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Blog Extractor travis-badge

Warning!

This has had limited testing so far and there may be bugs. Would love feedback from those willing to test this out. There should be no risk to the multisite. In fact, no changes are made to the multisite. But, you know, gremlins.

Installation

As Package

This is the easiest. It will also make the command available anywhere wp is.

wp package install trepmal/blog-extractor

As Standard Plugin

You can also install this command as a standard WordPress plugin, however that means the command will only be available for that WordPress installation where the plugin is active.

wp plugin install https://github.com/trepmal/blog-extractor/archive/master.zip --activate-network

Usage

Extract a single blog from a multisite network. (Does not delete original site)

wp extract <id>

Creates an tar file in the WordPress root directory. Tar file contains:

  • sql dump of site, including user tables
  • wp-content/
  • uploads/sites/{id}
  • plugins/{active-plugins}
  • plugins/{network-activated plugins} (will need to be reactivated)
  • mu-plugins
  • themes/{active theme} (including parent if needed)
  • dropins (such as object-cache.php)

In setting up the standalone site, a few things need to be done:

  • in wp-config.php change the $table_prefix to match the ID'd prefix from the multisite (this is given in the success message)
  • after the tables are imported
  • run the search-replace command to change the URLs
  • move the uploads from the /sites/{id}/ directory to the main /uploads/ folder
  • run search-replace again to change those affected URLs

Example, if you run

$ wp extract 100

You'd get something like

> Success: archive-100.tar.gz created! (1.33 MB)
> In your new install in wp-config.php, set the $table_prefix to wp_100_
> You'll also need to do a search-replace for the url change
> =========================================
> # update URLs
> wp search-replace ms.dev/montana NEWURL
> # move the uploads to the typical directory
> mv wp-content/uploads/sites/100/* wp-content/uploads/
> # remove the old directory
> rm -rf wp-content/uploads/sites/
> # update database
> wp search-replace wp-content/uploads/sites/100/ wp-content/uploads/
> =========================================