config.sample.php

<?php

/**
 * This configuration file is only provided to document the different
 * configuration options and their usage for the core system.
 *
 * DO NOT COMPLETELY BASE YOUR CONFIGURATION FILE ON THIS SAMPLE. THIS MAY BREAK
 * YOUR INSTANCE. Instead, manually copy configuration switches that you
 * consider important for your instance to your working `config.php`, and
 * apply configuration options that are pertinent for your instance.
 *
 * This file is used to generate the configuration documentation.
 * Please consider following requirements of the current parser:
 *  * all comments need to start with `/**` and end with ` *\/` - each on their
 *    own line
 *  * add a `@see CONFIG_INDEX` to copy a previously described config option
 *    also to this line
 *  * everything between the `*\/` and the next `/**` will be treated as the
 *    config option
 *  * use RST syntax
 */

$CONFIG = array(


/**
 * Default Parameters
 *
 * These parameters are configured by the ownCloud installer, and are required
 * for your ownCloud server to operate.
 */


/**
 * This is a unique identifier for your ownCloud installation, created
 * automatically by the installer. This example is for documentation only,
 * and you should never use it because it will not work. A valid `instanceid`
 * is created when you install ownCloud. Needs to start with a letter.
 *
 * 'instanceid' => 'd3c944a9a',
 */
'instanceid' => '',

 /**
  * The salt used to hash all passwords, auto-generated by the ownCloud
  * installer. (There are also per-user salts.) If you lose this salt you lose
  * all your passwords. This example is for documentation only, and you should
  * never use it.
  *
  * @deprecated This salt is deprecated and only used for legacy-compatibility,
  * developers should *NOT* use this value for anything nowadays.
  *
  * 'passwordsalt' => 'd3c944a9af095aa08f',
 */
'passwordsalt' => '',

/**
 * Your list of trusted domains that users can log into. Specifying trusted
 * domains prevents host header poisoning. Do not remove this, as it performs
 * necessary security checks. Please consider that for backend processes like 
 * background jobs or occ commands, the url parameter in key `overwrite.cli.url`
 * is used. For more details please see that key.
 */
'trusted_domains' =>
  array (
    'demo.example.org',
    'otherdomain.example.org',
  ),

/**
 * The global list of CORS domains. All users can use tools running CORS
 * requests from the listed domains.
 */
'cors.allowed-domains' => [
	'https://foo.example.org',
],

/**
 * Where user files are stored; this defaults to `data/` in the ownCloud
 * directory. The SQLite database is also stored here, when you use SQLite.
 * (SQLite is not available in ownCloud Enterprise Edition)
 */
'datadirectory' => '/var/www/owncloud/data',

/**
 * The current version number of your ownCloud installation. This is set up
 * during installation and update, so you shouldn't need to change it.
 */
'version' => '',

/**
 * While hardening an ownCloud instance hiding the version information in status.php
 * can be a legitimate step. Please consult the documentation before enabling this.
 */
'version.hide' => false,

/**
 * Optionally, show the hostname of the server in status.php. Defaults to hidden
 */
'show_server_hostname' => false,

/**
 * Optionally, use the short hostname in the status.php.
 * Defaults to use the gethostname() return value.
 */
'use_relative_domain_name' => false,

/**
 * Identifies the database used with this installation. See also config option
 * `supportedDatabases`
 *
 * Available:
 * 	- sqlite (SQLite3 - Not in Enterprise Edition)
 * 	- mysql (MySQL/MariaDB)
 * 	- pgsql (PostgreSQL)
 * 	- oci (Oracle - Enterprise Edition Only)
 */
'dbtype' => 'sqlite',

/**
 * Your host server name, for example `localhost`, `hostname`,
 * `hostname.example.com`, or the IP address. To specify a port use
 * `hostname:####`; to specify a Unix socket use
 * `localhost:/path/to/socket`.
 */
'dbhost' => '',

/**
 * The name of the ownCloud database, which is set during installation. You
 * should not need to change this.
 */
'dbname' => 'owncloud',

/**
 * The user that ownCloud uses to write to the database. This must be unique
 * across ownCloud instances using the same SQL database. This is set up during
 * installation, so you shouldn't need to change it.
 */
'dbuser' => '',

/**
 * The password for the database user. This is set up during installation, so
 * you shouldn't need to change it.
 */
'dbpassword' => '',

/**
 * Prefix for the ownCloud tables in the database.
 */
'dbtableprefix' => '',


/**
 * Indicates whether the ownCloud instance was installed successfully; `true`
 * indicates a successful installation, and `false` indicates an unsuccessful
 * installation.
 */
'installed' => false,


/**
 * User Experience
 *
 * These optional parameters control some aspects of the user interface. Default
 * values, where present, are shown.
 */

/**
 * This sets the default language on your ownCloud server, using ISO_639-1
 * language codes such as `en` for English, `de` for German, and `fr` for
 * French. It overrides automatic language detection on public pages like login
 * or shared items. User's language preferences configured under "personal ->
 * language" override this setting after they have logged in.
 */
'default_language' => 'en_GB',

/**
 * Set the default app to open on login. Use the app names as they appear in the
 * URL after clicking them in the Apps menu, such as documents, calendar, and
 * gallery. You can use a comma-separated list of app names, so if the first
 * app is not enabled for a user then ownCloud will try the second one, and so
 * on. If no enabled apps are found it defaults to the Files app.
 */
'defaultapp' => 'files',

/**
 * `true` enables the Help menu item in the user menu (top right of the
 * ownCloud Web interface). `false` removes the help item.
 */
'knowledgebaseenabled' => true,

/**
 * `true` enables avatars, or user profile photos. These appear on the User
 * page, on user's Personal pages and are used by some apps (contacts, mail,
 * etc). `false` disables them.
 */
'enable_avatars' => true,

/**
 * `true` allows users to change their display names (on their Personal
 * pages), and `false` prevents them from changing their display names.
 */
'allow_user_to_change_display_name' => true,

