nginx 读取文件 permission denied

nginx 是在root用户下安装的，静态网页的目录/var/www/html/ 目录下的内容所有者也是root 用户，按照 nginx配置文件中location说明 配置静态文件访问地址。

使用网址访问后出现错误日志显示如下

root@localhost:/etc/nginx# more /var/log/nginx/error.log
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [error] #: * directory index of "/var/www/html/show/project/" is forbidden, client: 101.228.94.31, server: _, request: "GET /show/project/ H
TTP/1.1", host: "45.78.33.187"
// :: [error] #: * directory index of "/var/www/html/show/project/" is forbidden, client: 101.228.94.31, server: _, request: "GET /show/project/ H
TTP/1.1", host: "45.78.33.187"
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [emerg] #: invalid number of arguments in "root" directive in /etc/nginx/sites-enabled/default:
// :: [notice] #: signal process started
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"
// :: [error] #: * open() "/var/www/html/show/project/test1.html" failed (: Permission denied), client: 101.228.94.31, server: _, request: "GET
/show/project/test1.html HTTP/1.1", host: "45.78.33.187"

修改配置文件的 user 配置，改为 root，默认位置是 /etc/nginx/nginx.cnf。

修改好后重启nginx，使用命令如下

nginx -s reload

重新访问页面正常了。