Adventskalender Day 19 – „One Installation to rule them all“ – Multisite and Multi-Client in WordPress

Multisite [‘mʌltisaɪt;] is an environment, which consists of several technical closely connected websites. WordPress is already offering the possibility to manage your network with WordPress in standard.

The advantages of a WordPress Multisite setup are clear to see. Several independent or related blogs can be operated by one WordPress installation, through which the maintenance costs are greatly reduced; Synergies between WordPress items can be used to portray multilingual sites, for example.

Here are some applied examples:

  • is probably one of the biggest WordPress Multisite installations. – is one of the biggest Multisite installations. is one of the biggest Multisite installations.
  • Universities, schools and other education establishments are a further area of application for a WordPress Multisite. Therefore large amounts of content are often produced, which are divided into several segments (Colleges subject areas, etc.) The University of Maine uses WordPress Multisite to network and organise the various subject areas. Teachers and pupils can create their own blogs and can exchange information so quickly and easily.
    The University of Maine
    The University of Maine
  • The Local news service in the German speaking world, with more than 2000 instances, is probably one of the biggest WordPress Multisite installations. This site was build by our agency Inpsyde.
    Germany’s biggest Multisite Installation.
    Germany’s biggest Multisite Installation.
  • Multi-lingual websites can be implemented with the WordPress Multisite installation, in this way a number of supported languages are available. For this kind of application there is among others the Plugin MultilingualPress, which uses the Multisite functionality for displaying several languages.

Set up WordPress Multisite.

We are coming to the interesting part, the installation, which takes no longer than the famous 5 Minutes WordPress Installation.

  • Stage 1: Preparation
    First of all, a standard version of WordPress must be installed. Subsequently, the standard Permalink Structure ?p=1 must be changed to a readable format “’’/Hello-world’’’’
  • Stage 2: Allow the Multisite
    In the wp-config.php the terms WP_ALLOW_MULTISITE must be entered.
  • Stage 3: Install the Multisite
    After entering wp-config.php WordPress creates a backend of tools and a new menu option “Network settings” is available. The fundamental configurations for WordPress Multisite are determined on this page. Firstly, you can choose between sub-domains and sub-directories. Lastly, the network can be assigned a title under “Network details”.
    After clicking on “install now” new data tables are created with the format prefix_1_tabellenname and this leads on the next stage.
    Install WordPress Multisite
    Install WordPress Multisite
  • Stage 4: Setting up the Multisite
    At the last stage, WordPress displays the generated configurations, which must be entered in the wp-config.php und der .htaccess fields.
    Setting up Multisite
    Setting up Multisite

After all has been correctly entered; you are prompted to log in once again at WordPress. From now, there is a WordPress backend with the menu option “my blogs”. Under this you will find a list of existing blogs and the “network administrator”.

New Multisite menu option
New Multisite menu option


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Hi ich bin ausgebildeter Mediengestalter für Digital- & Printmedien, mit mehr als nur ein Gefühl für Formen, Farben und Komposition. Ich bin Vater, Ehemann, Webentwickler, Webdesigner, Berater, Ausbilder, Mitglied in der IHK Prüfkommission für Mediengestalter, Fotograf und I ♥ WordPress.

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  1. #1

    I tried to do step two of this instructional but I got the white screen of death.

    I have the readable permalink structure and I copied and pasted the code using a standard code editor. Do I need to add it to a particular line or do I need to add it before or after something else?

  2. #3

    Thank you sooo much!
    With this tutorial I felt so smart while doing all these 😉

  3. #4

    Thank you. I have a serious problem thought! I had an already running page and after installing your plugin I cannot add any more content! All fields and translation boxes appear but after adding the content when I hit save it just takes me to the posts page and nothing is saved, just the original post remains, as before installing your plugin. Can you tell me what could be wrong?

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