/**
 * Lifetime of the remember login cookie, which is set when the user clicks the
 * `remember` checkbox on the login screen. The default is 15 days, expressed
 * in seconds.
 */
'remember_login_cookie_lifetime' => 60*60*24*15,

/**
 * The lifetime of a session after inactivity; the default is 24 hours,
 * expressed in seconds.
 */
'session_lifetime' => 60 * 60 * 24,

/**
 * Enable or disable session keep-alive when a user is logged in to the Web UI.
 * Enabling this sends a "heartbeat" to the server to keep it from timing out.
 */
'session_keepalive' => true,

/**
 * Enforces token only authentication for apps and clients connecting to ownCloud. 
 * If enabled, all access requests using the users password are blocked for enhanced security. 
 * Users have to generate special app-passwords (tokens) for their apps or clients in their personal 
 * settings which are further used for app or client authentication. Browser logon is not affected. 
 */
'token_auth_enforced' => false,

/**
 * Allows to specify additional login buttons on the logon screen for e.g. SSO integration
 *  'login.alternatives' => [
 *    ['href' => 'https://www.testshib.org/Shibboleth.sso/ProtectNetwork?target=https%3A%2F%2Fmy.owncloud.tld%2Flogin%2Fsso-saml%2F', 'name' => 'ProtectNetwork', 'img' => '/img/PN_sign-in.gif'],
 *    ['href' => 'https://www.testshib.org/Shibboleth.sso/OpenIdP.org?target=https%3A%2F%2Fmy.owncloud.tld%2Flogin%2Fsso-saml%2F', 'name' => 'OpenIdP.org', 'img' => '/img/openidp.png'],
 *  ]
 */
'login.alternatives' => [],

/**
 * Disable ownCloud's built-in CSRF protection mechanism.
 *
 * In some specific setups CSRF protection is handled in the environment, e.g.,
 * running F5 ASM. In these cases the built-in mechanism is not needed and can be disabled.
 * Generally speaking, however, this config switch should be left unchanged.
 *
 * WARNING: leave this as is if you're not sure what it does
 */
'csrf.disabled' => false,

/**
 * The directory where the skeleton files are located. These files will be
 * copied to the data directory of new users. Leave empty to not copy any
 * skeleton files.
 */
'skeletondirectory' => '/path/to/owncloud/core/skeleton',

/**
 * The `user_backends` app (which needs to be enabled first) allows you to
 * configure alternate authentication backends. Supported backends are:
 * IMAP (OC_User_IMAP), SMB (OC_User_SMB), and FTP (OC_User_FTP).
 */
'user_backends' => array(
	array(
		'class' => 'OC_User_IMAP',
		'arguments' => array('{imap.gmail.com:993/imap/ssl}INBOX')
	)
),

/**
 * If your user backend does not allow password resets (e.g. when it's a read-only
 * user backend like LDAP), you can specify a custom link, where the user is
 * redirected to, when clicking the "reset password" link after a failed login-attempt.
 * In case you do not want to provide any link, replace the url with 'disabled'
 */
'lost_password_link' => 'https://example.org/link/to/password/reset',

/**
 * Allow medial search on account properties like display name, user id, email,
 * and other search terms. Allows finding 'Alice' when searching for 'lic'.
 * May slow down user search. Disable this if you encounter slow username search
 * in the sharing dialog.
 */
'accounts.enable_medial_search' => true,

/**
 * Allow medial search on the group id. Allows finding 'test' when searching for 'es'.
 * This is only used in the DB group backend (local groups), and won't be used against LDAP
 * Shibboleth or any other group backend.
 */
'groups.enable_medial_search' => true,

/**
 * Defines the minimum characters entered before a search returns results for 
 * users or groups in the share autocomplete form. Lower values increase search
 * time especially for large backends.
 * Any exact matches to a user or group will be returned, even though less than 
 * the minimum characters have been entered. The search is case insensitive.
 * e.g. entering "tom" will always return "Tom" if there is an exact match.
 */
'user.search_min_length' => 2,

/**
 * Mail Parameters
 *
 * These configure the email settings for ownCloud notifications and password resets.
 */

/**
 * The return address that you want to appear on emails sent by the ownCloud server,
 * for example `oc-admin@example.com`, substituting your own domain, of course.
 */
'mail_domain' => 'example.com',

/**
 * FROM address that overrides the built-in `sharing-noreply` and
 * `lostpassword-noreply` FROM addresses.
 */
'mail_from_address' => 'owncloud',

/**
 * Enable SMTP class debugging.
 */
'mail_smtpdebug' => false,

/**
 * Which mode to use for sending mail: `sendmail`, `smtp`, `qmail` or `php`.
 *
 * If you are using local or remote SMTP, set this to `smtp`.
 *
 * If you are using PHP mail you must have an installed and working email system
 * on the server. The program used to send email is defined in the `php.ini` file.
 *
 * For the `sendmail` option you need an installed and working email system on
 * the server, with `/usr/sbin/sendmail` installed on your Unix system.
 *
 * For `qmail` the binary is /var/qmail/bin/sendmail, and it must be installed
 * on your Unix system.
 */
'mail_smtpmode' => 'sendmail',

/**
 * This depends on `mail_smtpmode`. Specify the IP address of your mail
 * server host. This may contain multiple hosts separated by a semi-colon. If
 * you need to specify the port number append it to the IP address separated by
 * a colon, like this: `127.0.0.1:24`.
 */
'mail_smtphost' => '127.0.0.1',

/**
 * This depends on `mail_smtpmode`. Specify the port for sending mail.
 */
'mail_smtpport' => 25,

/**
 * This depends on `mail_smtpmode`. This sets the SMTP server timeout, in seconds. 
 * You may need to increase this if you are running an anti-malware or spam scanner.
 */
'mail_smtptimeout' => 10,

/**
 * This depends on `mail_smtpmode`. Specify when you are using `ssl` or
 * `tls`, or leave empty for no encryption.
 */
'mail_smtpsecure' => '',

