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

tar zxvf mysql-5.6.23.tar.gz

安装必要的包sudo yum install cmake gcc gcc-c++ ncurses-devel perl-Data-Dumper cmake ncurses-devel bison autoconf automake zlib* fiex* libxml* libmcrypt* libtool-ltdl-devel*

进入mysql源码目录，生成makefilecd mysql-5.6.23

cmake .

生成失败的的话rm -f CMakeCache.txt

查看问题，进行修复

编译并安装make

sudo make install

mysql将会安装到/usr/local/mysql路径。

添加mysql用户和组

先查看是否存在cat /etc/passwd | grep mysql

cat /etc/group | grep mysql

添加sudo groupadd mysql

sudo useradd -r -g mysql mysql

chown -R mysql:mysql /usr/local/mysql

修改目录和文件权限，安装默认数据库cd /usr/local/mysql

sudo scripts/mysql_install_db --user=mysql?--basedir=/usr/local/mysql --datadir=/usr/local/mysql/data

至此，mysql就可以启动运行了。

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# Foradvice onhow tochange settings please see

# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

[mysqld]

# Remove leading # andsettothe amount ofRAM forthe most important data

# cache inMySQL. Start at70% oftotal RAM fordedicated server, else10%.

# innodb_buffer_pool_size = 128M

# Remove leading # toturn ona very important data integrity option: logging

# changes tothe binarylog betweenbackups.

# log_bin

# These are commonly set, remove the # andsetasrequired.

# basedir = .....

# datadir = /data/mysql/data

?port = .....

# server_id = .....

# socket = .....

# Remove leading # tosetoptions mainly useful forreporting servers.

# The server defaults are faster fortransactions andfast SELECTs.

# Adjust sizes asneeded, experiment tofind 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

#binarylog

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

?

innodb_log_files_in_group=2

innodb_data_home_dir = /opt/data/mysql/

innodb_data_file_path = ibdata1:2000M;ibdata2:2000M;ibdata3:20M:autoextend

innodb_log_group_home_dir = /opt/data/mysql/

# 4G RAM

innodb_buffer_pool_size = 1G

innodb_log_file_size = 256M

innodb_log_buffer_size = 8M

innodb_flush_log_at_trx_commit=0

innodb_thread_concurrency=8

innodb_flush_method=O_DIRECT

# perform

tmp_table_size = 512M

max_heap_table_size=128M

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。

开机启动

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

如果开启时报错 ，重新初始化，注意用户名别用错了sudo /usr/local/mysql/bin/mysqld_safe --user=mysql &

修改root密码/usr/local/mysql/bin/mysql -uroot

use mysql;

select * from mysql?WHERE?user=?'root';

UPDATE user SET?password= PASSWORD('123456') WHERE?user= 'root';

GRANT ALL PRIVILEGES ON *.* TO [email protected]'%' IDENTIFIED BY '123456';

FLUSH PRIVILEGES;

至此，安装基本完成了，一个mysql就能用了。

启动mysql

添加服务，拷贝服务脚本到init.d目录，并设置开机启动$ cp support-files/mysql.server /etc/init.d/mysql

$ chkconfig mysql on

$ service mysql start –启动MySQL

查看是否启动成功netstat -lntp | grep 3306