以root身份登錄
1.#adduser 新建一個用戶mysql，組MySQL
2.把下載的MySQL-XXX.tar.gz拷貝到 /usr/local/下
3.# cd /usr/local/
# gunzip < MySQL-XXX.tar.gz | tar xvf-
# ln -s mysql-XXX MySQL
# cd MySQL
# scripts/MySQL_install_db
# chown -R root /usr/local/MySQL
# chown -R mysql /usr/local/MySQL/data
# chgrp -R mysql /usr/local/MySQL
# chown -R root /usr/local/MySQL/bin
# bin/safe_mysqld --user=MySQL &