/**
 * This depends on `mail_smtpmode`. Change this to `true` if your mail
 * server requires authentication.
 */
'mail_smtpauth' => false,

/**
 * This depends on `mail_smtpmode`. If SMTP authentication is required, choose
 * the authentication type as `LOGIN` (default) or `PLAIN`.
 */
'mail_smtpauthtype' => 'LOGIN',

/**
 * This depends on `mail_smtpauth`. Specify the username for authenticating to
 * the SMTP server.
 */
'mail_smtpname' => '',

/**
 * This depends on `mail_smtpauth`. Specify the password for authenticating to
 * the SMTP server.
 */
'mail_smtppassword' => '',


/**
 * Proxy Configurations
 */

/**
 * The automatic hostname detection of ownCloud can fail in certain reverse
 * proxy and CLI/cron situations. This option allows you to manually override
 * the automatic detection; for example `www.example.com`, or specify the port
 * `www.example.com:8080`.
 */
'overwritehost' => '',

/**
 * When generating URLs, ownCloud attempts to detect whether the server is
 * accessed via `https` or `http`. However, if ownCloud is behind a proxy
 * and the proxy handles the `https` calls, ownCloud would not know that
 * `ssl` is in use, which would result in incorrect URLs being generated.
 * Valid values are `http` and `https`.
 */
'overwriteprotocol' => '',

/**
 * ownCloud attempts to detect the webroot for generating URLs automatically.
 * For example, if `www.example.com/owncloud` is the URL pointing to the
 * ownCloud instance, the webroot is `/owncloud`. When proxies are in use, it
 * may be difficult for ownCloud to detect this parameter, resulting in invalid
 * URLs.
 */
'overwritewebroot' => '',

/**
 * This option allows you to define a manual override condition as a regular
 * expression for the remote IP address. The keys `overwritewebroot`,
 * `overwriteprotocol`, and `overwritehost` are subject to this condition.
 * For example, defining a range of IP  addresses starting with `10.0.0.`
 * and ending with 1 to 3: * `^10\.0\.0\.[1-3]$`
 */
'overwritecondaddr' => '',

/**
 * Use this configuration parameter to specify the base URL for any URLs which
 * are generated within ownCloud using any kind of command line tools (cron or
 * occ). The value should contain the full base URL:
 * `https://www.example.com/owncloud`
 * As an example, alerts shown in the browser to upgrade an app are triggered by
 * a cron background process and therefore uses the url of this key, even if the user
 * has logged on via a different domain defined in key `trusted_domains`. When the 
 * user clicks an alert like this, he will be redirected to that URL and must logon again.
 */
'overwrite.cli.url' => '',

/**
 * To have clean URLs without `/index.php` this parameter needs to be configured.
 *
 * This parameter will be written as `RewriteBase` on update and installation of
 * ownCloud to your `.htaccess` file. While this value is often simply the URL
 * path of the ownCloud installation it cannot be set automatically properly in
 * every scenario and needs thus some manual configuration.
 *
 * In a standard Apache setup this usually equals the folder that ownCloud is
 * accessible at. So if ownCloud is accessible via `https://mycloud.org/owncloud`
 * the correct value would most likely be `/owncloud`. If ownCloud is running
 * under `https://mycloud.org/` then it would be `/`.
 *
 * Note that the above rule is not valid in every case, as there are some rare setup
 * cases where this may not apply. However, to avoid any update problems this
 * configuration value is explicitly opt-in.
 *
 * After setting this value run `occ maintenance:update:htaccess`. Now, when the
 * following conditions are met ownCloud URLs won't contain `index.php`:
 *
 * - `mod_rewrite` is installed
 * - `mod_env` is installed
 */
'htaccess.RewriteBase' => '/',

/**
 * The URL of your proxy server, for example `proxy.example.com:8081`.
 */
'proxy' => '',

/**
 * The optional authentication for the proxy to use to connect to the internet.
 * The format is: `username:password`.
 */
'proxyuserpwd' => '',


/**
 * Deleted Items (trash bin)
 *
 * These parameters control the Deleted files app.
 */

/**
 * If the trash bin app is enabled (default), this setting defines the policy
 * for when files and folders in the trash bin will be permanently deleted.
 * The app allows for two settings, a minimum time for trash bin retention,
 * and a maximum time for trash bin retention.
 * Minimum time is the number of days a file will be kept, after which it
 * may be deleted. Maximum time is the number of days at which it is guaranteed
 * to be deleted.
 * Both minimum and maximum times can be set together to explicitly define
 * file and folder deletion. For migration purposes, this setting is installed
 * initially set to `auto`, which is equivalent to the default setting in
 * ownCloud 8.1 and before.
 *
 * Available values:
 *
 * * `auto`
 *     default setting. Keeps files and folders in the deleted files for up to
 *     30 days, automatically deleting them (at any time) if space is needed.
 *     Note: files may not be removed if space is not required.
 * * `D, auto`
 *     keeps files and folders in the trash bin for D+ days, delete anytime if
 *     space needed (note: files may not be deleted if space is not needed)
 * * `auto, D`
 *     delete all files in the trash bin that are older than D days
 *     automatically, delete other files anytime if space needed
 * * `D1, D2`
 *     keep files and folders in the trash bin for at least D1 days and
 *     delete when exceeds D2 days
 * * `disabled`
 *     trash bin auto clean disabled, files and folders will be kept forever
 */
'trashbin_retention_obligation' => 'auto',

/**
 * This setting defines percentage of free space occupied by deleted files
 * that triggers auto purging of deleted files for this user
 */
'trashbin_purge_limit' => 50,

