306 to 10002

stream {

    server {
        listen 10002;
        proxy_connect_timeout 5s;
        proxy_timeout 300s;
        proxy_pass 127.0.0.1:3306;
    }
}
http { # ...其他HTTP配置... }

Implementing RabbitMQ load balancing in nginx configuration file

stream {
	upstream rabbitmq_nodes {
	server 127.0.0.1:5672 max_fails=3 fail_timeout=30s;   # 第一个节点
	server 127.0.0.1:5673 max_fails=3 fail_timeout=30s;   # 第二个节点
	server 127.0.0.1:5674 max_fails=3 fail_timeout=30s;   # 第三个节点

# 健康检查
	}

	server {
		listen 5675;
		proxy_pass rabbitmq_nodes;
	}
}