CentOS下mysql 卸载，安装，测试全过程
时间:2014-07-15 23:46 来源:csdn 作者:luozhonghua2014
Mysql卸载
yum remove mysql mysql-server mysql-libs compat-mysql51
rm -rf /var/lib/mysql
rm /etc/my.cnf
查看是否还有mysql软件：
rpm -qa|grep mysql
有的话继续删除
Mysql安装
1>若本地没有安装包 可以考虑使用yum命令进行下载
# yum -y install mysql-server
# yum -y install php-mysql
2>安装后，MySQL自动启动，默认没有用户名和密码，设置新密码
# /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!
解决：
2.1》/etc/rc.d/init.d/mysqld status 看看mysql是否已经启动
3.2》service mysqld start
3>登录MySQL
> mysql -u root -p
enter password:’aaaaaa’
4>赋权连接的主机
#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>更改默认字符集
# cp my-medium.cnf /etc/my.cnf
在[client]下加入 default-character-set=utf8
在[mysqld]下加入 default-character-set=utf8
查找安装路径
Rpm -qa | grep mysql
Rpm -ql 包名
[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>设置mysql开机自启动
# vi /etc/rc.local
加入如下一行
#/usr/share/mysql/mysql.server start
7>重新启动MySQL
# /etc/init.d/mysql restart
service mysqld restart
8>测试;
[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> (责任编辑：IT)
| Mysql卸载 yum remove mysql mysql-server mysql-libs compat-mysql51 rm -rf /var/lib/mysql rm /etc/my.cnf 查看是否还有mysql软件： rpm -qa|grep mysql 有的话继续删除 Mysql安装 1>若本地没有安装包 可以考虑使用yum命令进行下载 # yum -y install mysql-server # yum -y install php-mysql 2>安装后，MySQL自动启动，默认没有用户名和密码，设置新密码 # /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! 解决： 2.1》/etc/rc.d/init.d/mysqld status 看看mysql是否已经启动 3.2》service mysqld start 3>登录MySQL > mysql -u root -p enter password:’aaaaaa’ 4>赋权连接的主机 #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>更改默认字符集 # cp my-medium.cnf /etc/my.cnf 在[client]下加入 default-character-set=utf8 在[mysqld]下加入 default-character-set=utf8 查找安装路径 Rpm -qa | grep mysql Rpm -ql 包名 [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>设置mysql开机自启动 # vi /etc/rc.local 加入如下一行 #/usr/share/mysql/mysql.server start 7>重新启动MySQL # /etc/init.d/mysql restart service mysqld restart 8>测试; [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> (责任编辑：IT) |