基础的 Nginx upstream 配置只是简单的轮询转发,当后端某个节点宕机,Nginx 仍会将流量发往故障节点导致请求失败。生产环境还需要主动健康检查、金丝雀发布(逐步切流)和基于 Cookie 的会话保持。本文覆盖 Nginx upstream 的进阶配置,实现真正的高可用流量管理。
一、被动健康检查(开源版 Nginx) <code"># 开源 Nginx 内置被动健康检查(检测失败后临时剔除节点) upstream app_backend { # 负载均衡算法 least_conn; # 最少连接数(比轮询更均衡) server 10.0.0.1:8000 weight=3; # 权重3(分配更多流量) server 10.0.0.2:8000 weight=2; server 10.0.0.3:80...Want to keep yourself up to date with the latest news from IDC.Net?
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