CentOS, Nginx: 403 Forbidden in Laravel's folder - php

Question

I use laravel new test to establish the Laravel project and move all directories into /usr/share/nginx/html/, the default root directory of Nginx.
In order to check if the config of nginx is correct, I simply the config, trun on autoindex, and put index,html into /usr/share/nginx/html/test/public/, the location of index.php of laravel.
defaul.conf of nginx
server {
listen 80;
server_name localhost;
#charset koi8-r;
#access_log /var/log/nginx/host.access.log main;
root /usr/share/nginx/html/test;
index index.html index.htm index.php;
location / {
autoindex on;
}
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
When I access the index.html by localhost/public/, nginx returns me 403. I copy index.html into a new folder named /usr/share/nginx/html/test/public_b, and try to access the new index.html by localhost/public_b/. Nginx returns me the correct content! It is like a miracle. The stats of my directories as the follows.
$ll /usr/share/html/test
total 432
drwxrwxr-x. 6 nginx nginx 84 Feb 26 15:39 app
-rw-rw-r--. 1 nginx nginx 1686 Feb 26 15:39 artisan
drwxrwxr-x. 3 nginx nginx 34 Feb 26 15:39 bootstrap
-rw-rw-r--. 1 nginx nginx 1512 Feb 26 15:39 composer.json
-rw-rw-r--. 1 nginx nginx 145089 Feb 26 15:39 composer.lock
drwxrwxr-x. 2 nginx nginx 247 Feb 26 15:39 config
drwxrwxr-x. 5 nginx nginx 72 Feb 26 15:39 database
-rwxrwxr-x. 1 nginx nginx 13 Feb 26 17:46 index.html
-rw-rw-r--. 1 nginx nginx 1150 Feb 26 15:39 package.json
-rw-rw-r--. 1 nginx nginx 1040 Feb 26 15:39 phpunit.xml
drwxr-xr-x. 4 root root 116 Feb 26 18:05 public
drwxr-xr-x. 2 root root 24 Feb 26 17:50 public_c
drwxrwxr-x. 5 nginx nginx 45 Feb 26 15:39 resources
drwxrwxr-x. 2 nginx nginx 75 Feb 26 16:50 routes
-rw-rw-r--. 1 nginx nginx 563 Feb 26 15:39 server.php
drwxr-xr-x. 5 nginx nginx 46 Feb 26 15:39 storage
drwxrwxr-x. 4 nginx nginx 83 Feb 26 15:39 tests
drwxrwxr-x. 37 nginx nginx 4096 Feb 26 15:40 vendor
-rw-rw-r--. 1 nginx nginx 549 Feb 26 15:39 webpack.mix.js
-rw-rw-r--. 1 nginx nginx 258941 Feb 26 15:39 yarn.lock
$ ll /usr/share/nginx/html/test/public
total 12
drwxrwxr-x. 2 nginx nginx 21 Feb 26 15:39 css
-rw-rw-r--. 1 nginx nginx 0 Feb 26 15:39 favicon.ico
-rwxr-xr-x. 1 root root 13 Feb 26 17:49 index.html
-rw-rw-r--. 1 nginx nginx 1823 Feb 26 15:39 index.php
drwxrwxr-x. 2 nginx nginx 20 Feb 26 15:39 js
-rw-rw-r--. 1 nginx nginx 24 Feb 26 15:39 robots.txt
$ ll /usr/share/nginx/html/test/public_c/
total 4
-rwxr-xr-x. 1 root root 13 Feb 26 17:50 index.html
I have read a lot of relative questions and pages, but nothing help against this problem. What is wrong in my actions or settings?
Update
Thanks #Adam Kozlowski. I tried chmod 777 public -R and changing owner to both of root and nginx, but the problem was not solved.

Answer 1

I found the problem: SELinux blocked Nginx to access the folders.
$ ls /usr/share/nginx/html/test/ -Z
drwxr-xr-x. root root unconfined_u:object_r:config_home_t:s0 public
drwxr-xr-x. root root unconfined_u:object_r:httpd_sys_content_t:s0 public_c
Only the files with the tag, httpd_sys_content_t, can be accessed by HTTP.
Command:
chcon -R -t httpd_sys_content_t /usr/share/nginx/html/test
And I also need to add httpd_sys_rw_content_t to /usr/share/nginx/html/test/storage to let Laravel work.
Command:
chcon -R -t httpd_sys_rw_content_t/usr/share/nginx/html/test/storage
Referring Permissions Issue with Laravel on CentOS

Answer 2

Set proper permission for directory, as a root user:
chmod a+rwx directory-name -R