Hello,
I am using NC12 for a week now and it is working like a charm but i would like to have a proper install, that’s why i am trying to find how to remove the last warnings of my install. I am not able to remove the remainings :
The “X-Frame-Options” HTTP header is not configured to equal to “SAMEORIGIN”. This is a potential security or privacy risk and we recommend adjusting this setting.
No memory cache has been configured. To enhance your performance please configure a memcache if available. Further information can be found in our documentation.
The PHP Opcache is not properly configured. For better performance we recommend ↗ to use following settings in the php.ini:
opcache.enable=1
opcache.enable_cli=1
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=10000
opcache.memory_consumption=128
opcache.save_comments=1
opcache.revalidate_freq=1
I am running NC12, on ubuntu 16 using nginx and MariaDB, i have follow many howto to make sure to don’t miss something but it seems that i am definitively missing something …
For the first one :
The "X-Frame-Options" HTTP header is not configured to equal to "SAMEORIGIN". This is a potential security or privacy risk and we recommend adjusting this setting.
I don’t understand why i have this error as my nextcloud.conf file in /etc/nginx/site-enabled/nextcloud/conf should be correctly configured (including the X-Frame-Options), it is the following :
server {
listen 80;
server_name nextcloud.xx.top;
return 301 https://$server_name$request_uri;
}
server {
listen 443 ssl http2;
server_name nextcloud.xx.top;
ssl_certificate /etc/letsencrypt/live/nextcloud.xx.top/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/nextcloud.xx.top/privkey.pem;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets off;
ssl_protocols TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
# Add headers to serve security related headers
# Before enabling Strict-Transport-Security headers please read into this
# topic first.
add_header Strict-Transport-Security "max-age=15768000;preload" always;
add_header X-Content-Type-Options nosniff;
add_header X-Frame-Options "SAMEORIGIN";
add_header X-XSS-Protection "1; mode=block";
add_header X-Robots-Tag none;
add_header X-Download-Options noopen;
add_header X-Permitted-Cross-Domain-Policies none;
# Path to the root of your installation
root /var/www/nextcloud/;
location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}
# The following 2 rules are only needed for the user_webfinger app.
# Uncomment it if you're planning to use this app.
#rewrite ^/.well-known/host-meta /public.php?service=host-meta last;
#rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json
# last;
location = /.well-known/carddav {
return 301 $scheme://$host/remote.php/dav;
}
location = /.well-known/caldav {
return 301 $scheme://$host/remote.php/dav;
}
location ~ /.well-known/acme-challenge {
allow all;
}
# set max upload size
client_max_body_size 7512M;
fastcgi_buffers 64 4K;
# Disable gzip to avoid the removal of the ETag header
gzip off;
# Uncomment if your server is build with the ngx_pagespeed module
# This module is currently not supported.
#pagespeed off;
error_page 403 /core/templates/403.php;
error_page 404 /core/templates/404.php;
location / {
rewrite ^ /index.php$uri;
}
location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)/ {
deny all;
}
location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) {
deny all;
}
location ~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+|core/templates/40[34])\.php(?:$|/) {
include fastcgi_params;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
#Avoid sending the security headers twice
fastcgi_param modHeadersAvailable true;
fastcgi_param front_controller_active true;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
fastcgi_intercept_errors on;
fastcgi_request_buffering off;
}
location ~ ^/(?:updater|ocs-provider)(?:$|/) {
try_files $uri/ =404;
index index.php;
}
# Adding the cache control header for js and css files
# Make sure it is BELOW the PHP block
location ~* \.(?:css|js)$ {
try_files $uri /index.php$uri$is_args$args;
add_header Cache-Control "public, max-age=7200";
# Add headers to serve security related headers (It is intended to
# have those duplicated to the ones above)
# Before enabling Strict-Transport-Security headers please read into
# this topic first.
add_header Strict-Transport-Security "max-age=15768000;preload" always;
add_header X-Content-Type-Options nosniff;
add_header X-Frame-Options "SAMEORIGIN";
add_header X-XSS-Protection "1; mode=block";
add_header X-Robots-Tag none;
add_header X-Download-Options noopen;
add_header X-Permitted-Cross-Domain-Policies none;
# Optional: Don't log access to assets
access_log off;
}
location ~* \.(?:svg|gif|png|html|ttf|woff|ico|jpg|jpeg)$ {
try_files $uri /index.php$uri$is_args$args;
# Optional: Don't log access to other assets
access_log off;
}
}
Can you tell if my config file is good ? I don’t see anything wrong but i am not expert as you can guess.
For the last issue (i will deal with the cache yet, i want to correct the existing before) :
The PHP Opcache is not properly configured. For better performance we recommend ↗ to use following settings in the php.ini:
I have applied the recommended setting in my php.ini file. Normally i am using php7 (I have also php5 on my system i don’t know why… i don’t know how i can check which version is used to make sure )
Here is the requested content which should be fine :
root@nuci5:~# /etc/php/7.0/cli/php.ini
[opcache]
; Determines if Zend OPCache is enabled
opcache.enable=1
; Determines if Zend OPCache is enabled for the CLI version of PHP
opcache.enable_cli=1
; The OPcache shared memory storage size.
opcache.memory_consumption=128
; The amount of memory for interned strings in Mbytes.
opcache.interned_strings_buffer=8
; The maximum number of keys (scripts) in the OPcache hash table.
; Only numbers between 200 and 100000 are allowed.
opcache.max_accelerated_files=10000
; The maximum percentage of "wasted" memory until a restart is scheduled.
;opcache.max_wasted_percentage=5
; When this directive is enabled, the OPcache appends the current working
; directory to the script key, thus eliminating possible collisions between
; files with the same name (basename). Disabling the directive improves
; performance, but may break existing applications.
;opcache.use_cwd=1
; When disabled, you must reset the OPcache manually or restart the
; webserver for changes to the filesystem to take effect.
;opcache.validate_timestamps=1
; How often (in seconds) to check file timestamps for changes to the shared
; memory storage allocation. ("1" means validate once per second, but only
; once per request. "0" means always validate)
opcache.revalidate_freq=1
; Enables or disables file search in include_path optimization
;opcache.revalidate_path=0
; If disabled, all PHPDoc comments are dropped from the code to reduce the
; size of the optimized code.
opcache.save_comments=1
Even after reboot i still having the warning on the admin page.
If you have few minutes and comments to help me i’ll appreciate it 
Thanks