解决方法：
mkdir -p /etc/systemd/system/nginx.service.d
printf “[Service]\nExecStartPost=/bin/sleep 0.1\n” > /etc/systemd/system/nginx.service.d/override.conf
然后
systemctl daemon-reload
systemctl restart nginx.service
原文：https://blog.csdn.net/wxstar8/article/details/79570805
