Linux Ubuntu Changing the datadir (data directory) of mysql
mysqld.cnf datadir = /new/data/dir mysqld --user=mysql --initialize innodb_flush_log_at_trx_commit= 0 ssl=0 # (5.7 community (self built) might not use SSL for cases. 8.0 always use ssl by default, might be slower) innodb_doublewrite_pages=120 # (if doublewrite enabled for recent 8.0.x "on HDD") innodb_undo_log_truncate=OFF innodb_log_writer_threads=OFF plugin-load-add=auth_socket.so auth_socket=FORCE_PLUS_PERMANENT sudo systemctl stop apparmor sudo systemctl disable apparmor sudo mysqldump --master-data=1 --flush-logs --single-transaction --routines --quick --all-databases > db20230116_1852.sql CREATE USER 'XXXXX'@'%' IDENTIFIED WITH mysql_native_password BY 'XXXXXX'; GRANT ALL PRIVILEGES ON *.* TO 'XXXXX'@'%' WITH GRANT OPTION; FLUSH PRIVILIGES;
