我有一个drupal 7网站，我创建了新的drupal 8网站。我想在Drupal 8站点中使用Drupal 7站点的登录凭据。
I have a Drupal 7 site, and I createda new Drupal 8 site. I would like to use the login credential from the Drupal 7 site in the Drupal 8 site.
How can I achieve this?
You could set up the existing Drupal 7 site as an OAuth provider and then set up the Drupal 8 site to allow for OAuth logins and then you could share credentials between the sites.
You won't get any sync for free but at least you wouldn't have to enter the password again.