Nextcloud

First steps

Install owncloud from the official repositories. Alternatively see the packages available in the Arch User Repository: [1]. Uncomment extensions in /etc/php/php.ini:

 gd.so
 intl.so
 openssl.so
 xmlrpc.so
 zip.so
 iconv.so

Database support

Depending on which database backend you are going to use uncomment either one of the following extensions in /etc/php/php.ini:

SQLite	MySQL	PostgreSQL
sqlite.so sqlite3.so pdo_sqlite.so	mysql.so pdo_mysql.so	pgsql.so pdo_pgsql.so

Don't forget to install the appropriate php-module for the database. In the PostgreSQL case thats php-pgsql or for SQLite php-sqlite.

Exif support

Additionally install exif support with

 # pacman -S exiv2

and uncomment the exif.so extension in php.ini

Docker

A quick and safe alternative to installing and configuring ownCloud on your own is to use a Docker linux container. You can find several images of fully working LAMP stack with pre-installed ownCloud in the Docker repositories. Docker containers are generally safer then a chroot environment and the overhead is very low, ownCloud in docker works smoothly even on quite old machines. The whole setup including installing Docker and ownCloud image is considerably easier and quicker than a native installation.

Apache configuration

Installation

Set up the LAMP stack.

You will probably need to install the MDB2 pear package as well. Install php-pear, then:

 # pear install MDB2

Copy /etc/webapps/owncloud/apache.example.conf to /etc/httpd/conf/extra/owncloud.conf (version 6+)
Add the following lines into /etc/httpd/conf/httpd.conf (the php5 line should have already been added during the LAMP stack setup):

 Include /etc/httpd/conf/extra/owncloud.conf
 LoadModule php5_module modules/libphp5.so
 Include conf/extra/php5_module.conf

Since apache 2.4 you might need to adjust owncloud.conf and replace

   Order allow,deny
   Allow from all

with

   Require all granted

Disable Webdav

Owncloud comes with its own Webdav enabled which conflict. Owncloud recommends to disable mod_dav and mod_dav_fs. This should be done in /etc/httpd/conf/httpd.conf

Now restart httpd (Apache)

 # systemctl restart httpd

Open http://localhost in your browser. You should now be able to create a user account and follow the installation wizard.

Custom configurations

Filesize limitations

With the default configuration ownCloud only allows the upload of filesizes less than 2MB. This can be changed by changing the following line in /etc/php/php.ini to your liking.

Warning: As of version 4.0 this is no longer necessary! The maximum upload size is now set via the ownCloud gui

 upload_max_filesize = 2M

As of version 4.5, upload limits are set in /usr/share/webapps/owncloud/.htaccess. This won't work if PHP is set up to run as CGI, so you need to change the limits in /etc/php/php.ini. You also need to change open_basedir.

upload_max_filesize = 512M
post_max_size = 512M
memory_limit = 512M
open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/:/usr/share/webapps/

Running ownCloud in a subdirectory

By including the default owncloud.conf in httpd.conf, owncloud will take control of port 80 and your localhost domain. If you would like to have owncloud run in a subdirectory, then skip the 'Include /etc/httpd/conf/extra/owncloud.conf' line altogether and just use a symbolic link like so:

# ln -s /usr/share/webapps/owncloud/ /srv/http/

In that case, you'll also have to ensure /usr/share/webapps is in the open_basedir line of php.ini, and that per-directory .htaccess files are read by apache.

Alternatively, you could follow the standard procedure, but comment out the VirtualHost part of the include file, and skip the symlink/basedir/htaccess part.

Filling ownCloud with data

Small files

WebDav

Always use WebDAV or the web interface to add new files to your ownCloud. Otherwise they will not show up correctly, as they do not get indexed right. No further configuration is necessary to enable WebDAV uploads in ownCloud.

Consider installing and enabling php-apc to speed up WebDAV.

SABnzbd

When using SABnzbd, you might want to set

folder_rename 0

in your sabnzbd.ini file, because ownCloud will scan the files as soon as they get uploaded, preventing SABnzbd from removing UNPACKING prefixes etc.

Big files

WebDAV isn't suitable for big files, because it fills up all the RAM and CPU.

With the current version, it looks like, there is no good way of copying huge amounts of data to your ownCloud.

Here's a Workaround:

Copy the files directly to your ownCloud and do a full re-scan of your database (you could use the Re-scan filesystem add-on for example).

But beware that this will not work as easily in the future, when end-to-end encryption gets added to ownCloud (this is a planned feature).

Important notes

When using a subdomain (like cloud.example.net), make sure it is covered by your certificate. Otherwise, connection via the owncloud client or webdav might fail.