/**
 * File versions
 *
 * These parameters control the Versions app.
 */

/**
 * If the versions app is enabled (default), this setting defines the policy
 * for when versions will be permanently deleted.
 * The app allows for two settings, a minimum time for version retention,
 * and a maximum time for version retention.
 * Minimum time is the number of days a version will be kept, after which it
 * may be deleted. Maximum time is the number of days at which it is guaranteed
 * to be deleted.
 * Both minimum and maximum times can be set together to explicitly define
 * version deletion. For migration purposes, this setting is installed
 * initially set to "auto", which is equivalent to the default setting in
 * ownCloud 8.1 and before.
 *
 * Available values:
 *
 * * `auto`
 *     default setting. Automatically expire versions according to expire
 *     rules. Please refer to :doc:`../configuration/files/file_versioning` for
 *     more information.
 * * `D, auto`
 *     keep versions at least for D days, apply expire rules to all versions
 *     that are older than D days
 * * `auto, D`
 *     delete all versions that are older than D days automatically, delete
 *     other versions according to expire rules
 * * `D1, D2`
 *     keep versions for at least D1 days and delete when exceeds D2 days
 * * `disabled`
 *     versions auto clean disabled, versions will be kept forever
 */
'versions_retention_obligation' => 'auto',

/**
 * ownCloud Verifications
 *
 * ownCloud performs several verification checks. There are two options,
 * `true` and `false`.
 */

/**
 * Check if ownCloud is up-to-date and shows a notification if a new version is
 * available. This option is only applicable to ownCloud core. It is not
 * applicable to app updates.
 */
'updatechecker' => true,

/**
 * URL that ownCloud should use to look for updates
 */
'updater.server.url' => 'https://updates.owncloud.com/server/',

/**
 * Is ownCloud connected to the Internet or running in a closed network?
 */
'has_internet_connection' => true,

/**
 * Allows ownCloud to verify a working .well-known URL redirects. This is done
 * by attempting to make a request from JS to
 * https://your-domain.com/.well-known/caldav/
 */
'check_for_working_wellknown_setup' => true,

/**
 * In certain environments it is desired to have a read-only configuration file.
 * When this switch is set to `true` ownCloud will not verify whether the
 * configuration is writable. However, it will not be possible to configure
 * all options via the Web interface. Furthermore, when updating ownCloud
 * it is required to make the configuration file writable again for the update
 * process.
 */
'config_is_read_only' => false,

/**
 * This defines the mode of operations. The default value is 'single-instance'
 * which means that ownCloud is running on a single node, which might be the
 * most common operations mode. The only other possible value for now is
 * 'clustered-instance' which means that ownCloud is running on at least 2
 * nodes. The mode of operations has various impact on the behavior of ownCloud.
 */
'operation.mode' => 'single-instance',

/**
 * Logging
 * 
 * These parameters configure the logging options.
 * For additional information or advanced configuration, please see the logging 
 * section in the documentation.
 * 
 */

/**
 * By default the ownCloud logs are sent to the `owncloud.log` file in the
 * default ownCloud data directory.
 * If syslogging is desired, set this parameter to `syslog`.
 * Setting this parameter to `errorlog` will use the PHP error_log function
 * for logging.
 */
'log_type' => 'owncloud',

/**
 * Log file path for the ownCloud logging type.
 * Defaults to `[datadirectory]/owncloud.log`
 */
'logfile' => '/var/log/owncloud.log',

/**
 * Loglevel to start logging at. Valid values are: 0 = Debug, 1 = Info, 2 =
 * Warning, 3 = Error, and 4 = Fatal. The default value is Warning.
 */
'loglevel' => 2,

/**
 * If you maintain different instances and aggregate the logs, you may want
 * to distinguish between them. `syslog_tag` can be set per instance
 * with a unique id. Only available if `log_type` is set to `syslog`.
 * The default value is `ownCloud`.
 */
'syslog_tag' => 'ownCloud',

/**
 * The syslog format can be changed to remove or add information.
 * In addition to the %replacements% below %level% can be used, but it is used
 * as a dedicated parameter to the syslog logging facility anyway.
 */
'log.syslog.format' => '[%reqId%][%remoteAddr%][%user%][%app%][%method%][%url%] %message%',

/**
 * Log condition for log level increase based on conditions. Once one of these
 * conditions is met, the required log level is set to debug. This allows to
 * debug specific requests, users or apps
 *
 * Supported conditions:
 *  - `shared_secret`: If a request parameter with the name `log_secret` is set to
 *                     this value the condition is met
 *  - `users`:         If the current request is done by one of the specified users,
 *                     this condition is met
 *  - `apps`:          If the log message is invoked by one of the specified apps,
 *                     this condition is met
 *  - `logfile`:       The log message invoked by the specified apps get redirected to
 *		               this logfile, this condition is met
 *		               Note: Not applicable when using syslog.
 *
 * Defaults to an empty array.
 */
'log.conditions' => [
        [
		'shared_secret' => '57b58edb6637fe3059b3595cf9c41b9',
		'users' => ['user1'],
		'apps' => ['files_texteditor'],
		'logfile' => '/tmp/test.log'
        ],
        [
		'shared_secret' => '57b58edb6637fe3059b3595cf9c41b9',
		'users' => ['user1'],
		'apps' => ['gallery'],
		'logfile' => '/tmp/gallery.log'
        ],
],

/**
 * This uses PHP.date formatting; see http://php.net/manual/en/function.date.php
 */
'logdateformat' => 'F d, Y H:i:s',

/**
 * The default timezone for logfiles is UTC. You may change this; see
 * http://php.net/manual/en/timezones.php
 */
'logtimezone' => 'Europe/Berlin',

/**
 * Log successful cron runs.
 */
'cron_log' => true,

/**
 * Enables log rotation and limits the total size of the logfiles. 
 * The default is 0 or false which disables log rotation. 
 * Specify a size in bytes, for example 104857600 
 * (100 megabytes = 100 * 1024 * 1024 bytes). 
 * A new logfile is created with a new name when the old logfile reaches the defined limit. 
 * If a rotated log file is already present, it will be overwritten.
 * If enabled, only the active log file and one rotated file are stored.
 */
'log_rotate_size' => false,


/**
 * Alternate Code Locations
 *
 * Some of the ownCloud code may be stored in alternate locations.
 */


