Links

Manual upgrade

Updates between multiple major versions and downgrades are unsupported.

Backup the database, the data directory and the config.php file.

# backup
tar czf /folder/nextcloud.tar.gz nextcloud
sudo mysqldump -rnextcloud.sql nextcloud

# download the latest Nextcloud Server release
wget https://download.nextcloud.com/server/releases/nextcloud-23.0.0.tar.bz2

# unpack it
tar -xjf nextcloud-*.tar.bz2

# disable cron task
sudo crontab -u www-data -e

# stop the web server (apache)
sudo a2dissite nextcloud
sc-reload apache2

# rename old version and move the new one
mv /var/www/nextcloud /var/www/nextcloud-old
mv ~/download/nextcloud /var/www

# copy the config
cp /var/www/nextcloud-old/config/config.php /var/www/nextcloud/config

# copy the data folder
cp /var/www/nextcloud-old/data /var/www/nextcloud

# adjust file ownership and permissions
chown -R www-data:www-data /var/www/nextcloud
find /var/www/nextcloud/ -type d -exec chmod 750 {} \;
find /var/www/nextcloud/ -type f -exec chmod 640 {} \;

# start the web server (apache)
a2ensite nextcloud
sc-reload apache2

# upgrade with the www-data user
chmod 755 /var/www/nextcloud
cd /var/www/nextcloud
sudo -u www-data php occ upgrade
chmod 750 /var/www/nextcloud

# disable the maintenance mode if required
sudo -u www-data php occ maintenance:mode --off

# enable cron task
sudo crontab -u www-data -e

Nextcloud Security Scan

Configuration

/etc/apache2/sites-available/nextcloud.conf

<VirtualHost *:80>
    ServerName nextcloud.domain.fr
    Redirect   / https://nextcloud.domain.fr/
</VirtualHost>

<VirtualHost _default_:443>
    ServerName nextcloud.domain.fr
    DocumentRoot /var/www/nextcloud
    
    SSLCertificateFile      /etc/letsencrypt/live/domain.fr/fullchain.pem
    SSLCertificateKeyFile   /etc/letsencrypt/live/domain.fr/privkey.pem
    Include                 /etc/letsencrypt/options-ssl-apache.conf
    
    <FilesMatch "\.php$">
        SSLOptions +StdEnvVars
    </FilesMatch>

    ErrorLog ${APACHE_LOG_DIR}/nextcloud-error.log
    CustomLog ${APACHE_LOG_DIR}/nextcloud-access.log combined
    
    <IfModule mod_headers.c>
        Header always set Strict-Transport-Security "max-age=15768000; preload"
    </IfModule>
    
    <Directory /var/www/nextcloud>
        Options FollowSymlinks
        AllowOverride all
        Require all granted
    </Directory>
</VirtualHost>

Pretty URL

config/config.php

  'overwrite.cli.url' => 'https://nextcloud.domain.fr/',
  'htaccess.RewriteBase' => '/',

sudo -u www-data php /var/www/nextcloud/occ maintenance:update:htaccess

Server tuning

PHP

/etc/php/8.2/fpm/php.ini

[opcache]
opcache.interned_strings_buffer=16

# restart PHP FPM
sc-restart php8.2-fpm.service

PHP-FPM

/etc/php/7.4/fpm/pool.d/nextcloud.conf

pm = dynamic
pm.max_children = 120
pm.start_servers = 12
pm.min_spare_servers = 6
pm.max_spare_servers = 18

MySQL

/etc/mysql/conf.d/mysql.cnf

[mysqld]
innodb_buffer_pool_size=1G
innodb_io_capacity=4000

Background jobs

# edit crontab for user www-data
sudo crontab -u www-data -e

# run cron.php every 5 minutes
*/5  *  *  *  * php -f /var/www/nextcloud/cron.php

With admin account, change the Settings → Administration → Basic settings → Background jobs = Cron

Settings

Email server

Setting	Value
Send mode	SMTP
Authentication method	None: to send emails on the domain only Plain: to send emails to other domains (cf Postfix smtpd_relay_restrictions)
Authentication required	use same credential as for roundcube
Server address	smtp.domain.fr:25

Apps

Installer des Apps:

se connecter en admin
cliquer sur l'icone du profile en haut à droite → Apps

Deck

Outils de gestion de taches similaire à Trello

Mail

Talk

Chat, video & audio calls

Calendar

Installation sur Ubuntu 18.04

cd /var/www
wget https://download.nextcloud.com/server/releases/nextcloud-17.0.0.tar.bz2
tar -xvjf nextcloud-17.0.0.tar.bz2

sudo chown www-data:www-data -R /var/www/nextcloud

# vérifier que les modules php suivant sont bien installés
dpkg -l php-zip php-gd php-curl php-imagick

create database nextcloud;
grant all privileges on nextcloud.* to 'nextcloud'@'localhost' identified by 'password';
flush privileges;

Errors

Memcache \OC\Memcache\APCu not available for local cache

/etc/php/7.4/mods-available/apcu.ini

apc.enable_cli=1

The PHP memory limit is below the recommended value of 512MB

/etc/php/7.4/apache2/php.ini

memory_limit = 512M

MySQL is used as database but does not support 4-byte characters

A memcache is not required and you may safely ignore the warning if you prefer

config/config.php

  'memcache.local' => '\OC\Memcache\APCu',