访问nginx转发的路径时报502 BAD GATEWAY

1. linux下查看nginx日志

cd /var/log/nginx

发现 2018/10/25 14:26:31 [crit] 20704#0: *13 connect() to 172.17.146.6:8081 failed (13: Permission denied) while connecting to upstream
2 解决方案
进入

cd /usr/sbin/setsebool httpd_can_network_connect true

执行

setsebool -P httpd_can_network_connect=1

写入配置文件