Many web hosting provider are looking for HA solution for the database backend they deliver to their customers.
Galera never became the perfect choice for these environment due to 2 factors:
- no DBA really manage the databases
- Galera runs database changes in Total Order Isolation
What does that really mean ? In fact, when you are a website hosting provider, you host the website (apache, nginx) on vhosts and you share a database server in which every customer has access to their own schema for their website.
Most of the time, those websites are CMS like Drupal, WordPress or Joomla (and certainly many others sharing the same …
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