Невозможно записать файл в php с nginx + php-fpm

Question

Я не могу понять, почему функция php is_writable() возвращает всегда false. Я ничего не вижу в журнале об этом, и после поиска часов: я не понимаю, почему.

установки

файла:

[root@localhost owncloud]# ls -la /etc/test 
-rwxrwxrwx. 1 nginx nginx 4 Jul 31 17:41 /etc/test 

test.php

<?php 
    $filename = '/etc/test'; 
    echo exec('whoami'); 
    if (file_exists($filename)) { 
     echo 'Exist'; 
    } else { 
     echo 'NOT exist'; 
    } 
    if (is_writable($filename)) { 
     echo 'writable'; 
    } else { 
     echo 'NOT writable'; 
    } 
?> 

возвращается:

nginx 
Exist 
NOT writable 

Мой Nginx имеет следующую конфигурацию:

/и т.д./Nginx/nginx.conf

user nginx; 
worker_processes 1; 

error_log /var/log/nginx/error.log; 
#error_log /var/log/nginx/error.log notice; 
#error_log /var/log/nginx/error.log info; 

pid  /run/nginx.pid; 

events { 
    worker_connections 1024; 
} 

http { 
    include  /etc/nginx/mime.types; 
    default_type application/octet-stream; 
    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; 
    keepalive_timeout 65; 

    server { 

    listen 8080 ssl; 
    ssl_certificate  /etc/nginx/certs/owncloud.crt; 
    ssl_certificate_key /etc/nginx/certs/owncloud.key; 

    error_log /var/log/nginx/owncloud.log; 
    access_log /var/log/nginx/owncloud.log; 

    server_name owncloud; 

    root /var/www/owncloud; 

    client_max_body_size 10G; # set max upload size 
    fastcgi_buffers 64 4K; 

    rewrite ^/caldav(.*)$ /remote.php/caldav$1 redirect; 
    rewrite ^/carddav(.*)$ /remote.php/carddav$1 redirect; 
    rewrite ^/webdav(.*)$ /remote.php/webdav$1 redirect; 

    index index.php; 
    error_page 403 = /core/templates/403.php; 
    error_page 404 = /core/templates/404.php; 

    location = /robots.txt { 
     allow all; 
     log_not_found off; 
     access_log off; 
    } 

    location ~ ^/(data|config|\.ht|db_structure\.xml|README) { 
     #allow instead of deny for testing purpose  
      allow all; 
    } 

    location/{ 
      rewrite ^/.well-known/host-meta /public.php?service=host-meta last; 
      rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last; 
      rewrite ^/.well-known/carddav /remote.php/carddav/ redirect; 
      rewrite ^/.well-known/caldav /remote.php/caldav/ redirect; 
      rewrite ^(/core/doc/[^\/]+/)$ $1/index.html; 

      try_files $uri $uri/ index.php; 
    } 

    location ~ ^(.+?\.php)(/.*)?$ { 
      try_files $1 = 404; 

      include fastcgi_params; 
      fastcgi_param SCRIPT_FILENAME $document_root$1; 
      fastcgi_param PATH_INFO $2; 
      fastcgi_param HTTPS on; 
      fastcgi_pass 127.0.0.1:9000; 
    } 
    } 
} 

/etc/php-fpm.conf

include=/etc/php-fpm.d/www.conf 
[global] 
pid = /run/php-fpm/php-fpm.pid 
error_log = /var/log/php-fpm/error.log 
log_level = debug 
daemonize = no 

/etc/php-fpm.d/www.conf

[www] 
listen = 127.0.0.1:9000 
listen.allowed_clients = 127.0.0.1 
listen.owner = nginx 
listen.group = nginx 
user = nginx 
group = nginx 
pm = dynamic 
pm.max_children = 50 
pm.start_servers = 5 
pm.min_spare_servers = 5 
pm.max_spare_servers = 35 
slowlog = /var/log/php-fpm/www-slow.log 
php_admin_value[error_log] = /var/log/php-fpm/www-error.log 
php_admin_flag[log_errors] = on 
php_value[session.save_handler] = files 
php_value[session.save_path] = /var/lib/php/session 

Answer 1

Проблема заключалась в том, что SELinux, кажется, чтобы предотвратить Nginx для записи в некоторые файлы. Отключить SELinux решить эту проблему