1.下载源码

wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.23.tar.gz

2.解压

tar zxvf mysql-5.6.23.tar.gz

3.安装必要的包

sudo yum install cmake gcc-c++ ncurses-devel perl-Data-Dumper

4.进入mysql源码目录，生成makefil

cmake .

5.编译

make

6.安装

sudo make install

mysql将会安装到/usr/local/mysql路径。

7.添加mysql用户和组

sudo groupadd mysql

sudo useradd -r -g mysql mysql

8.修改目录和文件权限，安装默认数据库

cd /usr/local/mysql

sudo chown -R mysql .

sudo chgrp -R mysql .

sudo scripts/mysql_install_db –user=mysql

sudo chown -R root .

sudo chown -R mysql data

至此，mysql就可以启动运行了。

9.启动mysql

CentOS7自带MariaDB的支持，/etc下默认存在my.cnf文件干扰mysql运行，需要先删掉

cd /etc

sudo rm -fr my.cnf my.cnf.d

然后再/etc下重建my.cnf文件，内容如下(或可以不创建，但已经要将/etc/my.cnf删除，默认使用：/usr/local/mysql/my.cnf)

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

[mysqld]

# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M

# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin

# These are commonly set, remove the # and set as required.
# basedir = …..
# datadir = /data/mysql/data
# port = …..
# server_id = …..
# socket = …..

# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M

max_connection = 10000
sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

#binary log
log-bin = mysql-bin
binlog_format = mixed
expire_logs_day = 30

#slow query log
slow_query_log = 1
slow_query_log_file = /var/log/mysql/slow.log
long_query_time = 3
log-queries-not-using-indexes
log-slow-admin-statements

现在可以启动mysql了

sudo /usr/local/mysql/bin/mysqld_safe –user=mysql &

 

CentOS7 不能使用service控制mysql服务，而源码安装的mysql也没有提供Systemd的控制脚本。

于是编辑/etc/rc.d/rc.local文件，添加mysql的开机启动命令。

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

然后给/etc/rc.d/rc.local添加可执行权限

sudo chmod a+x /etc/rc.d/rc.local

9.修改root密码(或可使用mysqladmin设置密码)

$/usr/loca/mysql/bin/mysql -u root
use mysql;
UPDATE user SET password = PASSWORD(‘test2016′) WHERE user = ‘root';

GRANT ALL PRIVILEGES ON *.* TO root@’%’ IDENTIFIED BY ‘passwd2016′;

FLUSH PRIVILEGES;

使用mysqladmin设置密码：(使用mysqladmin可以进入到bin目录或者设置PATH)

$mysqladmin -u root password 123456

至此，安装基本完成了，一个mysql就能用了。

 

设置之前，我们需要先设置PATH，要不不能直接调用mysql

修改/etc/profile文件，在文件末尾添加

$vim /etc/profile

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

关闭文件，运行下面的命令，让配置立即生效

$source /etc/profile

连接本机MySQL

$mysql –u root –p

提示输入password，默认为空，按Enter即

 

设置选项文件，将配置文件拷贝到/etc下

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

设置开机自启动

$cp support-files/mysql.server /etc/init.d/mysql
$chmod +x /etc/init.d/mysql
$ chkconfig mysql on

通过服务来启动和关闭Mysql

$service mysql start
$ service mysql stop