一、mysql的安装和基本配置

1 安装cmake

#./configure
#make &&make install

2 安装mysql

# yum install ncurses* bison*
  # cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/database/mydata -DSYSCONFDIR=/etc -DTMPDIR=/tmp -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_ARCHIVE_STORAGE_ENGINE=1 -DWITH_BLACKHOLE_STORAGE_ENGINE=1 -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DENABLED_LOCAL_INFILE=1 -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DWITH_EXTRA_CHARSETS=all
  # make
  # make install

3 mysql基本配置 

# vim /etc/my.cnf

[client]
user = mysql
port = 3306
socket = /tmp/mysql.sock
[mysqld]
innodb_buffer_pool_size = 128M
log_bin = master-log
basedir = /usr/local/mysql
datadir = /database/mydata
port = 3306
server_id = 1
socket = /tmp/mysql.sock
join_buffer_size = 128M
sort_buffer_size = 2M
read_rnd_buffer_size = 2M
character_set_server = utf8
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# cd /usr/local/mysql

  # ./scripts/mysql_install_db --user=mysql --datadir=/database/mydata --explicit_defaults_for_timestamp=1
  # service mysqld start
 
4 连接到数据库
# mysql -S /tmp/mysql.sock  \\使用socket连接到mysql
# mysql -u root -h localhost

数据库文件默认在：cd /usr/share/mysql

配置文件默认在：/etc/my.cnf
———————————–
数据库目录：/var/lib/mysql/
配置文件：/usr/share/mysql(mysql.server命令及配置文件)
相关命令：/usr/bin(mysqladmin、mysqldump等命令)(*mysql的一种安全启动方式：/usr/bin/mysqld_safe –user=root &)
启动脚本：/etc/rc.d/init.d/
首先你可以使用以下的命令来寻找MySQL
[root@stuhome /]# find / -name “mysql” -print
一般来说mysql是放在/usr/local/mysql/下的。
然后在其bin目录下有个mysql_config文件，vi之，你会看见这么一句：
ldata=’/usr/local/mysql/var’
忘记root密码
service mysqld stop
mysqld_safe --user=root --skip-grant-tables
mysql -u root
use mysql
update user set password=password("666666") where user="root";
flush privileges;