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Multisite for Elgg

What is it?

MP Multisite for Elgg allows you to run multiple separate Elgg sites off of the same install of the codebase, saving disk space and making administration a whole bunch easier.

Once installed, adding new Elgg sites is a matter of clicking on a button and entering in some details.

What can I do with it?

You can do everything that you can do with Elgg, but with the ability to create new networks on demand. This will for example let you:

  • Set up your own version of Ning or Buddypress
  • In your organisation or institution, easily set up Elgg sites for each department.
  • ... etc...


The basic concept is that you set up one PRIVATE domain/site on your apache host that has /multisite/ as its docroot, then set up a PUBLIC wildcard domain which has /elgg/ as its docroot.

If you want an example of how to set it up, take a look at the configuration of the vagrant build.

Basic Setup

  • Create a database and install multisite/schema/multisite_mysql.sql
  • Create a database user with
    • The ability to create databases
    • The ability to grant privileges on those databases
  • Modify the $CONFIG->multisite->db_* configuration in elgg/elgg-config/settings.php with these database settings
  • Configure a PRIVATE domain to use /multisite/ as a docroot
  • Configure a PUBLIC wildcard domain to use /elgg/ docroot
  • Make sure /data/ is writable by your webserver
  • Visit your private domain & set up your first user and user domains

Console tool

You can also perform basic domain management from the console tool. Log on to your server and use:


To see a list of commands you can execute.

Vagrant build

If you want to start playing with this quickly, you can run the vagrant build.

  • Install vagrant
  • Modify your hosts file (/etc/hosts on linux)
    • Set "elgg-multisite" to point to the IP in your Vagrantfile ( by default)
    • Set "whatever.multi", "whatever2.multi", etc... to point to the same
  • Make sure /data/ is writable by your webserver
  • vagrant up
  • Go to http://elgg-multisite and set up your admin user
    • Log in admin
    • Create your whatever.multi domain
  • Visit http://whatever.multi

Note: Provisioning will destroy any existing management database, so careful if you're re-provisioning an existing box!

Licence and Copyright

Elgg Multisite is (C) 2010-18 Marcus Povey All Rights Reserved

Released under GPLv2 (See LICENCE.txt)

Elgg Multisite includes


Manage multiple Elgg social networks using a single install




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