nginx的error.log日志报错：
2018/01/25 11:55:22 [emerg] 3380#15488: bind() to 0.0.0.0:20003 failed (10013: An attempt was made to access a socket in a way forbidden by its access permissions)
处理：
20003端口已被占用，换个端口即可。
nginx的error.log日志报错：
2018/01/25 11:55:22 [emerg] 3380#15488: bind() to 0.0.0.0:20003 failed (10013: An attempt was made to access a socket in a way forbidden by its access permissions)
处理：
20003端口已被占用，换个端口即可。