[[email protected] ~]# cat /etc/issue CentOS release 6.5 (Final) Kernel \r on an \m
[[email protected] ~]# uname -a
Linux linuxidc 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

[[email protected] ~]# mkdir -p /taokey/tools
 

[[email protected] ~]# rpm -qa | grep mysql-libs-5.1.71-1.el6.x86_64
[[email protected] ~]# yum -y remove mysql-libs-5.1*
[[email protected] ~]# rpm -qa | grep mysql

[
 
[email protected]uxidc ~]# cd /taokey/tools/
[[email protected] tools]#wget http://dev.mysql.com/Downloads/MySQL-5.6/MySQL-server-5.6.21-1.rhel5.x86_64.rpm
[[email protected] tools]# wget http://dev.mysql.com/Downloads/MySQL-5.6/MySQL-devel-5.6.21-1.rhel5.x86_64.rpm
[[email protected] tools]# wget http://dev.mysql.com/Downloads/MySQL-5.6/MySQL-client-5.6.21-1.rhel5.x86_64.rpm
 

[[email protected] tools]#yum install perl

[[email protected] tools]# rpm -ivh MySQL-client-5.6.21-1.rhel5.x86_64.rpm  
[[email protected] tools]# rpm -ivh MySQL-devel-5.6.21-1.rhel5.x86_64.rpm
[[email protected] tools]# rpm -ivh MySQL-server-5.6.21-1.rhel5.x86_64.rpm
Preparing...                ########################################### [100%]
   1:MySQL-server           ########################################### [100%]
………………
………………
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in '/root/.mysql_secret'.
You must change that password on your first connect,
no other statement but 'SET PASSWORD' will be accepted.
See the manual for the semantics of the 'password expired' flag.
Also, the account for the anonymous user has been removed.
In addition, you can run:
  /usr/bin/mysql_secure_installation

大意是全新安裝設定的root密碼在/root/.mysql_secret中，這是一個隨機密碼，你需要執行/usr/bin/mysql_secure_installation，刪除anonymous使用者。當然不建議用root使用者來執行，rpm包已經建了一個mysql使用者，可以使用這個使用者：

[[email protected] tools]#more /root/.mysql_secret
# The random password set for the root user at Tue Nov 18 22:57:46 2014 (local t
ime): NljqL63OYlGo5cqy    <– 得到root訪問mysql的密碼：NljqL63OYlGo5cqy
# service mysql start
Starting MySQL... SUCCESS!
[[email protected] tools]# /usr/bin/mysql_secure_installation --user=mysql
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
 
In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
 
Enter current password for root (enter for none):    <–使用剛才得到的root的密碼 NljqL63OYlGo5cqy
OK, successfully used password, moving on...
 
Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.
 
You already have a root password set, so you can safely answer 'n'.
 
Change the root password? [Y/n] y   <– 是否更換root使用者密碼，輸入y並回車，強烈建議更換
New password:      <– 設定root使用者的密碼
Re-enter new password:    <– 再輸入一次你設定的密碼
Password updated successfully!
Reloading privilege tables..
 ... Success!
 
 
By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.
 
Remove anonymous users? [Y/n] y   <– 是否刪除匿名使用者,生產環境建議刪除，所以輸入y並回車
 ... Success!
 
Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.
 
Disallow root login remotely? [Y/n] y    <–是否禁止root遠端登入,根據自己的需求選擇Y/n並回車,建議禁止
 ... Success!
 
By default, MySQL comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.
 
Remove test database and access to it? [Y/n] y    <– 是否刪除test資料庫,輸入y並回車
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!
 
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
 
Reload privilege tables now? [Y/n] y   是否重新載入許可權表，輸入y並回車
 ... Success!
 
 
 
 
All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.
 
Thanks for using MySQL!
 
 
Cleaning up...

[[email protected] tools]#  chkconfig
auditd          0:off   1:off   2:on    3:on    4:on    5:on    6:off
blk-availability        0:off   1:on    2:on    3:on    4:on    5:on    6:off
crond           0:off   1:off   2:on    3:on    4:on    5:on    6:off
ip6tables       0:off   1:off   2:on    3:on    4:on    5:on    6:off
iptables        0:off   1:off   2:on    3:on    4:on    5:on    6:off
iscsi           0:off   1:off   2:off   3:on    4:on    5:on    6:off
iscsid          0:off   1:off   2:off   3:on    4:on    5:on    6:off
lvm2-monitor    0:off   1:on    2:on    3:on    4:on    5:on    6:off
mdmonitor       0:off   1:off   2:on    3:on    4:on    5:on    6:off
multipathd      0:off   1:off   2:off   3:off   4:off   5:off   6:off
mysql           0:off   1:off   2:on    3:on    4:on    5:on    6:off   <-看到這個OK了
netconsole      0:off   1:off   2:off   3:off   4:off   5:off   6:off
netfs           0:off   1:off   2:off   3:on    4:on    5:on    6:off
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off
postfix         0:off   1:off   2:on    3:on    4:on    5:on    6:off
rdisc           0:off   1:off   2:off   3:off   4:off   5:off   6:off
restorecond     0:off   1:off   2:off   3:off   4:off   5:off   6:off
rsyslog         0:off   1:off   2:on    3:on    4:on    5:on    6:off
saslauthd       0:off   1:off   2:off   3:off   4:off   5:off   6:off
sshd            0:off   1:off   2:on    3:on    4:on    5:on    6:off
udev-post       0:off   1:on    2:on    3:on    4:on    5:on    6:off

/usr/bin	客戶端程式和指令碼
/usr/sbin	Mysqld伺服器
/var/lib/mysql	資料庫的日誌檔案
/usr/share/info	資訊格式手冊
/usr/share/man	Unix 手冊頁
/usr/include/mysql	包括 （標題） 的檔案
/usr/lib/mysql	mysql的lib包
/usr/share/mysql	雜項的支援檔案，包括錯誤訊息） 字元設定的檔案，示例配置檔案，SQL 資料庫安裝
/usr/share/sql-bench	基準