使用nginx搭建的文件服务器一直提示 404 Not Found ，是文件不存在还是没有权限？

使用nginx搭建一个简单的文件服务器，配置如下

user root;worker_processes auto;error_log /var/log/nginx/error.log;pid /run/nginx.pid;# Load dynamic modules. See /usr/share/nginx/README.dynamic.include /usr/share/nginx/modules/*.conf;events {    worker_connections 10;}http {    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '                      '$status $body_bytes_sent "$http_referer" '                      '"$http_user_agent" "$http_x_forwarded_for"';    access_log  /var/log/nginx/access.log  main;    sendfile            on;    tcp_nopush          on;    tcp_nodelay         on;    keepalive_timeout   65;    types_hash_max_size 2048;    include             /etc/nginx/mime.types;    default_type        application/octet-stream;    autoindex on;               # 显示目录    autoindex_exact_size on;    # 显示文件大小    autoindex_localtime on;     # 显示文件时间    server {        listen       6000 default_server;        listen       [::]:6000 default_server;        server_name  _;        root         /tmp/;        location / {        }        error_page 404 /404.html;                location = /40x.html {        }        error_page 500 502 503 504 /50x.html;                location = /50x.html {        }    }    include /etc/nginx/conf.d/*.conf;}

配置完成后，启动nginx

service nginx restart

没有错误提示，服务正常启动，但是访问时出现了问题，

一直提示：

404 Not Found

通过观察日志发现并没有其他异常

2024/03/20 11:07:49 [error] 26641#26641: *1 "/tmp/index.html" is not found (2: No such file or directory), client: 192.168.0.0, server: _, request: "GET / HTTP/1.1", host: "192.168.0.1:6000"2024/03/20 11:07:49 [error] 26641#26641: *1 open() "/tmp/404.html" failed (2: No such file or directory), client: 192.168.0.0, server: _, request: "GET / HTTP/1.1", host: "192.168.0.1:6000"2024/03/20 11:07:49 [error] 26641#26641: *1 "/tmp/index.html" is not found (2: No such file or directory), client: 192.168.0.0, server: _, request: "GET / HTTP/1.1", host: "192.168.0.1:6000"2024/03/20 11:07:49 [error] 26641#26641: *1 open() "/tmp/404.html" failed (2: No such file or directory), client: 192.168.0.0, server: _, request: "GET / HTTP/1.1", host: "192.168.0.1:6000"

各种检测和调试，发现设置目录为根目录/和其他目录正常，看来是和目录有关系，通过查看配置文件

 cat /usr/lib/systemd/system/nginx.service  [Unit]Description=The nginx HTTP and reverse proxy serverAfter=network-online.target remote-fs.target nss-lookup.targetWants=network-online.target[Service]Type=forkingPIDFile=/run/nginx.pid# Nginx will fail to start if /run/nginx.pid already exists but has the wrong# SELinux context. This might happen when running `nginx -t` from the cmdline.# https://bugzilla.redhat.com/show_bug.cgi?id=1268621ExecStartPre=/usr/bin/rm -f /run/nginx.pidExecStartPre=/usr/sbin/nginx -tExecStart=/usr/sbin/nginxExecReload=/usr/sbin/nginx -s reloadKillSignal=SIGQUITTimeoutStopSec=5KillMode=processPrivateTmp=true  # !!![Install]WantedBy=multi-user.target

上面的PrivateTmp=true这说明这个服务使用到tmp目录是默认会创建一个私有的文件夹来使用，如果不想要使用，只需要把这个true设置为false就可以了，然后重启nginx，可以正常访问