I haven't been able to use the databases on Tools labs as user tools.citationhunt for a few weeks now:
tools.citationhunt@tools-bastion-01:~$ sql enwiki_p 'select 1;'
ERROR 1045 (28000): Access denied for user 's52481'@'10.68.17.228' (using password: YES)
I've also reproduced the issue with dewiki and trwiki. My user account (ggp) is still capable of accessing the databases, though.