二进制包安装MySQL_5.7 原

[root@adailinux src]# wget http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz

[root@adailinux src]# tar zxvf mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz

[root@adailinux src]# mv mysql-5.7.17-linux-glibc2.5-x86_64 /usr/local/mysql


[root@adailinux src]# cd /usr/local/mysql


[root@adailinux mysql]# ./bin/mysqld  --initialize --user=mysql --datadir=/data/mysql

[root@adailinux mysql]# ./bin/mysqld  --initialize --user=mysql --datadir=/data/mysql
./bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

解决办法：
[root@adailinux mysql]# yum install -y libaio*

[root@adailinux mysql]# ./bin/mysqld  --initialize --user=mysql --datadir=/data/mysql
[Note] A temporary password is generated for root@localhost: 3A)2DdJLkcFP
#注意：此时在此生成一个root密码！

检测：
[root@adailinux mysql]# echo $?
0

执行以下命令：
[root@adailinux mysql]# ./bin/mysql_ssl_rsa_setup --datadir=/data/mysql

编辑MySQL配置文件：
[root@adailinux mysql]# vim /etc/my.cnf
[mysqld]
basedir=/usr/local/mysql
port=3306
datadir=/data/mysql
socket=/tmp/mysql.sock

将MySQL添加到系统服务：
[root@adailinux mysql]# cp support-files/mysql.server /etc/init.d/mysqld

[root@adailinux mysql]# vim /etc/init.d/mysqld

basedir=/usr/local/mysql
datadir=/data/mysql

[root@adailinux mysql]# /etc/init.d/mysqld start
Starting MySQL.Logging to '/data/mysql/adailinux.err'.
....... SUCCESS! 

使用初始化密码登录,进入后直接设置密码,一定要设置一下新密码:
[root@adailinux mysql]# /usr/local/mysql/bin/mysql -uroot -p'3A)￥#LkcFP'
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.17

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set password = password('12#￥%6');
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> quit
Bye

还有一种情况，就是不知道初始化密码

vi /etc/my.cnf

在[mysqld]下面增加一行

skip-grant-tables

重启  /etc/init.d/mysqld restart

/usr/local/mysql/bin/mysql -uroot 

mysql> update user set authentication_string=password('123333') where user='root';

退出来后，更改my.cnf，去掉刚加的 skip-grant-tables

重启 /etc/init.d/mysqld restart

此时就可以使用新的密码了。