If you are planning on using OwnCloud's sync-clients, make sure to have NTP installed and running on your OwnCloud server, otherwise the sync-clients will fail.

Add some SSL encryption to your connection!

(If adding SSL encryption as above, be sure to edit /etc/httpd/conf/extra/httpd-ssl.conf and change DocumentRoot "/srv/http" to DocumentRoot "/usr/share/webapps/owncloud" )

More Apps for ownCloud can be found here

To install an new application, download the zip from the apps store, extract it into /srv/http/owncloud/apps/.

Afterwards restart httpd:

# systemctl restart httpd

log into your server go to the app sections you should see the new apps in there,

If you are protecting access to your owncloud location with HTTP basic auth, the file "status.php" must be excluded from auth and be publicly accessible. [2]

Nginx + uwsgi_php configuration

You can avoid the use of Apache, and run owncloud in it's own process by using the uwsgi-plugin-php application server. uWSGI itself has a wealth of features to limit the resource use, and to harden the security of the application, and by being a separate process it can run under its own user.

First of all you should set up your Nginx server. See the Nginx page for further information.
Set a server with the following lines in the http section of your /etc/nginx/nginx.conf file:

#this is to avoid Request Entity Too Large error
client_max_body_size 1000M;
# deny access to some special files
location ~ ^/(data|config|\.ht|db_structure\.xml|README) {
    deny all;
}
# pass all .php or .php/path urls to uWSGI
location ~ ^(.+\.php)(.*)$ {
    include uwsgi_params;
    uwsgi_modifier1 14;
    uwsgi_pass 127.0.0.1:3001;
}
# everything else goes to the filesystem,
# but / will be mapped to index.php and run through uwsgi
location / {
    root /usr/share/webapps/owncloud;
    index index.php;
    rewrite ^/.well-known/carddav /remote.php/carddav/ redirect;
    rewrite ^/.well-known/caldav /remote.php/caldav/ redirect;
}

Then create a uWSGI config file. /etc/uwsgi/owncloud.ini could be a good choice:

[uwsgi]
master = true
socket = 127.0.0.1:3001

# Change this to where you want ownlcoud data to be stored (maybe /home/owncloud)
owncloud_data_dir = /srv/http/owncloud 
chdir             = %(owncloud_data_dir)

plugins = php
php-docroot     = /usr/share/webapps/owncloud
php-index       = index.php

# only allow these php files, I don't want to inadvertently run something else
php-allowed-ext = /index.php
php-allowed-ext = /public.php
php-allowed-ext = /remote.php
php-allowed-ext = /cron.php
php-allowed-ext = /status.php
php-allowed-ext = /settings/apps.php
php-allowed-ext = /core/ajax/update.php
php-allowed-ext = /core/ajax/share.php
php-allowed-ext = /core/ajax/requesttoken.php
php-allowed-ext = /core/ajax/translations.php
php-allowed-ext = /search/ajax/search.php
php-allowed-ext = /search/templates/part.results.php
php-allowed-ext = /settings/admin.php
php-allowed-ext = /settings/users.php
php-allowed-ext = /settings/personal.php
php-allowed-ext = /settings/help.php
php-allowed-ext = /settings/ajax/getlog.php
php-allowed-ext = /settings/ajax/setlanguage.php
php-allowed-ext = /settings/ajax/setquota.php
php-allowed-ext = /settings/ajax/userlist.php
php-allowed-ext = /settings/ajax/createuser.php
php-allowed-ext = /settings/ajax/removeuser.php
php-allowed-ext = /settings/ajax/enableapp.php
php-allowed-ext = /core/ajax/appconfig.php
php-allowed-ext = /settings/ajax/setloglevel.php

# set php configuration for this instance of php, no need to edit global php.ini
php-set = date.timezone=Etc/UTC
php-set = open_basedir=%(owncloud_data_dir):/tmp/:/usr/share/pear/:/usr/share/webapps/owncloud:/etc/webapps/owncloud
php-set = session.save_path=/tmp/php_sess
php-set = post_max_size=1000M
php-set = upload_max_filesize=1000M

# load all extensions only in this instance of php, no need to edit global php.ini
php-set = extension=pdo_sqlite.so
php-set = extension=exif.so
php-set = extension=gd.so
php-set = extension=imagick.so
php-set = extension=gmp.so
php-set = extension=iconv.so
php-set = extension=mcrypt.so
php-set = extension=sockets.so
php-set = extension=sqlite3.so
php-set = extension=xmlrpc.so
php-set = extension=xsl.so
php-set = extension=zip.so

processes = 10
cheaper = 2
cron = -3 -1 -1 -1 -1 /usr/bin/php -f /usr/share/webapps/owncloud/cron.php 1>/dev/null

