啟動mysql服務器: ./mysqld --defaults-file=/etc/my.cnf --user=root客戶端連接: mysql --defaults-file=/etc/my.cnf 或 mysql -S /tmp/mysql.sock

啟動mysql服務器: ./mysqld_safe --defaults-file=/etc/my.cnf --user=root &客戶端連接: mysql --defaults-file=/etc/my.cnf 或 mysql -S /tm/mysql.sock

cp -v /usr/local/mysql/support-files/mysql.server /etc/init.d/chkconfig --add mysql.server啟動mysql服務器:service mysql.server {start|stop|restart|reload|force-reload|status}客戶端連接: 同1、2

mkdir $MYSQL_BASE/data2cat <<-EOF>> /etc/my.cnf[mysqld_multi]mysqld = /usr/local/mysql/bin/mysqld_safemysqladmin = /user/local/mysql/bin/mysqladminuser = mysqladminpassword = mysqladmin[mysqld3306]port   = 3306socket   = /tmp/mysql3306.sockpid-file = /tmp/mysql3306.pidskip-external-lockingkey_buffer_size = 16Mmax_allowed_packet = 1Mtable_open_cache = 64sort_buffer_size = 512Knet_buffer_length = 8Kread_buffer_size = 256Kread_rnd_buffer_size = 512Kmyisam_sort_buffer_size = 8Mbasedir = /usr/local/mysqldatadir = /usr/local/mysql/data[mysqld3307]port   = 3307socket   = /tmp/mysql3307.sockpid-file = /tmp/mysql3307.pidskip-external-lockingkey_buffer_size = 16Mmax_allowed_packet = 1Mtable_open_cache = 64sort_buffer_size = 512Knet_buffer_length = 8Kread_buffer_size = 256Kread_rnd_buffer_size = 512Kmyisam_sort_buffer_size = 8Mbasedir = /usr/local/mysqldatadir = /usr/local/mysql/data2EOF#mysql -S /tmp/mysql3306.sockmysql>GRANT SHUTDOWN ON *.* TO 'mysqladmin'@'localhost' identified by 'mysqladmin' with grant option;#mysql -S /tmp/mysql3307.sockmysql>GRANT SHUTDOWN ON *.* TO 'mysqladmin'@'localhost' identified by 'mysqladmin' with grant option;啟動mysql服務器:./mysqld_multi --defaults-file=/etc/my.cnf start 3306-3307關閉mysql服務器:mysqladmin shutdown

啟動： mysqld --console 或 net start mysql關閉： mysqladmin -u root shutdown 或 net stop mysql

啟動： service mysql start停止: service mysql stop重啟服務: service mysql restart

// root 用戶登陸 MySQLmysql -uroot -pEnter password:// 新建用戶mysql>insert into mysql.user(Host,User,Password) values("localhost","buff",password("buff"));// 刷新系統權限表mysql>flush privileges;

mysql>exit// 用戶 buff 登陸 MySQLmysql -ubuff -pEnter password:mysql>// 說明新建的用戶buff登錄成功

// root 用戶登陸 MySQLmysql -uroot -pEnter password:// 為用戶 buff 創建一個數據庫 bluebuffmysql>create database bluebuff;// 授權用戶 buff 擁有數據庫 bluebuff 的所有權限mysql>grant all privileges on bluebuff.* to buff@localhost identified by 'buff';mysql>flush privileges;

// 用戶 buff 登陸數據庫mysql -ubuff -pEnter privileges:// 顯示數據庫mysql>show databases;

// root 用戶登陸 MySQLmysql -uroot -pEnter password:// 修改用戶 buff 的密碼mysql>update table mysql.user set password=password('buffer') where User='buff' and Host='localhost';mysql>flush privileges;

// root 用戶登陸 MySQLmysql -uroot -pEnter password:// 刪除用戶 buffmysql>delete from mysql.user where User = 'buff' and Host = 'localhost';mysql>flush privileges;

mysql>drop database bluebuff;

全局權限適用于一個給定服務器中的所有數據庫。這些權限存儲在mysql.user表中。GRANT ALL ON *.*和REVOKE ALL ON *.*只授予和撤銷全局權限。例：a. 創建一個測試賬號test，授予全局層級的權限mysql> grant select,insert on *.* to test@'%' identified by 'test';mysql> flush privileges;b. 查詢授予test的權限show grants for test;select * from mysql.user where user='test'/G;

數據庫權限適用于一個給定數據庫中的所有目標。這些權限存儲在mysql.db和mysql.host表中。GRANT ALL ON db_name.*和REVOKE ALL ON db_name.*只授予和撤銷數據庫權限例：a. 創建一個測試賬號test，授予數據庫層級的權限drop user test;grant select,insert,update,delete on MyDB.* to test@'%' identified by 'test';b. 查詢授予test的權限select * from mysql.user where user='test'/G; --可以看到無任何授權select * from mysql.db where user='test'/G;show grants for test;

表權限適用于一個給定表中的所有列。這些權限存儲在mysql.tables_priv表中。GRANT ALL ON db_name.tbl_name和REVOKE ALL ON db_name.tbl_name只授予和撤銷表權限。例：a. 創建一個測試賬號test，授予表層級的權限drop user test;flush privileges;grant all on MyDB.kkk to test@'%' identified by 'test';b. 查詢授予test的權限show grants for test; select * from mysql.tables_priv/G;

列權限適用于一個給定表中的單一列。這些權限存儲在mysql.columns_priv表中。當使用REVOKE時，您必須指定與被授權列相同的列。例：a. 創建一個測試賬號test，授予列層級的權限drop user test;flush privileges;grant select (id, col1) on MyDB.TEST1 to test@'%' identified by 'test';flush privileges;b. 查詢授予test的權限select * from mysql.columns_priv;show grants for test;

CREATE ROUTINE, ALTER ROUTINE, EXECUTE和GRANT權限適用于已存儲的子程序。這些權限可以被授予為全局層級和數據庫層級。而且，除了CREATE ROUTINE外，這些權限可以被授予為子程序層級，并存儲在mysql.procs_priv表中。例：a. 創建一個測試賬號test，授予子程序層級的權限DROP PROCEDURE IF EXISTS PRC_TEST;DELIMITER //CREATE PROCEDURE PRC_TEST()-> BEGIN-> SELECT * FROM kkk;-> END // DELIMITER ;grant execute on MyDB.PRC_TEST to test@'%' identified by 'test';flush privileges;b. 查詢授予test的權限show grants for test;select * from mysql.procs_priv where User='test';