Configure Web Station 

• In the Synology packet manager open Web Station
• In the left menu select General Settings
  • Set HTTP back-end server to Apache HTTP Server 2.4
  • Try to set PHP to PHP 7.3. If you are limited to 5.6 check the next section.

Optional: If Web Station does not allow to set PHP 7.3

• In Web Station select PHP Settings in the left menu
• Click on Create to create a new profile
  • Under General Settings tab:
    • Assign name (e.g. PHP 7.3 profile)
    • Assign description (e.g. using PHP 7.3)
    • Enable checkboxes for:
      • Enable PHP cache
      • Enable display_errors to display PHP error message
      • Customize PHP open_basedir
        • Enter: /dev/urandom:/var/services/tmp:/volume1/web:/volume1/web/nextcloud:/volume1/YOUR_NEXTCLOUD_DATA_FOLDER
    • Select and enable all extensions
  • Select Core tab
    • mysql.default_port=3307 (this is the default port for MariaDB 10)
    • memory_limit=512M
    • 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

Install Nextcloud 

• Download the server zip file from: https://nextcloud.com/install/#instructions-server
• Extract the zip in your Web Station directory, e.g. /volume1/web
• Make sure owner/group are correct:

chown -R http:http /volume1/web/nextcloud

• Change file permissions: 

find /volume1/web/nextcloud/ -type f -print0 | xargs -0 chmod 777

• Change directory permissions: 

find /volume1/web/nextcloud/ -type d -print0 | xargs -0 chmod 777

• Create your data folder and assign permissions:

mkdir /volume1/YOUR_NEXTCLOUD_DATA_FOLDER
chown http:http /volume1/YOUR_NEXTCLOUD_DATA_FOLDER
chmod 777 /volume1/YOUR_NEXTCLOUD_DATA_FOLDER

• Open Synology File Station and check properties of your data folder. Owner and permissions should be set correctly to http 
• If your data folder is inside a shared folder, open Synology Shared Folder app and edit your shared folder
  • Under Permissions tab select Local Groups and make sure http has read/write access

Configure Nextcloud

• Using your favorite browser open http://YOUR_DISKSTATION/nextcloud
• In the welcome screen pick choose your administrator username/password
• Click on "Storage & Database"
  • Under Data folder point to your data folder, e.g. /volume1/YOUR_NEXTCLOUD_DATA_FOLDER
  • Select MySQL/MariaDB as database
    • Use root as username and the password you set earlier in section "Configure MariaDB root password"
    • Database name can be anything, e.g. nextcloud
    • Change "localhost" to "127.0.0.1:3307"
  • Click on Finish Setup... Nextcloud will now create the database and fill the data folder with demo file
  • You might see error 504! Just wait and try again later browsing to http://YOUR_DISKSTATION/nextcloud until you see a login screen

Optional: Remap Web Station root directory

In case Nextcloud is the only web page running in your Web Station you might want to change the root folder from /volume1/web to /volume1/web/nextcloud

• cd /var/services
• rm web (default a soft link to /volume1/web)
• ln -s /volume1/your share/new www root/ web