/**
 * If you want to store apps in a custom directory instead of ownCloud’s default 
 * `/apps`, you need to modify the `apps_paths` key. There, you need to add a 
 * new associative array that contains three elements. These are:
 *
 * - `path`      The absolute file system path to the custom app folder.
 * - `url`       The request path to that folder relative to the ownCloud web root, prefixed with /.
 * - `writable`  Whether users can install apps in that folder. After the configuration is added, 
 *               new apps will only install in a directory where writable is set to true.
 *
 * The configuration example shows how to add a second directory, called `/apps-external`.
 * Here, new apps and updates are only written to the `/apps-external` directory.
 * This eases upgrade procedures of owncloud where shipped apps are delivered to apps/ by default.
 * `OC::$SERVERROOT` points to the web root of your instance.
 * Please see the Apps Management description on how to move custom apps properly.
 */
'apps_paths' =>
    array (
      0 => 
      array (
        'path' => OC::$SERVERROOT.'/apps',
        'url' => '/apps',
        'writable' => false,
      ),
      1 => 
      array (
        'path' => OC::$SERVERROOT.'/apps-external',
        'url' => '/apps-external',
        'writable' => true,
      ),
    ),


/**
 * Previews
 *
 * ownCloud supports previews of image files, the covers of MP3 files, and text
 * files. These options control enabling and disabling previews, and thumbnail
 * size.
 */

/**
 * By default, ownCloud can generate previews for the following filetypes:
 *
 * - Image files
 * - Covers of MP3 files
 * - Text documents
 *
 * Valid values are `true`, to enable previews, or `false`, to disable previews
 */
'enable_previews' => true,

/**
 * Location of the thumbnails folder, defaults to `data/$user/thumbnails` where
 * `$user` is the current user. When specified, the format will change to
 * `$previews_path/$user` where `$previews_path` is the configured previews base directory
 * and `$user` will be substituted with the user id automatically.
 *
 * For example if `previews_path` is `/var/cache/owncloud/thumbnails` then for a logged in
 * user `user1` the thumbnail path will be `/var/cache/owncloud/thumbnails/user1`.
 */
'previews_path' => '',

/**
 * The maximum width, in pixels, of a preview. A value of `null` means there
 * is no limit.
 */
'preview_max_x' => 2048,

/**
 * The maximum height, in pixels, of a preview.
 * A value of `null` means there is no limit.
 */
'preview_max_y' => 2048,

/**
 * If a lot of small pictures are stored on the ownCloud instance and the
 * preview system generates blurry previews, you might want to consider setting
 * a maximum scale factor. By default, pictures are upscaled to 10 times the
 * original size. A value of `1` or `null` disables scaling.
 */
'preview_max_scale_factor' => 10,

/**
 * max file size for generating image previews with imagegd (default behaviour)
 * If the image is bigger, it'll try other preview generators,
 * but will most likely show the default mimetype icon
 *
 * Value represents the maximum filesize in megabytes
 * Default is 50
 * Set to -1 for no limit
 */
'preview_max_filesize_image' => 50,

/**
 * custom path for LibreOffice/OpenOffice binary
 */
'preview_libreoffice_path' => '/usr/bin/libreoffice',

/**
 * Use this if LibreOffice/OpenOffice requires additional arguments.
 */
'preview_office_cl_parameters' =>
	' --headless --nologo --nofirststartwizard --invisible --norestore '.
	'--convert-to pdf --outdir ',

/**
 * Only register providers that have been explicitly enabled
 *
 * The following providers are enabled by default:
 *
 *  - OC\Preview\PNG
 *  - OC\Preview\JPEG
 *  - OC\Preview\GIF
 *  - OC\Preview\BMP
 *  - OC\Preview\XBitmap
 *  - OC\Preview\MarkDown
 *  - OC\Preview\MP3
 *  - OC\Preview\TXT
 *
 * The following providers are disabled by default due to performance or privacy
 * concerns:
 *
 *  - OC\Preview\Illustrator
 *  - OC\Preview\Movie
 *  - OC\Preview\MSOffice2003
 *  - OC\Preview\MSOffice2007
 *  - OC\Preview\MSOfficeDoc
 *  - OC\Preview\OpenDocument
 *  - OC\Preview\PDF
 *  - OC\Preview\Photoshop
 *  - OC\Preview\Postscript
 *  - OC\Preview\StarOffice
 *  - OC\Preview\SVG
 *  - OC\Preview\TIFF
 *  - OC\Preview\Font
 *
 * .. note:: Troubleshooting steps for the MS Word previews are available
 *    at the :doc:`../configuration/files/collaborative_documents_configuration`
 *    section of the Administrators Manual.
 *
 * The following providers are not available in Microsoft Windows:
 *
 *  - OC\Preview\Movie
 *  - OC\Preview\MSOfficeDoc
 *  - OC\Preview\MSOffice2003
 *  - OC\Preview\MSOffice2007
 *  - OC\Preview\OpenDocument
 *  - OC\Preview\StarOffice
 */
'enabledPreviewProviders' => array(
	'OC\Preview\PNG',
	'OC\Preview\JPEG',
	'OC\Preview\GIF',
	'OC\Preview\BMP',
	'OC\Preview\XBitmap',
	'OC\Preview\MP3',
	'OC\Preview\TXT',
	'OC\Preview\MarkDown'
),

/**
 * Comments
 *
 * Global settings for the Comments infrastructure
 */

/**
 * Replaces the default Comments Manager Factory. This can be utilized if an
 * own or 3rdParty CommentsManager should be used that – for instance – uses the
 * filesystem instead of the database to keep the comments.
 */
'comments.managerFactory' => '\OC\Comments\ManagerFactory',

/**
 * Replaces the default System Tags Manager Factory. This can be utilized if an
 * own or 3rdParty SystemTagsManager should be used that – for instance – uses the
 * filesystem instead of the database to keep the tags.
 */
'systemtags.managerFactory' => '\OC\SystemTag\ManagerFactory',

/**
 * Maintenance
 *
 * These options are for halting user activity when you are performing server
 * maintenance.
 */

