This is the german tutorial for it.
This article shows you how to install your own Nextcloud on Ubuntu 23.X or 22.X LTS!

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updating

apt update && apt upgrade -y

Installing apache

apt install apache2

Install PHP 8.2

apt install software-properties-common
add-apt-repository ppa:ondrej/php
apt update

Install PHP & Moduls

apt install apt install libapache2-mod-php php php-zip php-dompdf php-xml php-mbstring php-gd php-curl php-imagick libmagickcore-6.q16-6-extra php-intl php-bcmath php-gmp php-cli php-json php-mysql php-pear unzip nano php-apcu redis-server ufw php-redis php-smbclient php-ldap


If you are asked to confirm something during any installation, you must also do this.

adjust PHP.ini file

nano /etc/php/8.2/apache2/php.ini

memory_limit = 2048M
upload_max_filesize = 20G
post_max_size = 20G
date.timezone = Europe/Berlin
output_buffering = Off

Install Databse Server

apt install mariadb-server

Maria DB Server Konfiguration

mysql_secure_installation

open SQL dialoge

mysql

create database calles nextcloud

CREATE DATABASE nextcloud;

create database user with password

CREATE USER 'nextclouduser'@'localhost' IDENTIFIED BY 'password_here';

grant accesss to databse

GRANT ALL PRIVILEGES ON nextcloud.* TO 'nextclouduser'@'localhost';

save changes and exit

FLUSH PRIVILEGES;

EXIT;


Download lastest nextcloud version

cd /tmp && wget https://download.nextcloud.com/server/releases/latest.zip
unzip latest.zip

mv nextcloud /var/www/


adjust apache conf

nano /etc/apache2/sites-available/000-default.conf

-> change /var/www/html to /var/www/nextcloud

Enable the NextCloud and Rewrite Module

a2enmod rewrite
a2enmod headers
a2enmod env
a2enmod dir
a2enmod mime


restart apache

service apache2 restart

prepare data folder

mkdir /home/data/
chown -R www-data:www-data /home/data/
chown -R www-data:www-data /var/www/nextcloud/
chmod -R 755 /var/www/nextcloud/