mysql在centos上的安装与配置

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groupadd mysql
useradd -r -g mysql mysql
mv mysql-5.5.27-linux2.6-i686/ /usr/local/
ln -s mysql-5.5.27-linux2.6-i686/ mysql
cd /usr/local/mysql
chown -R mysql .
chgrp -R mysql .
/usr/local/mysql/scripts/mysql_install_db --user=mysql

ERROR:
scripts/mysql_install_db: ./bin/my_print_defaults: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory
Neither host 'host-1' nor 'localhost' could be looked up with
./bin/resolveip
Please configure the 'hostname' command to return a correct
hostname.
If you want to solve this at a later stage, restart this script
with the --force option


yum install glibc.i686
yum install zlib.i686
yum install libgcc.i686
#与mysql的版本对应，下载libaio-0.3.107-10.el6.i686.rpm安装
rpm -ivh libaio-0.3.107-10.el6.i686.rpm

chown -R root:root ./
chown -R mysql:mysql data

cp support-files/mysql.server /etc/init.d/mysql
service mysql start
ps -ef|grep mysql

#修改mysql的root用户密码，root初始密码为空的：
执行命令：./bin/mysqladmin -u root password '密码'

# 'Can't connect to local MySQL server through socket '/tmp/mysql.sock'
# find / -name mysql.sock
# /var/lib/mysql/mysql.sock，执行以下命令后再重置密码Ok，
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock

Error：
# ./bin/mysql -uroot -p
./bin/mysql: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory
安装两个包后解决：
yum install libstdc++.so.6
yum install libncurses.so.5

授权root远程登录
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION
mysql>FLUSH PRIVILEGES

#Mysql初始化root密码和允许远程访问

mysql默认root用户没有密码，输入mysql –u root 进入mysql

1、初始化root密码
进入mysql数据库
mysql>update user set password=PASSWORD(‘123456’) where User='root';

2、允许mysql远程访问,可以使用以下三种方式:

a、改表。
mysql -u root –p
mysql>use mysql;
mysql>update user set host = '%' where user = 'root';
mysql>select host, user from user;

b、授权。
例如，你想root使用123456从任何主机连接到mysql服务器。
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
如果你想允许用户jack从ip为10.10.50.127的主机连接到mysql服务器，并使用654321作为密码
mysql>GRANT ALL PRIVILEGES ON *.* TO 'jack'@’10.10.50.127’ IDENTIFIED BY '654321' WITH GRANT OPTION;
mysql>FLUSH RIVILEGES
c:在安装mysql的机器上运行：
//进入MySQL服务器
d:\mysql\bin\>mysql -h localhost -u root
//赋予任何主机访问数据的权限
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION
//使修改生效
mysql>FLUSH PRIVILEGES
//退出MySQL服务器
mysql>EXIT