Manual Installation on Linux

Install the Required Packages

When Are Stable Channel Packages Updated?

Packages in the supported distributions’ stable channels are not immediately updated following a release. This is because we need to make sure that the release is sufficiently stable, as many people use automatic updates. By waiting a number of business days after a tarball has been released, we are able to make this assessment, based on a number of criteria which include the submitted bug reports from systems administrators.

If you are planning on running additional apps, keep in mind that you might require additional packages. See the prerequisites list for details.

Ubuntu 18.04 LTS Server

To prepare your Ubuntu 18.04 server for the use with ownCloud, follow the Ubuntu 18.04 preparation guide.

Install ownCloud

Now download the archive of the latest ownCloud version:

  • Go to the ownCloud Download Page.

  • Go to Download ownCloud Server > Download > Archive file for server owners and download either the tar.bz2 or .zip archive.

  • This downloads a file named owncloud-x.y.z.tar.bz2 or (where x.y.z is the version number).

  • Download its corresponding checksum file, e.g., owncloud-x.y.z.tar.bz2.md5, or owncloud-x.y.z.tar.bz2.sha256.

  • Verify the MD5 or SHA256 sum:

    md5sum -c owncloud-x.y.z.tar.bz2.md5 < owncloud-x.y.z.tar.bz2
    sha256sum -c owncloud-x.y.z.tar.bz2.sha256 < owncloud-x.y.z.tar.bz2
    md5sum  -c <
    sha256sum  -c <
  • You may also verify the PGP signature:

    gpg --import owncloud.asc
    gpg --verify owncloud-x.y.z.tar.bz2.asc owncloud-x.y.z.tar.bz2
  • Now you can extract the archive contents. Run the appropriate unpacking command for your archive type:

    tar -xjf owncloud-x.y.z.tar.bz2
  • This unpacks to a single owncloud directory. Copy the ownCloud directory to its final destination. When you are running the Apache HTTP server, you may safely install ownCloud in your Apache document root:

    cp -r owncloud /path/to/webserver/document-root

    where /path/to/webserver/document-root is replaced by the document root of your Web server:

    cp -r owncloud /var/www

On other HTTP servers, it is recommended to install ownCloud outside of the document root.

Configure the Web Server

Configure Apache

On Debian, Ubuntu, and their derivatives, Apache installs with a useful configuration, so all you have to do is create an /etc/apache2/sites-available/owncloud.conf file with these lines in it, replacing the Directory and other file paths with your own file paths:

Alias /owncloud "/var/www/owncloud/"

<Directory /var/www/owncloud/>
  Options +FollowSymlinks
  AllowOverride All

 <IfModule mod_dav.c>
  Dav off

Then create a symlink to /etc/apache2/sites-enabled:

ln -s /etc/apache2/sites-available/owncloud.conf /etc/apache2/sites-enabled/owncloud.conf

Additional Apache Configurations

  • For ownCloud to work correctly, we need the module mod_rewrite. Enable it by running: a2enmod rewrite. Additionally recommended modules are mod_headers, mod_env, mod_dir, mod_mime, and mod_unique_id. To enable them, run the following commands:

      a2enmod headers
      a2enmod env
      a2enmod dir
      a2enmod mime
      a2enmod unique_id
    If you want to use the OAuth2 app, then mod_headers must be installed and enabled.
  • You must disable any server-configured authentication for ownCloud, as it uses Basic authentication internally for DAV services. If you have turned on authentication on a parent folder (via, e.g., an AuthType Basic directive), you can disable the authentication specifically for the ownCloud entry. Following the above example configuration file, add the following line in the <Directory section

    Satisfy Any
  • When using SSL, take special note of the ServerName. You should specify one in the server configuration, as well as in the CommonName field of the certificate. If you want your ownCloud to be reachable via the internet, then set both of these to the domain you want to reach your ownCloud server.

  • Now restart Apache

    service apache2 restart
  • If you’re running ownCloud in a sub-directory and want to use CalDAV or CardDAV clients make sure you have configured the correct Service Discovery URLs.

Apache Mod_Unique_Id Configuration

Provides a magic token for each request which is guaranteed to be unique across "all" requests under very specific conditions.

If you enable the module, there is nothing else that you have to do, as ownCloud automatically includes the UNIQUE_ID environment variable, which the module makes available, in ownCloud’s log file.

To confirm that it’s working though, check that the UNIQUE_ID environment variable is being set, by running phpinfo() (as in the screenshot below).

phpinfo() showing that Apache is sending the UNIQUE_ID value from mod_unique_id

Next, compare the value set for UNIQUE_ID in the output of phpinfo() with the value in ownCloud’s log file, to ensure that they’re the same. In the example below, you can see an example log entry, where ownCloud is logging the unique id provided by Apache, as the value for the first key reqId in the record.

	"reqId": "XDyankIou@F-GwxW82dx7QAAAAo",
	"level": 3,
	"time": "2019-01-14T14:20:14+00:00",
	"remoteAddr": "",
	"user": "--",
	"app": "PHP",
	"method": "GET",
	"url": "\/index.php\/apps\/files\/?dir=\/Documents&fileid=26",
	"message": "..."

Enable SSL

You can use ownCloud over plain HTTP, but we strongly encourage you to use SSL/TLS to encrypt all of your server traffic, and to protect user’s logins and data in transit.

Apache installed under Ubuntu comes already set-up with a simple self-signed certificate. All you have to do is to enable the ssl module and the default site. Open a terminal and run:

a2enmod ssl
a2ensite default-ssl
service apache2 reload
Self-signed certificates have their drawbacks - especially when you plan to make your ownCloud server publicly accessible. You might want to consider getting a certificate signed by a commercial signing authority. Check with your domain name registrar or hosting service for good deals on commercial certificates.

