mysql在linux下的安装

可参考地址：http://www.jb51.net/article/123625.htm

CentOS 开启远程端口访问：http://www.cnblogs.com/chen-lhx/p/8411338.html

1、下载

　　　　下载地址：http://dev.mysql.com/downloads/mysql/5.6.html#downloads

　　　　下载版本：我这里选择的5.6.33，通用版，linux下64位

　　　　也可以直接复制64位的下载地址，通过命令下载：wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz

2、解压

#解压
tar -zxvf mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz
#复制解压后的mysql目录
cp -r mysql-5.6.33-linux-glibc2.5-x86_64 /usr/local/mysql

3、添加用户组和用户

#添加用户组
groupadd mysql
#添加用户mysql 到用户组mysql
useradd -g mysql mysql

4、安装

cd /usr/local/mysql/
mkdir ./data/mysql
chown -R mysql:mysql ./
chmod 755 /etc/init.d/mysqld

#编译安装并初始化mysql，并记住临时密码
./bin/mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data/mysql
当时安装的临时密码为：root@localhost:3?2YBeSg:Nte 

#创建日志文件目录
mkdir -p /data/mysql/log/mariadb/
cd /data/mysql/log/mariadb/
touch mariadb.log
chmod -R 775 mariadb.log
chown -R mysql:mysql mariadb.log
chown -R mysql:mysql /data/mysql

11、启动mysql服务
support-files/mysql.server start

12、登录msyql，输入密码（密码为第9步骤的初始化密码）
mysql -u root -p

13、 修改密码为“123456”
msql>alter user 'root'@'localhost' identified by '123456';
mysql>use mysql;
msyql>update user set user.Host='%' where user.User='root';
mysql>flush privileges;
mysql>quit

14、修改/etc/my.cnf文件
# instructions in http://fedoraproject.org/wiki/Systemd
socket=/tmp/mysql.sock
[mysqld]
datadir=/data/mysql/data
socket=/tmp/mysql.sock
max_connections=1000
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/data/mysql/log/mariadb/mariadb.log
pid-file=/data/mysql/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

 
#加入环境变量，编辑 /etc/profile，这样可以在任何地方用mysql命令了
export PATH=$PATH:/usr/local/mysql//bin
source /etc/profile
 
 
#启动mysql
service mysqld start
#关闭mysql
service mysqld stop
#查看运行状态
service mysqld status

5、错误

　　5.1 sqlyog连接时，报1130错误，是由于没有给远程连接的用户权限问题

　　　　解决1:更改 ‘mysql’数据库‘user’表‘host’项，从‘localhost’改成‘%’。

use mysql;
select 'host' from user where user='root'; 
update user set host = '%' where user ='root';
flush privileges; 

　　　　解决2：直接授权

　　　　　　GRANT ALL PRIVILEGES ON *.* TO ‘root’@'%’ IDENTIFIED BY ‘youpassword’ WITH GRANT OPTION;

　　5.2 安装时的一些错误

　　　　-bash: ./scripts/mysql_install_db: /usr/bin/perl: bad interpreter: 没有那个文件或目录
　　　　解决： yum -y install perl perl-devel

　　　　Installing MySQL system tables..../bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
　　　　解决：yum -y install libaio-devel

6、其他

　　6.1 配置环境变量

　　　　vi + /etc/profile

　　　　export PATH=....:/usr/local/mysql/bin