Migrate Owncloud to Nextcloud

https://nextcloud.com/migration/

Ubuntu 16.04

Automigration did fail at deleting old files (Delete old files; Could not unlink: xxx ...)

Change DNS name. e.g. nextcloud.example.com

• cd /var/www
• Backup:
  • cp -a owncloud owncloud_backup_`date -I`
  • mysqldump --add-drop-table owncloud > owncloud_backup_`date -I`.sql
• apt-get install apache2 mysql-server mysql-client php php-cli libapache2-mod-php php-mysql php-gd php-json php-curl php-mbstring php-intl php-imagick php-xml php-zip unzip php-bz2 php-mcrypt php-gmp php-redis php-cli php-common
• sudo -u www-data php owncloud/occ --version
  • ownCloud version 9.1.4
  • https://download.nextcloud.com/server/releases/

  • Get matching Nextcloud release, see https://nextcloud.com/migration/

    • ownCloud 9.0.x is compatible with Nextcloud 9.0.x

    • ownCloud 9.1.x is compatible with Nextcloud 10.0.x

    • ownCloud 10.0.x is compatible with Nextcloud 12.0.x

• wget https://download.nextcloud.com/server/releases/latest-10.zip

• unzip latest-10.zip

• chown -R www-data:www-data nextcloud

mysql

• mysql -e "CREATE DATABASE nextcloud CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;GRANT ALL ON nextcloud.* to nextcloud@localhost IDENTIFIED by 'mypassword';FLUSH PRIVILEGES;"
• vi /etc/mysql/my.cnf

  • [mysqld]
    innodb_large_prefix=on
    innodb_file_format=barracuda
    innodb_file_per_table=true
    
    character-set-server=utf8mb4
    collation-server=utf8mb4_general_ci
    
    [client]
    default-character-set=utf8mb4
    
    [mysql]
    default-character-set=utf8mb4

• service mysql restart

apache / php

• a2enmod rewrite headers env dir mime ssl
• vi /etc/php/7.0/apache2/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

• vi /etc/apache2/sites-available/tempPort80.conf
  • <VirtualHost *:80>
        ServerAdmin admin@example.com
        ServerName example.com
        ServerAlias www.example.com
        DocumentRoot /var/www/html
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
    </VirtualHost>
• echo "Nothing to see here..." > /var/www/html/index.html
• a2ensite tempPort80
• vi /etc/apache2/ports.conf
  • Uncomment "Listen 80"
• service apache2 restart

letsencrypt

• add-apt-repository ppa:certbot/certbot
• apt-get update
• apt-get install python-certbot-apache
• certbot certonly --apache -d nextcloud.example.com

nextcloud apache vhost

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

  • <VirtualHost *:443>
            ServerName nextcloud.example.com
            ServerAdmin office@example.com
            DocumentRoot /var/www/nextcloud
    
            ErrorLog ${APACHE_LOG_DIR}/nextcloud_error.log
            CustomLog ${APACHE_LOG_DIR}/nextcloud_access.log combined
    
            SSLEngine on
            SSLCertificateFile /etc/letsencrypt/live/nextcloud.example.com/fullchain.pem
            SSLCertificateKeyFile /etc/letsencrypt/live/nextcloud.example.com/privkey.pem
            Include /etc/letsencrypt/options-ssl-apache.conf
    
    
            <Directory /var/www/nextcloud/>
                    Options +FollowSymlinks -Indexes
                    AllowOverride All
    
                    <IfModule mod_dav.c>
                            Dav off
                    </IfModule>
    
                    SetEnv HOME /var/www/nextcloud
                    SetEnv HTTP_HOME /var/www/nextcloud
    
                    Header always add Strict-Transport-Security "max-age=15768000; includeSubDomains; preload"
            </Directory>
    </VirtualHost>

• a2ensite nextcloud
• service apache2 restart

nextcloud with confg and data from owncloud

• cd /var/www/nextcloud
• cp -a ../owncloud_backup_`date -I`/config/config.php config/
• vi config/config.php
  • rename owncloud to nextcloud (e.g. domains, datadirectory, database)
• mv /srv/owncloud/ /srv/nextcloud
• cp -ar ../owncloud_backup_`date -I`/data .
• mysql nextcloud < ../owncloud_backup_`date -I`.sql
• chmod u+x occ
• sudo -u www-data ./occ --version
• sudo -u www-data ./occ upgrade

cron job

• crontab -u www-data -e

  • */15  *  *  *  * nice -n 19 ionice -c3 php -f /var/www/nextcloud/cron.php

Upgrade to subsequent Nextcloud versions

• via Webtool
• Login as admin
• Go to admin settings page
• Scroll to the version number, click update, follow instructions
• Repeat until at latest version

cleanup

• a2dissite owncloud
• rm /etc/apache2/sites-available/owncloud.conf
• service apache2 restart
• certbot delete
• mysql -e "DROP DATABASE owncloud;"
• after a few days/weeks remove backups in /var/www