Warning messages after installing Nextcloud server

In a previous post, we installed Nextcloud on Ubuntu Server 16.04 LTS. All good, but once we go to User  – Settings – Basic Settings we see several messages written in red, telling us we need to perform additional tasks.

Now, Nextcloud will work without those corrections, but if we want maximum responsiveness from our server, it’s better to take care of them. Let’s start with the first one:

Your data directory and your files are probably accessible from the internet. Your .htaccess files is not working.

Log in to the server and make a small change in the apache2.conf file:

sudo nano /etc/apache2/apache2.conf

Look for those lines:

<Directory /var/www/>
Options Indexes FollowSymLinks
AllowOverride None
Require all granted

Replace None with All. Then save and close the file and restart the apache service:

sudo service apache2 restart

The first warning message is gone. We are going to ignore the second message (Accessing site insecurely via HTTP), since our server is not public and it doesn’t have a domain name, so it doesn’t need and can’t have an SSL certificate.

No memory cache has been configured. To enhance performance, please configure a memcache

We start by installing APCu and Redis to enable caching. That will make our server faster when displaying media files and generating thumbnails:

sudo apt-get install php-apcu redis-server php-redis
sudo nano /etc/redis/redis.conf

In the file, make the following changes:

  • port 6379 to port 0
  • uncomment the line:   unixsocket /var/run/redis/redis.sock
  • uncomment the line:   unixsocketperm 700
  • on the same line, change 700 to 770

Save and close the file, then add the apache user www-data to the redis group, then restart apache service and start the redis service:

sudo usermod -a -G redis www-data
sudo service apache2 restart
sudo service redis-server start
sudo systemctl enable redis-server

Next, we open the Nextcloud configuration file:

sudo nano /var/www/html/nextcloud/config/config.php

Add the following block of code at the end of the file, BEFORE the last closing bracket:

‘memcache.local’ => ‘\OC\Memcache\Redis’,
‘memcache.locking’ => ‘\OC\Memcache\Redis’,
‘filelocking.enabled’ => ‘true’,
‘redis’ =>
array (
‘host’ => ‘/var/run/redis/redis.sock’,
‘port’ => 0,
‘timeout’ => 0.0,

Reboot the server for the configuration to take effect.

The PHP OPcache is not properly configured

Open the php.ini configuration file:

sudo nano /etc/php/7.0/apache2/php.ini

Find each one of the following lines, un-comment them and change the settings according to the indications in the warning message. (The Ctr-W combination in the nano editor will help with the search):


There is one more consideration. The maximum file size for uploads is set to 2 MB, which is way too small for a photo or a video. So let’s change that to something bigger, like 1 GB or more. In the same file, find and change those two lines:

upload_max_filesize = 1024M
post_max_size = 1050M

We put the second value a little big bigger, to avoid errors when uploading a file that is EXACTLY 1 GB in size.

One more apache2 restart and we’re done.


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