/**
 * Enable maintenance mode to disable ownCloud
 *
 * If you want to prevent users from logging in to ownCloud before you start
 * doing some maintenance work, you need to set the value of the maintenance
 * parameter to true. Please keep in mind that users who are already logged-in
 * are kicked out of ownCloud instantly.
 */
'maintenance' => false,

/**
 * When set to `true`, the ownCloud instance will be unavailable for all users
 * who are not in the `admin` group.
 */
'singleuser' => false,


/**
 * SSL
 */

/**
 * Extra SSL options to be used for configuration.
 */
'openssl' => array(
	'config' => '/absolute/location/of/openssl.cnf',
),

/**
 * Allow the configuration of system wide trusted certificates
 */
'enable_certificate_management' => false,

/**
 * Memory caching backend configuration
 *
 * Available cache backends:
 *
 * * `\OC\Memcache\APCu`       APC user backend
 * * `\OC\Memcache\ArrayCache` In-memory array-based backend (not recommended)
 * * `\OC\Memcache\Memcached`  Memcached backend
 * * `\OC\Memcache\Redis`      Redis backend
 *
 * Advice on choosing between the various backends:
 *
 * * APCu should be easiest to install. Almost all distributions have packages.
 *   Use this for single user environment for all caches.
 * * Use Redis or Memcached for distributed environments.
 *   For the local cache (you can configure two) take APCu.
 */

/**
 * Memory caching backend for locally stored data
 *
 * * Used for host-specific data, e.g. file paths
 */
'memcache.local' => '\OC\Memcache\APCu',

/**
 * Memory caching backend for distributed data
 *
 * * Used for installation-specific data, e.g. database caching
 * * If unset, defaults to the value of memcache.local
 */
'memcache.distributed' => '\OC\Memcache\Memcached',

/**
 * Connection details for redis to use for memory caching in a single server configuration.
 *
 * For enhanced security it is recommended to configure Redis to require a password.
 * See http://redis.io/topics/security for more information.
 */
'redis' => [
	'host' => 'localhost', // can also be a unix domain socket: '/tmp/redis.sock'
	'port' => 6379,
	'timeout' => 0.0,
	'password' => '', // Optional, if not defined no password will be used.
	'dbindex' => 0,   // Optional, if undefined SELECT will not run and will use Redis Server's default DB Index.
],

/**
 * Connection details for a Redis Cluster
 *
 * Only for use with Redis Clustering, for Sentinel-based setups use the single
 * server configuration above, and perform HA on the hostname.
 *
 * Redis Cluster support requires the php module phpredis in version 3.0.0 or higher.
 *
 * Available failover modes:
 *  - \RedisCluster::FAILOVER_NONE       - only send commands to master nodes (default)
 *  - \RedisCluster::FAILOVER_ERROR      - failover to slaves for read commands if master is unavailable
 *  - \RedisCluster::FAILOVER_DISTRIBUTE - randomly distribute read commands across master and slaves
 */
'redis.cluster' => [
	'seeds' => [ // provide some/all of the cluster servers to bootstrap discovery, port required
		'localhost:7000',
		'localhost:7001'
	],
	'timeout' => 0.0,
	'read_timeout' => 0.0,
	'failover_mode' => \RedisCluster::FAILOVER_DISTRIBUTE
],


/**
 * Server details for one or more memcached servers to use for memory caching.
 */
'memcached_servers' => array(
	// hostname, port and optional weight. Also see:
	// http://www.php.net/manual/en/memcached.addservers.php
	// http://www.php.net/manual/en/memcached.addserver.php
	array('localhost', 11211),
	//array('other.host.local', 11211),
),

/**
 * Connection options for memcached, see http://apprize.info/php/scaling/15.html
 */
'memcached_options' => array(
	// Set timeouts to 50ms
	\Memcached::OPT_CONNECT_TIMEOUT => 50,
	\Memcached::OPT_RETRY_TIMEOUT =>   50,
	\Memcached::OPT_SEND_TIMEOUT =>    50,
	\Memcached::OPT_RECV_TIMEOUT =>    50,
	\Memcached::OPT_POLL_TIMEOUT =>    50,

	// Enable compression
	\Memcached::OPT_COMPRESSION =>          true,

	// Turn on consistent hashing
	\Memcached::OPT_LIBKETAMA_COMPATIBLE => true,

	// Enable Binary Protocol
	\Memcached::OPT_BINARY_PROTOCOL =>      true,

	// Binary serializer will be enabled if the igbinary PECL module is available
	//\Memcached::OPT_SERIALIZER => \Memcached::SERIALIZER_IGBINARY,
),


/**
 * Location of the cache folder, defaults to `data/$user/cache` where
 * `$user` is the current user. When specified, the format will change to
 * `$cache_path/$user` where `$cache_path` is the configured cache directory
 * and `$user` is the user.
 */
'cache_path' => '',

/**
 * TTL of chunks located in the cache folder before they're removed by
 * garbage collection (in seconds). Increase this value if users have
 * issues uploading very large files via the ownCloud Client as upload isn't
 * completed within one day.
 */
'cache_chunk_gc_ttl' => 86400, // 60*60*24 = 1 day

/**
 * Location of the chunk folder, defaults to `data/$user/uploads` where
 * `$user` is the current user. When specified, the format will change to
 * `$dav.chunk_base_dir/$user` where `$dav.chunk_base_dir` is the configured
 * cache directory and `$user` is the user.
 */
'dav.chunk_base_dir' => '',

