Mariadb UTF8 utf8mb4

在 /etc/my.cnf 加入

[client]
default-character-set = utf8mb4

[mysql]
default-character-set = utf8mb4

[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

# 參考
# https://mathiasbynens.be/notes/mysql-utf8mb4