sudo /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
sudo /usr/local/nginx/sbin/nginx -s reload
完美解决
nginx: [error] invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"
原文：https://www.cnblogs.com/leaf-cq/p/9875241.html
