1、 下載mysql-5.7.10-linux-glibc2.5-i686.tar.gz
2、解壓縮到/usr/local/下面，mysql的主目錄命名爲mysql
[root@localhost local]# cd /usr/local/soft/
[root@localhost soft]# tar zvxf mysql-5.7.10-linux-glibc2.5-i686.tar.gz -C /usr/local
[root@localhost soft]# cd ..
[root@localhost local]# mv mysql-5.7.10-linux-glibc2.5-i686/ mysql
3、在mysql下面創建data數據庫文件目錄
[root@localhost local]# mkdir mysql/data
4、創建mysql的用戶組和用戶，並對mysql目錄設置用戶組和用戶
[root@localhost local]# groupadd mysql
[root@localhost local]# useradd mysql -g mysql
[root@localhost local]# cd mysql
[root@localhost mysql]# pwd
/usr/local/mysql
[root@localhost mysql]# chown -R mysql .
[root@localhost mysql]# chgrp -R mysql .
5、初始化mysql並啓動mysql服務
[root@localhost mysql]# cd /usr/local/mysql/bin
[root@localhost bin]# yum install libaio
./mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data已加載插件：fastestmirror, refresh-packagekit, security
設置安裝進程
Loading mirror speeds from cached hostfile
- base: mirrors.opencas.cn
- extras: mirrors.btte.net
- updates: mirrors.btte.net
包 libaio-0.3.107-10.el6.i686 已安裝並且是最新版本
無須任何處理
[root@localhost bin]# ./mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data
2016-01-09 12:00:28 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2016-01-09 12:00:33 [WARNING] The bootstrap log isn't empty:
2016-01-09 12:00:33 [WARNING] 2016-01-09T04:00:29.262989Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2016-01-09T04:00:29.264643Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2016-01-09T04:00:29.264653Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)
[root@localhost support-files]cd /etc
[root@localhost etc]rm –rf my.cnf
[root@localhost bin]# cd /usr/local/mysql/support-files
[root@localhost support-files]#cp my-default.cnf /etc/my.cnf
[root@localhost support-files]# ./mysql.server start
Starting MySQL. SUCCESS!
6、登錄mysql，此版本最新版不許空密碼登錄，實際上有個初始化密碼保存在/root/.mysql_secret這個文件裏面，用這個密碼第一次登錄後，再修改密碼。因此先cat查看下初始化密碼（隨機的，每次安裝看到的密碼都不一樣）：
[root@localhost ~]# cat /root/.mysql_secret
Password set for user 'root@localhost' at 2016-01-09 12:00:28
:5ul#H6dmcwX
利用初始化密碼:5ul#H6dmcwX開始登錄mysql：
設置環境變量：vi /etc/profile
export PATH=$PATH:/usr/local/mysql/bin
source /etc/profile
[root@localhost ~]# cd /usr/local/mysql/bin
[root@localhost bin]# ./mysql -uroot -p:5ul#H6dmcwX
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 5
Server version: 5.7.10
Copyright (c) 2000, 2015, 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>
顯示登錄成功，可以執行mysql命令操作了！
7、改mysql的root密碼，新密碼在此爲'leizm'
mysql> set password=password(' 123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
Mysql> flush privileges；
8、設定遠程登錄mysql。在Linux下爲了安全，默認是不允許mysql本機以外的機器訪問mysql數據庫服務，因此需要重新授權root。方便遠程訪問。
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select Host,User from user;
+-----------+-----------+
| Host | User |
+-----------+-----------+
| % | root |
| localhost | mysql.sys |
| localhost | root |
+-----------+-----------+
3 rows in set (0.00 sec)
mysql> GRANT ALL PRIVILEGES ON . TO root@'%' identified by ' 123456 ';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
授權語句最後的‘rxh@2016’是mysql數據庫root用戶的新密碼。
9、非必要的步驟，如果遠程連不上，估計是防火牆的問題，關閉試試：
[root@localhost mysql]# service iptables stop
setenforce 0iptables：將鏈設置爲政策 ACCEPT：filter [確定]
iptables：清除防火牆規則： [確定]
iptables：正在卸載模塊： [確定]
[root@localhost mysql]# setenforce 0
setenforce: SELinux is disabled
cp mysql.server /etc/rc.d/init.d/
mv mysql.server mysqld
chkconfig --add mysqld
chkconfig mysqld on
chkconfig --list mysqld
重置mysql密碼
service mysqld stop
運行mysqld_safe --skip-grant-tables &
如果此時不想被遠程連接：mysqld_safe --skip-grant-tables --skip-networking &
使用mysql連接server
更改密碼： update mysql.user set authentication_string=password('123qwe') where user='root' and Host = 'localhost';
*特別提醒注意的一點是，新版的mysql數據庫下的user表中已經沒有Password字段了
而是將加密後的用戶密碼存儲於authentication_string字段
mysql> flush privileges;
mysql> quit;