Re:Drupal Core – Highly Critical Public Service announcement
by lotyrin on Wednesday October 29, 2014 @07:44PM
(#8530615)
This requires some combo of having a support contract with a budget large enough for manual QA or having built automated tests with the initial work. Vast majority of projects at build-and-forget CMS agencies simply won't. (The reason Drupal and PHP thrive in these environments is because clients can't be upsold out of their cheap LAMP shared hosting.)
Maintain a staging environment (even in a temporary virtual machine if necessary) and run your updates in that environment first, then check it, and then deploy to production once you've confirmed everything is ok.