linux mysqlµÄ°²×°¼°Ò»Ð©ÅäÖ÷½·¨

1.¼ì²éÒÔÇ°°²×°µÄMySQL,жÔØ¡£
rpm -qa|grep -i mysql
rpm -e XXXXX
×¢Èç¹û³öÏÖÁ½ÌõÏàͬµÄ£¬ÔòʹÓÃrpm -e --allmatches
2.°²×°rpm°ü¡£
rpm -ivh MySQL-server-community-5.1.37-0.rhel5.x86_64.rpm
rpm -ivh MySQL-shared-community-5.1.37-0.rhel5.x86_64.rpm
rpm -ivh MySQL-devel-community-5.1.37-0.rhel5.x86_64.rpm
rpm -ivh MySQL-client-community-5.1.37-0.rhel5.x86_64.rpm
3.cp ²ÎÊýÎļþµ½ /etc/my.cnf
find / -name "my*.cnf"
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transaction-isolation=READ-COMMITTED
default-storage-engine=INNODB
innodb_flush_log_at_trx_commit=2
4.¸üÐÂȨÏÞ¼°Óû§
mysql -u root -p
use mysql;
select user,host from user;
delete from user where user <> 'root';
delete from user where host <> 'localhost';
update user set host ='%' where user ='root';
select user,host from user;
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mysql> select user,host from user;
+------+------+
| user | host |
+------+------+
| root | %    |
+------+------+
1 row in set (0.00 sec)
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grant select,insert,update,delete,create,drop,alter,index,RELOAD, lock tables, execute, create routine, alter routine,Create temporary tables 
on *.* to mysql@"%" identified by "123456";
set global transaction isolation level read committed;
set session transaction isolation level read committed;
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flush privileges;
5.ÉèÖÃÃÜÂë(123456)
mysqladmin -u root -p password ×××
####mysqladmin -u root -p password mypasswd
6.ÖØÆô·þÎñ£¬ÑéÖ¤ÉèÖá£
/etc/init.d/mysql restart
怫mysql
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rpm -e --justdb mysql-connector-odbc-5.1.5-0
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1234 K
bytes of memory
MySQL Íü¼Ç¿ÚÁîµÄ½â¾ö°ì·¨
Èç¹û MySQL ÕýÔÚÔËÐУ¬Ê×ÏÈɱ֮£º killall -TERM mysqld¡£
Æô¶¯ MySQL £ºbin/safe_mysqld --skip-grant-tables &
¾Í¿ÉÒÔ²»ÐèÒªÃÜÂë¾Í½øÈë MySQL ÁË¡£
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use mysql;
update user set password=password("new_pass") where user="root";
update user set password=password(