安装
#yum源
http://dev.mysql.com/downloads/repo/yum/
#安装
rpm -Uvh http://dev.mysql.com/get/mysql57-community-release-el6-7.noarch.rpm
yum install mysql-community-server
#启动服务
service mysqld start
#登录mysql
mysql -u root -p
# mysql5.7安装完成后会初始化一个root用户的默认密码
grep 'temporary password' /var/log/mysqld.log
2016-03-20T10:13:53.378957Z 1 [Note] A temporary password is generated for root@localhost: Ad2onLig55=l
#启动MySQL服务
service mysqld start
#执行MySQL的安全配置向导
[root@iZ11fek1j6cZ log]# mysql_secure_installation
Securing the MySQL server deployment.
Enter password for user root:
The 'validate_password' plugin is installed on the server.
The subsequent steps will run with the existing configuration
of the plugin.
Using existing password for root.
Estimated strength of the password: 100
Change the password for root ? ((Press y|Y for Yes, any other key for No) : n
... skipping.
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Success.
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : n
... skipping.
By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
- Dropping test database...
Success.
- Removing privileges on test database...
Success.
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
Success.
All done!
修改编码
vi /etc/my.cnf
[client]
default-character-set = utf8
[mysqld]
default-storage-engine = INNODB
character-set-server = utf8
collation-server = utf8_general_ci
#重启MySQL服务
service mysqld restart
#检查编码
$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor...
...
mysql> show variables like '%char%';
+--------------------------------------+----------------------------+
| Variable_name | Value |
+--------------------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
| validate_password_special_char_count | 1 |
+--------------------------------------+----------------------------+
9 rows in set (0.00 sec)
mysql>
#开启自动启动服务
chkconfig mysqld on
#检查服务
chkconfig --list | grep mysql
卸载
#是否已经安装了mysql数据库
rpm -qa | grep mysql
#普通删除模式
rpm -e mysql
#强力删除模式
rpm -e --nodeps mysql
#是否已经卸载成功
rpm -qa | grep mysql
问题
ERROR 1130: Host 'xxx' is not allowed to connect to this MySQL server
解决方法：
1。 改表法。可能是你的帐号不允许从远程登陆，只能在localhost。这个时候只要在localhost的那台电脑，登入mysql后，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，从"localhost"改称"%"
use mysql;
mysql>update user set host = '%' where user = 'root';
mysql>select host, user from user;
REFER:
centos很正规的使用yum安装mysql5.7小白鼠版
http://www.hishenyi.com/archives/808
如果mysql中某sql执行慢,怎么记录下来
http://www.hishenyi.com/archives/763