centos7 nginx Failed to read PID from file /run/nginx.pid: Invalid argument 解决方法

笔者在centos7上，配置nginx代理服务后，
systemctl status nginx.service

提示错误
Failed to read PID from file /run/nginx.pid: Invalid argument

看到好多说删掉改nginx.pid 文件的，试之，无效。

后来找到了一个方法：
mkdir -p /etc/systemd/system/nginx.service.d
printf "[Service] ExecStartPost=/bin/sleep 0.1 " > /etc/systemd/system/nginx.service.d/override.conf

然后
systemctl daemon-reload
systemctl restart nginx.service
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作者：katios
来源：CSDN
原文：https://blog.csdn.net/sinat_21302587/article/details/72722096
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