Force logout all users from a Drupal 8 site
- drupal 8 log everyone out
- drupal 8 log out all users
drush sqlc
TRUNCATE sessions;
Is still the way. After truncating the sessions table, people are logged out.
To more thoroughly (Drupal hooks called) log out one user at a time, see https://www.drupal.org/node/3008131
- drupal 8 prevent login on one domain, allow on another