rpm installation
3. Perform rpm -ivh MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
报错:Failed dependencies: /usr/bin/perl is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
libaio.so.1()(64bit) is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
libaio.so.1(LIBAIO_O.1) is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
libaio.so.1(LIBAIO_O.4) is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
The reason: lack of dependent libraries
Resolution: Using yum list | grep perl find the package using yum -y install perl.x86_64 installation
yum -y install libaio.x86_64 re-install mysql execution of sentence
4. Turn service service mysql start
Modify the mysql password / usr / bin / mysql_secure_installation
Execute this script, you can follow the set (Note: delete anonymous users, allows users to connect remotely)
Enter current password for root (enter for none): here without a password, you do not need any input
set a new root password? Enter Y
enter a new root password: password
Remove anonymous users? [Y / n] whether you need to user input n
Disallow root login remotely? [Y / n] Are not allow remote login, enter n behind are input to Y
yum install source
Solution: giving root privileges
First stop MySQL service: service mysqld stop
Add parameters to start mysql: / usr / bin / mysqld_safe --skip-grant-tables & then you can not access any of the restrictions mysql
The first step, the next to see whether the CentOS install mysql
Enter the command: yum list installed | grep mysql
Step 2, to delete the installed mysql
Enter the command: yum -y remove mysql
See complete that success
Step 3 Check yum repository mysql (non-essential)
Enter the command: yum list | grep mysql
Step 4, the mounting yum library mysql
Enter the command: yum -y install mysql mysql-server
Step 5, to start MySql service
Note: Before you turn on mysql, first execute / usr / bin / mysqld_safe --skip-grant-tables &, you can root privileges fully open
Enter the command: service mysqld start
Step 6, change passwords
method one:
mysql > use mysqld; mysql > update user set password=‘123456‘ where user=‘root‘;
Method Two:
Modify the mysql password / usr / bin / mysql_secure_installation
Execute this script, you can follow the set (Note: delete anonymous users, allows users to connect remotely)
Enter current password for root (enter for none): here without a password, you do not need any input
set a new root password? Enter Y
enter a new root password: password
Remove anonymous users? [Y / n] whether you need to user input n
Disallow root login remotely? [Y / n] Are not allow remote login, enter n behind are input to Y
Step 7, open remote logon rights
Let telnet: If the problem does not appear permission, (executed on the machine to install mysql's) authorization in mysql
mysql -uroot -p
(Execute the following statement: all tables in all library%: Any IP address or host can be connected)
Enter the command Description: GRANT ALL PRIVILEGES ON TO 'root' @ '%' IDENTIFIED BY 'your password' WITH GRANT OPTION;.
So that the client has permission to remote login, password reset to mysql
输入命令：GRANT ALL PRIVILEGES ON . TO 'root'@'%' IDENTIFIED BY 'mysql' WITH GRANT OPTION;
Enter the command: FLUSH PRIVILEGES;
So that the client has permission to log on locally, mysql password reset to
输入命令：grant all privileges on . to root@"localhost" identified by "mysql" with grant option;
Enter the command: FLUSH PRIVILEGES;
Step 8, set the boot (non-essential)
chkconfig mysqld on
Note: mysql equivalent of open mysql client services using
mysqld is the mysql server process
Uninstall ...
1. First check the installation mysql
rpm -qa|grep -i mysql
Before installing the display:
MySQL-client-5.5.25a-1.rhel5MySQL-server-5.5.25a-1.rhel5
2. Stop the mysql service, and remove the package
rpm -ev MySQL-client-5.5.25a-1.rhel5 rpm -ev MySQL-server-5.5.25a-1.rhel5
If prompted dependencies error, try using the following command rpm -ev MySQL-client-5.5.25a- 1.rhel5 --nodeps
If an error: error:% preun (xxxxxx) scriptlet failed, exit status 1
Then try using the following command: RPM --noscripts -e MySQL-Client-5.5.25a-1.rhel5
3. Find the directory before the old version of mysql, mysql and delete old versions of files and libraries
Copy the code find / -name mysql
/ Var / lib / mysql
/ Var / lib / mysql
/mysql/usr/lib64/mysql
Delete the corresponding mysql directory
rm -rf /var/lib/mysql
rm -rf /var/lib/mysql
rm -rf /usr/lib64/mysql
Note: /etc/my.cnf not deleted after uninstalling, you need to manually delete
rm -rf /etc/my.cnf
4. Find again the machine is installed mysql
rpm -qa | grep -i mysql no results, explained that it had completely uninstall