centos安装 mysql
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1、首先要看看有没有已经安装好的MySQL,以免产生冲突
# rpm -qa | grep MySQL
2、卸载冲突的版本
# rpm -e MySQL-version //要先后卸载客服端和服务器端
3、安装MySQL客服端和服务器端
# rpm -ivh MySQL-server-community-5.1.48-1.rhel5.i386.rpm
# rpm -ivh MySQL-client-community-5.1.48-1.rhel5.i386.rpm
4、安装后,MySQL自动启动,默认没有用户名和密码,设置新密码
# /usr/bin/mysqladmin -u root password '123456'
5、登录MySQL
>mysql -uroot -p
enter password:'123456'
6、对你连接的主机分配权限
>mysql GRANT SELECT,INSERT,UPDATE,DELETE ON *.* TO root@xxx.xxx.x.xx identified by '123456'; //xxx.xxx.x.xx是你的IP
7、更改Mysql默认字符集
# cp my-medium.cnf /etc/my.cnf
在[client]下加入 default-character-set=utf8
在[mysqld]下加入 default-character-set=utf8
8、设置mysql开机自启动
# vi /etc/rc.local
加入如下一行
/usr/share/mysql/mysql.server start
9、重新启动MySQL
# /etc/init.d/mysql restart
ok,就这些重要的步骤,至于MySQL那些关键的目录,我就不多做解释了,仅供参考学习。
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1.下载MySQL
我下载的版本:mysql-5.5.22.tar.gz
2.安装之前先卸载CentOS自带的MySQL
[root@localhost ~]# yum remove mysql
3.编译安装Cmake
下载cmake源码包:http://www.cmake.org/files/v2.8/cmake-2.8.4.tar.gz
从共享目录移至usr目录
[root@localhost ~]# mv /mnt/hgfs/Share-CentOS/cmake-2.8.4.tar.gz /usr/cmake-2.8.4.tar.gz
[root@localhost ~]# cd /usr
解压并安装cmake
[root@localhost usr]# tar xzvf cmake-2.8.4.tar.gz
[root@localhost usr]# cd cmake-2.8.4
[root@localhost cmake-2.8.4]# ./bootstrap
---------------------------------------------
CMake 2.8.4, Copyright 2000-2009 Kitware, Inc.
---------------------------------------------
Error when bootstrapping CMake:
Cannot find appropriate C compiler on this system.
Please specify one using environment variable CC.
See cmake_bootstrap.log for compilers attempted.
---------------------------------------------
Log of errors: /usr/local/src/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log
---------------------------------------------
报错:缺少C的编译器
解决办法:安装gcc编译器
[root@localhost ~]# yum install gcc
继续安装Cmake
[root@localhost cmake-2.8.4]# ./bootstrap
---------------------------------------------
CMake 2.8.4, Copyright 2000-2009 Kitware, Inc.
C compiler on this system is: cc
---------------------------------------------
Error when bootstrapping CMake:
Cannot find appropriate C++ compiler on this system.
Please specify one using environment variable CXX.
See cmake_bootstrap.log for compilers attempted.
---------------------------------------------
Log of errors: /usr/local/src/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log
---------------------------------------------
报错:缺少C++编译器
解决办法:安装gcc-c++编译器
[root@localhost ~]# yum install gcc-c++
再次安装
[root@localhost cmake-2.8.4]# ./bootstrap
没有报错,编译安装
[root@localhost cmake-2.8.4]# gmake
[root@localhost cmake-2.8.4]# gmake install
4.正式开始安装MySQL
添加MySQL用户和用户组
[root@localhost ~]# groupadd mysql
[root@localhost ~]# useradd -g mysql mysql
MySQL源码包从共享文件夹移至/usr并解压
[root@localhost ~]mv /mnt/hgfs/Share-CentOS/mysql-5.5.22.tar.gz /usr/mysql-5.5.22.tar.gz
[root@localhost usr]# tar xzvf mysql-5.5.22.tar.gz
[root@localhost usr]# cd mysql-5.5.22
Cmake运行
[root@localhost mysql-5.5.22]# cmake .
开始编译安装
[root@localhost mysql-5.5.22]# make && make install
进入安装目录,将程序二进制的所有权改为root,数据目录的说有权改为mysql用户,更新授权表
[root@localhost mysql-5.5.22]# cd /usr/local/mysql/
[root@localhost mysql]# chown -R root .
