2019/06/05 15:00:23 [crit] 4332#4332: *1 connect() to 127.0.0.1:8080 failed (13: Permission denied) while connecting to upstream, client: 192.168.1.61, server: localhost, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8080/", host: "192.168.1.139"
https://blog.csdn.net/scorpio3k/article/details/48847611
拓展阅读：
https://jingyan.baidu.com/article/6d704a13409b4128da51ca4e.html
原文：https://www.cnblogs.com/shenwenkai/p/10983895.html