linux系统安装mysql5.7

1:下载mysql5.7安装包

wget http://dev.MySQL.com/get/Downloads/MySQL-5.7/mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz 

2：解压复制

tar -xvf mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz  
mv mysql-5.7.11-Linux-glibc2.5-x86_64/* /usr/local/mysql/

3：创建data

mkdir /usr/local/mysql/data

4:创建用户和权限

groupadd mysql
useradd -g mysql mysql
chown -R mysql.mysql /usr/local/mysql/

5：初始化

./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

6：复制配置文件

cp -a ./support-files/my-default.cnf /etc/my.cnf

7：增加免密登陆

vi /etc/my.cnf

修改my.cnf文件  
# These are commonly set, remove the # and set as required.  
basedir = /usr/local/mysql  
datadir = /usr/local/mysql/data  
port = 3306  
# server_id = .....  
socket = /tmp/mysql.sock  
character-set-server = utf8  
# 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

末尾增加

skip-grant-tables

8：mysql服务放到系统服务中

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cp -a ./support-files/mysql.server /etc/init.d/mysqld

9：启动

service mysqld start

10：修改mysql密码

[root@localhost mysql]# mysql -u root mysql  
mysql>update user set authentication_string=PASSWORD('你的密码') where user='root';