(At least) the user danmichaelo (u2238) and the tools botomatik (s52307), boty (s51984), enbbsb (s51482), hasteurbot (s51307), wmve (s52526), and xxn-tools (s52403) have invalid credentials in their respective replica.my.cnfs; for example:
danmichaelo@tools-bastion-03:~$ mysql --defaults-file=replica.my.cnf -henwiki.labsdb enwiki_p ERROR 1045 (28000): Access denied for user 'u2238'@'10.68.23.58' (using password: YES) danmichaelo@tools-bastion-03:~$
(ENV)tools.danmicholobot@tools-bastion-03:~$ mysql --defaults-file=replica.my.cnf -henwiki.labsdb enwiki_p ERROR 1045 (28000): Access denied for user 's51488'@'10.68.23.58' (using password: YES) (ENV)tools.danmicholobot@tools-bastion-03:~$
All the tool accounts had the value for user set to ('s12345',). After changing that to s12345, the error persists.