vim /usr/local/nginx/conf/nginx.conf user root root; #取消注释，修改用户为root,组为root systemctl restart nginx ps aux | grep nginx 主进程由root创建，子进程由nginx创建

vim /usr/local/nginx/conf/nginx.conf http { ...... server { ...... location / { root HTML; index index.html index.htm; } location ~ \.(gif|jpg|jpeg|png|bmp|ico)$ { #加入新的 location，以图片作为缓存对象 root html; expires 1d; #指定缓存时间，1天 } ...... } } systemctl restart nginx