Shulou(Shulou.com)06/01 Report--

Mysql uninstall

yum remove mysql mysql-server mysql-libs compat-mysql51

rm -rf /var/lib/mysql

rm /etc/my.cnf

Check if there is any MySQL software:

rpm -qa|grep mysql

Continue deleting if there are any

MySQL installation

1> If there is no local installation package, you can consider using yum command to download

# yum -y install mysql-server

# yum -y install php-mysql

2> MySQL starts automatically after installation,[linux tutorial], no username and password by default, set a new password

# /usr/bin/mysqladmin -u root password 'aaaaaa'

[root@luozhonghua ~]# /usr/bin/mysqladmin -u root password 'aaaaaa'

/usr/bin/mysqladmin: connect to server at 'localhost' failed

error: 'Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)'

Check that mysqld is running and that the socket: '/var/lib/mysql/mysql.sock' exists!

Solution:

2.1 The requested URL/etc/rc.d/init.d/mysqld/was not found on this server.

3.2》service mysqld start

3> Login to MySQL

> mysql -u root -p

enter password:'aaaaaa'

4> Empowering connected hosts

#grant select,insert,update,delete on *.* to root@192.168.1.101 identified by 'aaaaaa'

grant select,insert,update,delete on *.* to root@127.0.0.1 identified by 'aaaaaa';

5> Change the default character set

# cp my-medium.cnf /etc/my.cnf

Add default-character-set=utf8 under [client]

Add default-character-set=utf8 under [mysqld]

Find the installation path

Rpm -qa | grep mysql

Rpm -ql package name

[root@luozhonghua charsets]# find /usr -name my-medium.cnf

/usr/share/doc/mysql-server-5.1.73/my-medium.cnf

/usr/share/mysql/my-medium.cnf

#6> Set MySQL to boot automatically

# vi /etc/rc.local

Add the following line

#/usr/share/mysql/mysql.server start

7> Restart MySQL

# /etc/init.d/mysql restart

service mysqld restart

8> Testing;

[root@luozhonghua ~]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 3

Server version: 5.1.73 Source distribution

Copyright (c) 2000, 2013, 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> create database xxx

-> ;

Query OK, 1 row affected (0.06 sec)

mysql> ls

-> ;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual th at corresponds to your MySQL server version for the right syntax to use near 'ls' at line 1

mysql> show databases

-> ;

+--------------------+

| Database |

+--------------------+

| information_schema |

| mysql |

| test |

| xxx |

+--------------------+

4 rows in set (0.06 sec)

mysql> use xxx;

Database changed

mysql> show database

-> ;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual th at corresponds to your MySQL server version for the right syntax to use near 'database' at line 1

mysql> show databases;

+--------------------+

| Database |

+--------------------+

| information_schema |

| mysql |

| test |

| xxx |

+--------------------+

4 rows in set (0.01 sec)

mysql> use xxx;

Database changed

mysql> create table test(

-> int id not null,

-> varchar(20) name null);

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual th at corresponds to your MySQL server version for the right syntax to use near 'int id not null,

varchar(20) name null)' at line 2

mysql> show tables;

Empty set (0.00 sec)

mysql> create table dbtest (

-> id int ,

-> name varchar);

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual th at corresponds to your MySQL server version for the right syntax to use near ')' at line 3

mysql> create table dbtest (

-> id int,

-> name varchar(10));

Query OK, 0 rows affected (0.07 sec)

mysql> show tables;

+---------------+

| Tables_in_xxx |

+---------------+

| dbtest |

+---------------+

1 row in set (0.01 sec)

mysql> drop table xxx;

ERROR 1051 (42S02): Unknown table 'xxx'

mysql> drop table dbtest;

Query OK, 0 rows affected (0.00 sec)

mysql> ls

-> ;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual th at corresponds to your MySQL server version for the right syntax to use near 'ls' at line 1

mysql> show tables;

Empty set (0.00 sec)

mysql>

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.