10，数据挖掘环境搭建-mysql安装

mysql-5.5.10.tar.gz
安装mysql 安装到 /usr/local
在~目录里安装mysql

0，安装准备

yum install -y  cmake make gcc gcc-c++ ncurses-devel bison

1，添加系统伪用户

groupadd mysql
useradd -g mysql mysql

2，创建mysql的安装目录及数据库目录

mkdir -p /usr/local/mysql
mkdir -p /usr/local/mysql/data

2，安装mysql

cd ~
tar -zxvf mysql-5.5.10.tar.gz
cd mysql-5.5.23
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/tmp/mysql.sock \
-DEXTRA_CHARSETS=all \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_MYISAM_STORAGE_ENGINE=1 \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_MEMORY_STORAGE_ENGINE=1 \
-DWITH_READLINE=1 \
-DENABLED_LOCAL_INFILE=1 \
-DMYSQL_USER=mysql \
-DMYSQL_TCP_PORT=3306
make && make install

执行 make && make install 之后，10分钟之后完成mysql安装

3，修改mysql安装文件目录权限

cd /usr/local/mysql
chown -R mysql .
chgrp -R mysql .

4，初始化mysql数据库

/usr/local/mysql/scripts/mysql_install_db --user=mysql

5，修改mysql安装文件目录权限

cd /usr/local/mysql
chown -R root:mysql .
chown -R mysql:mysql .

6，复制配置文件

cp support-files/my-medium.cnf /etc/my.cnf

7，初始化mysql数据库

/usr/local/mysql/scripts/mysql_install_db --user=mysql

8，启动mysql数据库,后台启动

/usr/local/mysql/bin/mysqld_safe --user=mysql &

9，查看mysql

netstat -tlun

3306端口

10,登录mysql

/usr/local/mysql/bin/mysql

11，窗口操作mysql数据库

use mysql;
show tables;
select * from user\G;

12,设置mysql的密码

/usr/local/mysql/bin/mysqladmin -u root password 123

13，登录mysql

/usr/local/mysql/bin/mysql -u root -p

输入mysql密码

14，问题
Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’

ps -A | grep mysql
kill -9 mysqld_safe
kill -9 mysqld