Red Hat Enterprise Linux 6 / Oracle Linux 6 (Architecture Independent), RPM Package

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(mysql57-community-release-el6-9.noarch.rpm)

2. 下載并安裝Mysql的yum倉庫

下載Mysql的yum倉庫

http://dev.mysql.com/downloads/repo/yum/

然后安裝一下這個倉庫列表

$ sudo yum localinstall mysql-community-release-el6-5.noarch.rpm  

3. 搜索可安裝的mysql版本

執行這個命令后就能看到可安裝的mysql：

# yum repolist enabled | grep "mysql.*-community.*" 

如果我們是要安裝最新的版本，那么可以直接執行

# sudo yum install mysql-community-server 

如果我們要選擇版本，可以先執行下面這個命令查看一下有哪些版本：

# yum repolist all | grep mysql 

如果要選擇版本的話，有兩種方式，一種是使用命令來

$ sudo yum-config-manager --disable mysql56-community $ sudo yum-config-manager --enable mysql57-community-dmr 

這個命令就是在倉庫中啟用5.7版本的，禁用5.6版本子倉庫
或者編輯/etc/yum.repos.d/mysql-community.repo文件

# Enable to use MySQL 5.6 [mysql56-community] name=MySQL 5.6 Community Server baseurl=//repo.mysql.com/yum/mysql-5.6-community/el/5/$basearch/ enabled=1 gpgcheck=1 gpgkey=file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql  

enabled=0表示禁用
比如要安裝5.7版本的mysql，要確定5.6的enabled=0，5.7的enabled=1，一次保證只啟用一個子倉庫

# Note: MySQL 5.7 is currently in development. For use at your own risk. # Please read with sub pages: https://dev.mysql.com/doc/relnotes/mysql/5.7/en/ [mysql57-community-dmr] name=MySQL 5.7 Community Server Development Milestone Release baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/6/$basearch/ enabled=1 gpgcheck=1 gpgkey=file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql 

然后我們又可以愉快的安裝mysql了

$ sudo yum install mysql-community-server 

安裝完成后我們啟動mysql

$ sudo service mysqld start 

查看mysql狀態

$ sudo service mysqld status 

啟動mysql服務并初始化：

# /etc/init.d/mysqld start Initializing MySQL database:  PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER ! To do so, start the server, then issue the following commands:  /usr/bin/mysqladmin -u root password 'new-password' /usr/bin/mysqladmin -u root -h iZ94vana2fdZ password 'new-password'  Alternatively you can run: /usr/bin/mysql_secure_installation  which will also give you the option of removing the test databases and anonymous user created by default. This is strongly recommended for production servers.  See the manual for more instructions.  Please report any problems at http://bugs.mysql.com/  [ OK ] Starting mysqld: [ OK ] 

4. 相關命令

啟動mysql服務

# service mysqld start 

重啟mysql服務

# service mysqld restart 

停止mysql服務

# service mysqld stop 


Stop the service/daemon of mysql running
[root ~]# service mysql stop    mysql stop/waiting 
Start mysql without any privileges using the following option; This option is used to boot up and do not use the privilege system of MySQL.
[root ~]# mysqld_safe --skip-grant-tables & 
At this moment, the terminal will seem to halt. Let that be, and use new terminal for next steps.
enter the mysql command prompt
[root ~]# mysql -u root mysql>  
Fix the permission setting of the root user ;
mysql> use mysql; Database changed mysql> select * from  user; Empty set (0.00 sec) mysql> truncate table user; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.01 sec) mysql> grant all privileges on *.* to root@localhost identified by 'YourNewPassword' with grant option; Query OK, 0 rows affected (0.01 sec) 
*if you don`t want any password or rather an empty password
    mysql> grant all privileges on *.* to root@localhost identified by '' with grant option;     Query OK, 0 rows affected (0.01 sec)*     mysql> flush privileges;     Query OK, 0 rows affected (0.00 sec) 
Confirm the results:
    mysql> select host, user from user; +-----------+------+ | host      | user | +-----------+------+ | localhost | root | +-----------+------+ 1 row in set (0.00 sec) 
Exit the shell and restart mysql in normal mode.
mysql> quit; [root ~]# kill -KILL [PID of mysqld_safe] [root ~]# kill -KILL [PID of mysqld] [root ~]# service mysql start 
Now you can successfully login as root user with the password you set
 [root ~]# mysql -u root -pYourNewPassword   mysql>