From https://phabricator.wikimedia.org/T273704#6817387 we will need to update some GLOBAL settings. This will need to be done for the utf8mb4 conversion (T270218).
Specifically we will need:
# needed SET GLOBAL innodb_default_row_format='dynamic'; # needed SET GLOBAL innodb_file_format='Barracuda'; # already set SET GLOBAL innodb_file_per_table = 1; # needed SET GLOBAL innodb_large_prefix = ON; # needed SET GLOBAL innodb_strict_mode = ON;
We need to template these into our my.cnf.erb and apply them to the live systems.