Nginx Backup 报错 502 Bad Gateway
也是线上遇到的问题, 假设nginx配置为
upstream zed { server 192.168.0.1:3000 max_fails=3 fail_timeout=30s; server 192.168.0.2:3000 backup max_fails=3 fail_timeout=30s; } server { listen 80; server_name zed.com; location / { proxy_pass http://zed/; } }
如果 192.168.0.1:3000 和 192.168.0.1:3000 同时down掉, 且被nginx重试了3次。立马 192.168.0.1:3000 和 192.168.0.1:3000恢复的情况下,服务还会无法访问持续30s