/**
 * Using Object Store with ownCloud
 */

/**
 * This example shows how to configure ownCloud to store all files in a
 * swift object storage.
 *
 * It is important to note that ownCloud in object store mode will expect
 * exclusive access to the object store container because it only stores the
 * binary data for each file. The metadata is currently kept in the local
 * database for performance reasons.
 *
 * WARNING: The current implementation is incompatible with any app that uses
 * direct file IO and circumvents our virtual filesystem. That includes
 * Encryption and Gallery. Gallery will store thumbnails directly in the
 * filesystem and encryption will cause severe overhead because key files need
 * to be fetched in addition to any requested file.
 *
 * One way to test is applying for a trystack account at http://trystack.org/
 */
'objectstore' => [
	'class' => 'OC\\Files\\ObjectStore\\Swift',
	'arguments' => [
		// trystack will use your facebook id as the user name
		'username' => 'facebook100000123456789',
		// in the trystack dashboard go to user -> settings -> API Password to
		// generate a password
		'password' => 'Secr3tPaSSWoRdt7',
		// must already exist in the objectstore, name can be different
		'container' => 'owncloud',
		// prefix to prepend to the fileid, default is 'oid:urn:'
		'objectPrefix' => 'oid:urn:',
		// create the container if it does not exist. default is false
		'autocreate' => true,
		// required, dev-/trystack defaults to 'RegionOne'
		'region' => 'RegionOne',
		// The Identity / Keystone endpoint
		'url' => 'http://8.21.28.222:5000/v2.0',
		// required on dev-/trystack
		'tenantName' => 'facebook100000123456789',
		// dev-/trystack uses swift by default, the lib defaults to 'cloudFiles'
		// if omitted
		'serviceName' => 'swift',
		// The Interface / url Type, optional
		'urlType' => 'internal'
	],
],


/**
 * Sharing
 *
 * Global settings for Sharing
 */

/**
 * Replaces the default Share Provider Factory. This can be utilized if
 * own or 3rdParty Share Providers are used that – for instance – use the
 * filesystem instead of the database to keep the share information.
 */
'sharing.managerFactory' => '\OC\Share20\ProviderFactory',

/**
 * When talking with federated sharing server, allow falling back to HTTP
 * instead of hard forcing HTTPS
 */
'sharing.federation.allowHttpFallback' => false,


/**
 * All other configuration options
 */

/**
 * Additional driver options for the database connection, eg. to enable SSL
 * encryption in MySQL or specify a custom wait timeout on a cheap hoster.
 */
'dbdriveroptions' => array(
	PDO::MYSQL_ATTR_SSL_CA => '/file/path/to/ca_cert.pem',
	PDO::MYSQL_ATTR_INIT_COMMAND => 'SET wait_timeout = 28800'
),

/**
 * sqlite3 journal mode can be specified using this configuration parameter -
 * can be 'WAL' or 'DELETE' see for more details https://www.sqlite.org/wal.html
 */
'sqlite.journal_mode' => 'DELETE',

/**
 * During setup, if requirements are met (see below), this setting is set to true
 * and MySQL can handle 4 byte characters instead of 3 byte characters.
 *
 * If you want to convert an existing 3-byte setup into a 4-byte setup please 
 * set the parameters in MySQL as mentioned below and run the migration command:
 * `sudo -u www-data php occ db:convert-mysql-charset`
 * The config setting will be set automatically after a successful run.
 * 
 * Consult the documentation for more details.
 * 
 * MySQL requires a special setup for longer indexes (> 767 bytes) which are needed:
 *
 * [source,console]
 * ....
 * [mysqld]
 * innodb_large_prefix=ON
 * innodb_file_format=Barracuda
 * innodb_file_per_table=ON
 * ....
 *
 * Tables will be created with
 *  * character set: utf8mb4
 *  * collation:     utf8mb4_bin
 *  * row_format:    compressed
 *
 * See:
 * https://dev.mysql.com/doc/refman/5.7/en/charset-unicode-utf8mb4.html
 * https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_large_prefix
 * https://mariadb.com/kb/en/mariadb/xtradbinnodb-server-system-variables/#innodb_large_prefix
 * http://www.tocker.ca/benchmarking-innodb-page-compression-performance.html
 * http://mechanics.flite.com/blog/2014/07/29/using-innodb-large-prefix-to-avoid-error-1071/
 */
'mysql.utf8mb4' => false,

/**
 * Database types that are supported for installation.
 *
 * Available:
 * 	- sqlite (SQLite3 - Not in Enterprise Edition)
 * 	- mysql (MySQL)
 * 	- pgsql (PostgreSQL)
 * 	- oci (Oracle - Enterprise Edition Only)
 */
'supportedDatabases' => array(
	'sqlite',
	'mysql',
	'pgsql',
	'oci',
),

/**
 * Override where ownCloud stores temporary files. Useful in situations where
 * the system temporary directory is on a limited space ramdisk or is otherwise
 * restricted, or if external storages which do not support streaming are in use.
 *
 * The Web server user must have write access to this directory.
 */
'tempdirectory' => '/tmp/owncloudtemp',

/**
 * The hashing cost used by hashes generated by ownCloud.
 * Using a higher value requires more time and CPU power to calculate the hashes.
 * As this number grows, the amount of work (typically CPU time or memory) necessary
 * to compute the hash increases exponentially.
 */
'hashingCost' => 10,

/**
 * Blacklist a specific file or files and disallow the upload of files
 * with this name. `.htaccess` is blocked by default.
 * WARNING: USE THIS ONLY IF YOU KNOW WHAT YOU ARE DOING.
 */
'blacklisted_files' => array('.htaccess'),

/**
 * Exclude specific directory names and disallow scanning, creating and renaming
 * using these names. Case insensitive.
 * Excluded directory names are queried at any path part like at the beginning,
 * in the middle or at the end and will not be further processed if found.
 * Please see the documentation for details and examples.
 * Use when the storage backend supports eg snapshot directories to be excluded.
 * WARNING: USE THIS ONLY IF YOU KNOW WHAT YOU ARE DOING.
 */
'excluded_directories' =>
	array (
		'.snapshot',
		'~snapshot',
	),
/**
 * Exclude files from the integrity checker command
 */
'integrity.excluded.files' =>
	array (
		'.DS_Store',
		'Thumbs.db',
		'.directory',
		'.webapp',
		'.htaccess',
		'.user.ini',
	),
/**
 * The list of apps that are allowed to have no signature.json. Besides
 * ownCloud apps, this is particularly useful when creating ownCloud themes,
 * because themes are treated as apps. The app is identified with it´s app-id. 
 * The following example allows app-1 and theme-2 to have no signature.
 */
'integrity.ignore.missing.app.signature' =>
	array(
		'app-id of app-1',
		'app-id of theme-2',
	),