Multi-Processing Module (MPM)

Apache prefork has to be used. Don’t use a threaded MPM like event or worker with mod_php, because PHP is currently not thread safe.

Run the Installation Wizard

After restarting Apache, you must complete your installation by running either the Graphical Installation Wizard or on the command line with the occ command. To enable this, temporarily change the ownership on your ownCloud directories to your HTTP user

Refer to the Set Strong Directory Permissions section to learn how to find your HTTP user):
chown -R www-data:www-data /var/www/owncloud/
Admins of SELinux-enabled distributions may need to write new SELinux rules to complete their ownCloud installation; see the SELinux guide for a suggested configuration.

To use occ refer to the command-line installation details. To use the graphical Installation Wizard refer to the installation_wizard.

Please know that ownCloud’s data directory must be exclusive to ownCloud and not be modified manually by any other process or user.


ownCloud has a mechanism to set headers programmatically. These headers are set with the always directive to avoid errors when there are additional headers set in the web servers configuration file like http.conf. More information on headers can be found in the mod_headers documentation.

Set Strong Directory Permissions

After completing the installation, you must immediately set the directory permissions in your ownCloud installation as strictly as possible for stronger security. After you do so, your ownCloud server will be ready to use.

Managing Trusted Domains

All URLs used to access your ownCloud server must be white-listed in your config.php file, under the trusted_domains setting. Users are allowed to log into ownCloud only when they point their browsers to a URL that is listed in the trusted_domains setting.

This setting is important when changing or moving to a new domain name. You may use IP addresses and domain names.

A typical configuration looks like this:

'trusted_domains' => [
   0 => 'localhost',
   1 => '',
   2 => '',

The loopback address,, is automatically white-listed, so as long as you have access to the physical server you can always log in. In the event that a load-balancer is in place, there will be no issues as long as it sends the correct X-Forwarded-Host header.

For further information on improving the quality of your ownCloud installation, please see the configuration notes and tips guide.
Admins of SELinux-enabled distributions such as CentOS, Fedora, and Red Hat Enterprise Linux may need to set new rules to enable installing ownCloud. See SELinux for a suggested configuration.


The ownCloud tar archive contains all of the required third-party PHP libraries. As a result, no extra ones are, strictly, necessary. However, ownCloud does require that PHP has a set of extensions installed, enabled, and configured.

This section lists both the required and optional PHP extensions. If you need further information about a particular extension, please consult the relevant section of the extensions section of the PHP manual.

If you are using a Linux distribution, it should have packages for all the required extensions. You can check the presence of a module by typing php -m | grep -i <module_name>. If you get a result, the module is present.


PHP Version

PHP 7.2, 7.3, and 7.4

ownCloud recommends the use of PHP 7.2 in new installations. Sites using a version earlier than PHP 7.2 are strongly encouraged to migrate to PHP 7.2.

PHP Extensions

Name Description


For character type checking


Used for aspects of HTTP user authentication


For operating on XML documents through the DOM API


For creating and manipulating image files in a variety of different image formats, including GIF, PNG, JPEG, WBMP, and XPM.

HASH Message Digest Framework

For working with message digests (hash).


For working with the iconv character set conversion facility.


Increases language translation performance and fixes sorting of non-ASCII characters


For working with the JSON data-interchange format.


This is required for the DOM, libxml, SimpleXML, and XMLWriter extensions to work. It requires that libxml2, version 2.7.0 or higher, is installed.

Multibyte String

For working with multibyte character encoding schemes.


For symmetric and asymmetric encryption and decryption, PBKDF2, PKCS7, PKCS12, X509 and other crypto operations.


This is required for the pdo_msql function to work.


For working with PHP Archives (.phar files).


For working with UNIX POSIX functionality.


For working with XML files as objects.


For generating streams or files of XML data.


For reading and writing ZIP compressed archives and the files inside them.


For reading and writing gzip (.gz) compressed files.

The Phar, OpenSSL, and cUrl extensions are mandatory if you want to use Make to setup your ownCloud environment, prior to running either the web installation wizard, or the command line installer.

Database Extensions

Name Description


For working with MySQL & MariaDB.


For working with PostgreSQL. It requires PostgreSQL 9.0 or above.


For working with SQLite. It requires SQLite 3 or above. This is, usually, not recommended for performance reasons.

Required For Specific Apps

Name Description


For working with FTP storage


For working with SFTP storage


For IMAP integration


For LDAP integration


For SMB/CIFS integration

SMB/Windows Network Drive mounts require the PHP module smbclient version 0.8.0+. See SMB/CIFS.


Extension Reason


Required for extraction of applications


Highly recommended, as it enhances file analysis performance


Increases file encryption performance


Required for accessing HTTPS resources


Required for creating and modifying images and preview thumbnails

For Specific Apps

Extension Reason


For image rotation in the pictures app


For working with arbitrary-length integers

For Server Performance

For enhanced server performance consider installing one of the following cache extensions:

See Caching Configuration to learn how to select and configure Memcache.

For Preview Generation

For Command Line Processing

Extension Reason


Enables command interruption by pressing ctrl-c

You don’t need the WebDAV module for your Web server (i.e., Apache’s mod_webdav), as ownCloud has a built-in WebDAV server of its own, SabreDAV. If mod_webdav is enabled you must disable it for ownCloud. See the Apache Web Server configuration for an example configuration.

For MySQL/MariaDB

The InnoDB storage engine is required, and MyISAM is not supported, see MySQL / MariaDB storage engine for more information.