RedHat Linux AS4U4 i386下安装MySQL5(别人写的,很实用,记录一下)
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2. 将解压后生成的目录,复制到/usr/local/下并改名为mysql
3. // 建立mysql组
# groupadd mysql
//建立mysql用户并且加入到mysql组中
# useradd mysql -g mysql
4. //系统默认的配置,其中设置了性能参数和Mysql的一些路径参数
# cp /usr/local/mysql/support-files/my-medium.cnf /etc/my.cnf
5. # cd /usr/local/mysql
//初试化表并且规定用mysql用户来访问。初始化表以后就开始给mysql和root用户设定访问权限
# ./scripts/mysql_install_db --user=mysql
6.//设定root能访问/usr/local/mysql
# chown -R root /usr/local/mysql
//设定mysql用户能访问/usr/local/mysql/data ,里面存的是mysql的数据库文件.这个目录是在/etc/my.cnf中有配置,在mysql_install_db时产生。
# chown -R mysql /usr/local/mysql/data
//设定mysql用户能访问/usr/local/mysql/data/下的所有文件
# chown -R mysql /usr/local/mysql/data/.
//设定mysql组能够访问/usr/local/mysql
# chgrp -R /usr/local/mysql
7.//运行mysql,如果没有问题的话,应该会出现类似这样的提示:[1] 42264 # Starting mysqld daemon with databases from /usr/local/mysql/var
# /usr/local/mysql/bin/mysqld_safe --user=mysql &
如果出现 mysql ended这样的语句,表示Mysql没有正常启动,你可以到log中查找问题,Log文件的通常在/etc/my.cnf中配置。大多数问题是权限设置不正确引起的.
8.//默认安装密码为空,为了安全你需要修改.
# /usr/local/mysql/bin/mysqladmin -u root password "yourpassword "
以下配置是把mysql设置成系统自启动方法1
-------------------------------方法1--- begin-----------------------------
9. # cp support-files/mysql.server /etc/rc.d/init.d/mysqld
//copy编译目录的一个脚本
# chmod 700 /etc/init.d/mysqld
# chkconfig --add mysqld
//设置使mysql每次启动都能自动运行
# chkconfig --level 345 mysqld on
10.# service mysqld start
//启动mysqld服务
# netstat -nat
//查看3306端口是否打开。要注意在防火墙中开放该端口。
-------------------------------方法1--- end-----------------------------
以下配置是把mysql设置成系统自启动方法2
-------------------------------方法2--- begin-----------------------------
cp /usr/local/mysql/support_files/mysql.server /etc/rc.d/init.d/mysqld
ln -s /etc/rc.d/init.d/mysqld /etc/rc.d/rc5.d/S99mysqld
cp /usr/local/mysql/support_files/my-medium.cnf /etc/my.cnf
/etc/rc.d/init.d/mysqld stop (start)
-------------------------------方法2--- end-----------------------------
补充:在创建数据库的时候使用了gbk字符集,但是在使用的过程中需要utf8的,否则库中中文全部乱码,没办法,改吧!
修改数据库的字符集:
mysql>use mydb
mysql>alter database mydb character set utf-8;
创建数据库指定数据库的字符集:
mysql>create database mydb character set utf-8;
通过配置文件修改:
修改/var/lib/mysql/mydb/db.opt
default-character-set=latin1
default-collation=latin1_swedish_ci
为
default-character-set=utf8
default-collation=utf8_general_ci
重起MySQL:
[root@bogon ~]# /etc/rc.d/init.d/mysql restart
通过MySQL命令行修改:
mysql> set character_set_client=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_connection=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_database=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_results=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_server=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_system=utf8;
Query OK, 0 rows affected (0.01 sec)
mysql> set collation_connection=utf8;
Query OK, 0 rows affected (0.01 sec)
mysql> set collation_database=utf8;
Query OK, 0 rows affected (0.01 sec)
mysql> set collation_server=utf8;
Query OK, 0 rows affected (0.01 sec)
查看:
mysql> show variables like 'character_set_%';
+--------------------------+----------------------------+
| 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/ |
+--------------------------+----------------------------+
8 rows in set (0.03 sec)
mysql> show variables like 'collation_%';
+----------------------+-----------------+
| Variable_name | Value |
+----------------------+-----------------+
| collation_connection | utf8_general_ci |
| collation_database | utf8_general_ci |
| collation_server | utf8_general_ci |
+----------------------+-----------------+
3 rows in set (0.04 sec)
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