/**
 * Define a default folder for shared files and folders other than root.
 */
'share_folder' => '/',

/**
 * The default cipher for encrypting files. Currently AES-128-CFB and
 * AES-256-CFB are supported.
 */
'cipher' => 'AES-256-CFB',

/**
 * The minimum ownCloud desktop client version that will be allowed to sync with
 * this server instance. All connections made from earlier clients will be denied
 * by the server. Defaults to the minimum officially supported ownCloud version at
 * the time of release of this server version.
 *
 * When changing this, note that older unsupported versions of the ownCloud desktop
 * client may not function as expected, and could lead to permanent data loss for
 * clients or other unexpected results.
 */
'minimum.supported.desktop.version' => '2.3.3',

/**
 * EXPERIMENTAL: option whether to include external storage in quota
 * calculation, defaults to false.
 */
'quota_include_external_storage' => false,

/**
 * Specifies how often the local filesystem (the ownCloud data/ directory, and
 * NFS mounts in data/) is checked for changes made outside ownCloud. This
 * does not apply to external storages.
 *
 * 0 -> Never check the filesystem for outside changes, provides a performance
 * increase when it's certain that no changes are made directly to the
 * filesystem
 *
 * 1 -> Check each file or folder at most once per request, recommended for
 * general use if outside changes might happen.
 */
'filesystem_check_changes' => 0,

/**
 * By default ownCloud will store the part files created during upload in the
 * same storage as the upload target. Setting this to false will store the part
 * files in the root of the users folder which might be required to work with certain
 * external storage setups that have limited rename capabilities.
 */
'part_file_in_storage' => true,

/**
 * Where `mount.json` file should be stored, defaults to `data/mount.json`
 * in the ownCloud directory.
 */
'mount_file' => '/var/www/owncloud/data/mount.json',

/**
 * When `true`, prevent ownCloud from changing the cache due to changes in the
 * filesystem for all storage.
 */
'filesystem_cache_readonly' => false,

/**
 * Secret used by ownCloud for various purposes, e.g. to encrypt data. If you
 * lose this string there will be data corruption.
 */
'secret' => '',

/**
 * List of trusted proxy servers
 *
 * If you configure these also consider setting `forwarded_for_headers` which
 * otherwise defaults to `HTTP_X_FORWARDED_FOR` (the `X-Forwarded-For` header).
 */
'trusted_proxies' => array('203.0.113.45', '198.51.100.128'),

/**
 * Headers that should be trusted as client IP address in combination with
 * `trusted_proxies`. If the HTTP header looks like 'X-Forwarded-For', then use
 * 'HTTP_X_FORWARDED_FOR' here.
 *
 * If set incorrectly, a client can spoof their IP address as visible to
 * ownCloud, bypassing access controls and making logs useless!
 *
 * Defaults to 'HTTP_X_FORWARDED_FOR' if unset
 */
'forwarded_for_headers' => array('HTTP_X_FORWARDED', 'HTTP_FORWARDED_FOR'),

/**
 * max file size for animating gifs on public-sharing-site.
 * If the gif is bigger, it'll show a static preview
 *
 * Value represents the maximum filesize in megabytes.
 * Default is `10`. Set to `-1` for no limit.
 */
'max_filesize_animated_gifs_public_sharing' => 10,


/**
 * Enables transactional file locking.
 * This is enabled by default.
 *
 * Prevents concurrent processes from accessing the same files
 * at the same time. Can help prevent side effects that would
 * be caused by concurrent operations. Mainly relevant for
 * very large installations with many users working with
 * shared files.
 */
'filelocking.enabled' => true,

/**
 * Set the lock's time-to-live in seconds.
 *
 * Any lock older than this will be automatically cleaned up.
 * If not set this defaults to either 1 hour or the php max_execution_time, whichever is higher.
 */
'filelocking.ttl' => 3600,

/**
 * Memory caching backend for file locking
 *
 * Because most memcache backends can clean values without warning using redis
 * is highly recommended to *avoid data loss*.
 */
'memcache.locking' => '\\OC\\Memcache\\Redis',

/**
 * Disable the web based updater
 */
'upgrade.disable-web' => false,

/**
 * Automatic update of market apps, set to "false" to disable.
 */
'upgrade.automatic-app-update' => true,

/**
 * Set this ownCloud instance to debugging mode
 *
 * Only enable this for local development and not in production environments
 * This will disable the minifier and outputs some additional debug information
 *
 * WARNING::
 *    Be warned that, if you set this to `true`, exceptions display
 *    stack traces on the web interface, *including passwords*, — **in plain text!**.
 *    We strongly encourage you never to use it in production.
 */
'debug' => false,

/**
 * Sets the data-fingerprint of the current data served
 *
 * This is a property used by the clients to find out if a backup has been
 * restored on the server. Once a backup is restored run
 * ./occ maintenance:data-fingerprint
 * To set this to a new value.
 *
 * Updating/Deleting this value can make connected clients stall until
 * the user has resolved conflicts.
 */
'data-fingerprint' => '',

/**
 * This entry is just here to show a warning in case somebody copied the sample
 * configuration. DO NOT ADD THIS SWITCH TO YOUR CONFIGURATION!
 *
 * If you, brave person, have read until here be aware that you should not
 * modify *ANY* settings in this file without reading the documentation.
 */
'copied_sample_config' => true,

/**
 * Set this property to true if you want to enable the files_external local mount Option.
 * Default: `false`
 *
 */
'files_external_allow_create_new_local' => false,

/**
 * Set this property to true if you want to enable debug logging for SMB access.
 */
'smb.logging.enable' => false, 


/**
 * Async dav extensions can be enabled or disabled.
 */
'dav.enable.async' => false,
);