四层负载配置示例

worker_processes 1;
events {
        worker_connections 1024;
}
stream {
        upstream backend {
                hash $remote_addr consistent;
                server ip1:port max_fails=3 fail_timeout=30s;
                server ip2:port max_fails=3 fail_timeout=30s;
                server ip3:port max_fails=3 fail_timeout=30s;
        }
        server {
                listen 80;
                proxy_connect_timeout 1s;
                proxy_pass backend;
        }
}
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