You can run it with:

# uwsgi_php --ini /etc/uwsgi/owncloud.ini

Otherwise, a simple systemd unit file to start the uwsgi instance can be (this is without using the emperor):

[Unit]
Description=OwnCloud service via uWSGI-PHP

[Service]
User=http
ExecStart=/usr/bin/uwsgi_php --ini /etc/uwsgi/owncloud.ini
ExecReload=/bin/kill -HUP $MAINPID
KillSignal=SIGQUIT
Restart=always

[Install]
WantedBy=multi-user.target

Sync Clients

The official clients can be found in this page : Sync Clients Also take notice that while the official ownCloud android app is a paid app on the play store, it is not a paid app on F-Droid.

Troubleshooting

Self-signed certificate not accepted

OwnCloud uses Wikipedia:cURL and Wikipedia:SabreDAV to check if WebDAV is enabled. If you use a SSL/TLS with a self-signed certificate, e.g. as shown in LAMP and access ownClouds admin panel, you will see the following error message:

Your web server is not yet properly setup to allow files synchronization because the WebDAV interface seems to be broken.

Assuming that you followed the LAMP-tutorial, execute the following steps:

Create local directory for non-distribution certificates and copy LAMPs certificate there. This will prevent ca-certificates-updates to overwrite it.

# cp /etc/httpd/conf/server.crt /usr/share/ca-certificates/WWW.EXAMPLE.COM.crt

Add WWW.EXAMPLE.COM.crt to /etc/ca-certificates.conf:

WWW.EXAMPLE.COM.crt

Now, regenerate your certificate store:

# update-ca-certificates

Restart the httpd service to activate your certificate.

Should this not work consider disabling mod_curl in /etc/php/php.ini.

Can't create data directory (/path/to/dir)

Check your httpd conf file (like owncloud.conf). Add your data dir to

php_admin_value open_basedir "/srv/http/:/home/:/tmp/:/usr/share/pear/:/usr/share/webapps/:/path/to/dir/"

You should also modify php.ini in the same way. Restart the httpd service to activate the change.

CSync failed to find a specific file.

Most probably a certificate issue, recreate it, and don't leave the common name empty or you will see the error again.

openssl genrsa -out server.key 2048
openssl req -new -key server.key -x509 -days 365 -out server.crt

Seeing white page after login

The cause is probably a new app that you installed, to fix that you can either use phpMyAdmin by editing the oc_appconfig table(in the case you got lucky and the table has edit option) or do it by hand with mysql:

mysql -u root -p owncloud
MariaDB [owncloud]> delete from oc_appconfig where appid='<nameOfExtension>' and configkey='enabled' and configvalue='yes'
MariaDB [owncloud]> insert into oc_appconfig (appid,configkey,configvalue) values ('<nameOfExtension>','enabled','no');

This should delete the relevant configuration from the table and add it again.

GUI sync client fails to connect

If using HTTP basic auth, make sure to exclude "status.php", which must be publicly accessible [3]

"Can't write into apps directory"

As mentioned in the official admin manual either you need an apps directory that is writable by the http user, or you need to set "appstoreenabled" to false.

Also, not mentioned there, the directory needs to be in the open_basedir line in /etc/php/php.ini

One clean method is to have the package-installed directory at /usr/share/webapps/owncloud/apps stay owned by root, and have the user-installed apps go into e.g. /var/www/owncloud/apps which is owned by http. Then you can set "appstoreenabled" to true and package upgrades of apps should work fine as well. Relevant lines from /etc/webapps/owncloud/config/config.php:

  'apps_paths' => 
  array (
    0 => 
    array (
      'path' => '/usr/share/webapps/owncloud/apps',
      'url' => '/apps',
      'writable' => false,
    ),
    1 => 
    array (
      'path' => '/var/www/owncloud/apps',
      'url' => '/wapps',
      'writable' => true,
    ),
  ),

Example open_basedir line from /etc/php/php.ini (you might have other dirs in there as well):

open_basedir = /srv/http/:/usr/share/webapps/:/var/www/owncloud/apps/

Directory permissions:

$ ls -ld /usr/share/webapps/owncloud/apps /var/www/owncloud/apps/
drwxr-xr-x 26 root root 4096 des.  14 20:48 /usr/share/webapps/owncloud/apps
drwxr-xr-x  2 http http   48 jan.  20 20:01 /var/www/owncloud/apps/