Extension:DataDump

MediaWiki extensions manual

DataDump Release status: stable
Implementation	Database , Special page
Description	Provides the Special page to generate/delete/download dumps
Author(s)	Paladox, Universal Omega
Maintainer(s)	Miraheze system administrators
Latest version	continuous updates
MediaWiki	>= 1.43.0
PHP	7.4+
Database changes	Yes
Composer	miraheze/data-dump
Tables	data_dump
License	GNU General Public License 3.0 or later
Download	GitHub: project page git repository URL [help ] commit history Note: No localisation updates are provided by translatewiki.net .
Parameters $wgDataDumpDisableGenerate $wgDataDumpLimits $wgDataDumpDirectory $wgDataDumpFileBackend $wgDataDump
Added rights generate-dump delete-dump view-dump
Hooks used LoadExtensionSchemaUpdates

DataDump allows users to request and generate database dumps. Other types of dumps, such as image dumps, can be configured in the extension. This allows for easy dumping without the need for system administrator intervention.

For reporting an issue or a bug, please use Miraheze Phabricator. See here for the workboard.

Installation

• Download and place the file(s) in a directory called DataDump in your extensions/ folder.
• Add the following code at the bottom of your LocalSettings.php file:

  wfLoadExtension( 'DataDump' );
  

• Run the update script which will automatically create the necessary database tables that this extension needs.
• Configure as required.
• Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Configuration

parameter	default	comment
$wgDataDump	[]	This config defines how dumps are generated and which types of dumps there are.
$wgDataDumpDirectory	false	This config defines the directory where to store the dumps.
$wgDataDumpDisableGenerate	false	This config determines whether DataDump should be disabled or not.
$wgDataDumpFileBackend	false	This config defines backend to use ($wgFileBackends)
$wgDataDumpInfo	""	This config defines the information displayed atop Special:DataDump.
$wgDataDumpLimits	["memory": 0, "filesize": 0, "time": 0, "walltime": 0]	This config defines resources allocated to running scripts.

Permissions

DataDump provides three permissions. These allow you some granularity when it comes to configuring DataDump.

You are not restricted to only using these permissions to restrict who can download, view, or delete dumps. You can also use other permissions available on the wiki.

parameter	comment
generate-dump	Allows users to generate database dumps
view-dump	Allows users to view dumps
delete-dump	Allows users to delete dumps

Example

This is an example of how to set up the configuration. You can tailor it to your specific needs:

$wgDataDumpDirectory = "/var/backups/${wgDBname}/";

$wgDataDump = [
    'xml' => [
        'file_ending' => '.xml.gz',
        'generate' => [
            'type' => 'mwscript',
            'script' => "$IP/maintenance/dumpBackup.php",
            'options' => [
                '--full',
                '--output',
                "gzip:${wgDataDumpDirectory}" . '${filename}',
            ],
        ],
        'limit' => 1,
        'permissions' => [
            'view' => 'view-dump',
            'generate' => 'generate-dump',
            'delete' => 'delete-dump',
        ],
    ],
    'zip' => [
        'file_ending' => '.zip',
        'generate' => [
            'type' => 'script',
            'script' => '/usr/bin/zip',
            'options' => [
                '-r',
                "${wgDataDumpDirectory}" . '${filename}',
                "$IP/images/"
            ],
        ],
        'limit' => 1,
        'permissions' => [
            'view' => 'view-dump',
            'generate' => 'generate-dump',
            'delete' => 'delete-dump',
        ],
    ],
];

Note that ${filename} is replaced internally in the extension so make sure that it is always in a single string not in a double string.

The limit parameter specifies how many dumps can be generated for that wiki.

Troubleshooting

If you're experiencing issues with failed data dumps, you can look at your Job Queue 's log file. You can search for DataDumpGenerateJob to find an area where the Job Queue is running your dump.

PHP binary location

If your log file contains something similar: [exec] Possibly missing executable file: '/usr/bin/php', then you might need to set $wgPhpCli to a correct value for your environment. You can use whereis php to double check.

Zip Tooling

If your log file contains something similar to: [exec] Possibly missing executable file: '/usr/bin/zip' then you need to ensure the appropriate zip tooling for your job is installed on your Host machine.

See also

• Manual:Backing up a wiki
• Extension:DumpsOnDemand