MYSQL安裝（完整版）

一、完全卸載MYSQL

yum remove mysql mysql-server mysql-libs compat-mysql51
rm -rf /var/lib/mysql
rm /etc/my.cnf
#查看是否還有mysql軟件：
rpm -qa|grep mysql
#如果存在的話，繼續刪除即可。

二、下載(MYSQL5.6)

下載地址：http://dev.mysql.com/downloads/mysql/

MySQL-server（5.6）

MySQL-client (5.6)

MySQL-devel  (5.6)

三、安裝

rpm -ivh MySQL-server-5.6.17-1.linux_glibc2.5.x86_64.rpm
rpm -ivh MySQL-client-5.6.17-1.linux_glibc2.5.x86_64.rpm
rpm -ivh MySQL-devel-5.6.17-1.linux_glibc2.5.x86_64.rpm

四、問題

ERROR 1045 (28000): Access denied for user 'mysql'@'localhost' (using password: NO)?

第一步：修改數據庫默認密碼
/etc/init.d/mysql stop   (service mysqld stop )
/usr/bin/mysqld_safe --skip-grant-tables
另外開個SSH連接
[root@localhost ~]# mysql
mysql>use mysql
mysql>update user set password=password("123456") where user="root";
mysql>flush privileges;
mysql>exit


第二步：
[mysql@localhost etc]$ ps -A | grep mysql
4532 pts/0    00:00:00 mysqld_safe
5542 pts/0    00:00:00 mysqld
[mysql@localhost etc]$ kill -9 4532 5542
正常啓動 MySQL：/etc/init.d/mysql start   (service mysql start)


第三步：

[root@linux-ke bob]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.17
Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> exit;
Bye

第四步：

Server version: 5.6.17
Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql>  SET PASSWORD = PASSWORD('123456');
Query OK, 0 rows affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.00 sec)
mysql>

完成