I have a fresh LEMP stack installed on a Digital Ocean Ubuntu 20.04 with MySQL 8.
From the command line I see the default sql_mode is set as:
ONLY_FULL_GROUP_BY, STRICT_TRANS_TABLES, NO_ZERO_IN_DATE, NO_ZERO_DATE, ERROR_FOR_DIVISION_BY_ZERO, NO_ENGINE_SUBSTITUTION
I want it to simply read:
ALLOW_INVALID_DATES
I have read this but the setting sql-mode="ALLOW_INVALID_DATES" doesn't work in any of the many my.cnf variants found within the /etc/mysql sub-folders. Niether does "sql_mode". All permutations either get accepted but a mysql service restart fails (until the entry is removed) or accepted but then any attempt to run the mysql CLI fails stating that the sql_mode or sql-mode command isn't recognized.
Setting with this option works:
SET GLOBAL sql_mode = 'ALLOW_INVALID_DATES';
but resets on restart of the service/ server which is not desired.
What am I doing wrong in this configuration step?