При миграции

# mysql_config_editor set --login-path=root -hlocalhost -uroot -p

# mysql --login-path=root -Ni mysql -e "SELECT User,Host FROM user        \
WHERE User!='root' ;" | awk '{print "SHOW GRANTS FOR `"$1"`@`"$2"`\;"}'   \
| xargs -I {} mysql --login-path=root -Ni mysql -e "{}" | awk '{print $0";"}'