[root@localhost mysql]# chown -R mysql .
[root@localhost mysql]# chgrp -R mysql .
[root@localhost mysql]# scripts/mysql_install_db --user=mysql
安全启动MySQL(默认密码为空)
[root@localhost mysql]#./bin/mysqld_safe --user=mysql&
报错:
120908 00:16:25 mysqld_safe Logging to '/usr/local/mysql/data/CentOS.err'.
120908 00:16:26 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
解决方法:
[root@CentOS ~]# cd /usr/local/mysql/data
[root@CentOS data]# ls -l
总用量 29744
-rw-rw---- 1 mysql root 1585 9月 8 00:16 CentOS.err
-rw-rw---- 1 mysql mysql 6 9月 8 00:16 CentOS.pid
-rw-rw---- 1 mysql mysql 18874368 9月 8 00:16 ibdata1
-rw-rw---- 1 mysql mysql 5242880 9月 8 00:16 ib_logfile0
-rw-rw---- 1 mysql mysql 5242880 9月 8 00:16 ib_logfile1
drwxr-xr-x 2 mysql mysql 4096 9月 8 00:14 mysql
-rw-rw---- 1 mysql mysql 27293 9月 8 00:14 mysql-bin.000001
-rw-rw---- 1 mysql mysql 1031892 9月 8 00:14 mysql-bin.000002
-rw-rw---- 1 mysql mysql 107 9月 8 00:16 mysql-bin.000003
-rw-rw---- 1 mysql mysql 57 9月 8 00:16 mysql-bin.index
drwx------ 2 mysql mysql 4096 9月 8 00:14 performance_schema
drwxr-xr-x 2 mysql mysql 4096 9月 8 00:08 test
[root@CentOS data]# chgrp -R mysql CentOS.err
[root@CentOS data]# ls -l
总用量 29736
-rw-rw---- 1 mysql mysql 1585 9月 8 00:16 CentOS.err
-rw-rw---- 1 mysql mysql 6 9月 8 00:16 CentOS.pid
-rw-rw---- 1 mysql mysql 18874368 9月 8 00:16 ibdata1
-rw-rw---- 1 mysql mysql 5242880 9月 8 00:16 ib_logfile0
-rw-rw---- 1 mysql mysql 5242880 9月 8 00:16 ib_logfile1
drwxr-xr-x 2 mysql mysql 4096 9月 8 00:14 mysql
-rw-rw---- 1 mysql mysql 27293 9月 8 00:14 mysql-bin.000001
-rw-rw---- 1 mysql mysql 1031892 9月 8 00:14 mysql-bin.000002
-rw-rw---- 1 mysql mysql 107 9月 8 00:16 mysql-bin.000003
-rw-rw---- 1 mysql mysql 57 9月 8 00:16 mysql-bin.index
drwx------ 2 mysql mysql 4096 9月 8 00:14 performance_schema
drwxr-xr-x 2 mysql mysql 4096 9月 8 00:08 test
连接本机MySQL
[root@localhost mysql]#mysql –u root –p
提示输入password,默认为空,按Enter即可
断开连接
mysql>exit;
为root账户设置密码
[root@localhost ~]# cd /usr/local/mysql/bin
[root@localhost mysql]# ./bin/mysqladmin -u root password 123456
Enter Password:123456
设置选项文件,将配置文件拷贝到/etc下
[root@localhost mysql]# cp support-files/my-medium.cnf /etc/mysql.cnf
设置开机自启动
[root@localhost mysql]# cp support-files/mysql.server /etc/init.d/mysql
[root@localhost mysql]# chmod +x /etc/init.d/mysql
通过服务来启动和关闭Mysql
[root@localhost ~]# service mysql start
[root@localhost ~]# service mysql stop
5.安装设置完毕,之后使用只需启动-连接-断开-关闭,命令如下:
[root@CentOS mysql]# service mysql start
Starting MySQL.. [确定]
[root@CentOS mysql]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.22 Source distribution
Copyright (c) 2000, 2011, 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;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.07 sec)
mysql> exit;
Bye
[root@CentOS mysql]# service mysql stop
Shutting down MySQL. [确定]
6.其它:
查看进程命令 ps –ef|grep mysqld
kill进程命令 kill –9 进程号
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