未来做啥网站能致富推广计划ppt
news/
2025/9/27 11:01:13/
文章来源:
未来做啥网站能致富,推广计划ppt,有什么平台可以免费发布推广信息,上海企业倒闭Re介绍一下CentOS下MySQL数据库的安装与配置方法MySQL数据库配置的具体步骤#xff1a;1、编辑MySQL的配置文件#xff0c;使用vi /etc/my.cnf[rootsample ~]# vi /etc/my.cnf ← 编辑MySQL的配置文件[mysqld]datadir/var/lib/mysqlsocket/var/lib/mysql/mysql.sock# Defau…Re介绍一下CentOS下MySQL数据库的安装与配置方法MySQL数据库配置的具体步骤1、编辑MySQL的配置文件使用vi /etc/my.cnf[rootsample ~]# vi /etc/my.cnf ← 编辑MySQL的配置文件[mysqld]datadir/var/lib/mysqlsocket/var/lib/mysql/mysql.sock# Default to using old password format for compatibility with mysql 3.x# clients (those using the mysqlclient10 compatibility package).old_passwords1 ← 找到这一行在这一行的下面添加新的规则让MySQL的默认编码为UTF-8default-character-set utf8 ← 添加这一行然后在配置文件的文尾填加如下语句[mysql]default-character-set utf82、启动MySQL并让MySQL在系统重新启动后随系统自动启动。[rootsample ~]# chkconfig mysqld on ← 设置MySQL服务随系统启动自启动[rootsample ~]# chkconfig --list mysqld ← 确认MySQL自启动mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off ← 如果2--5为on的状态就OK[rootsample ~]# /etc/rc.d/init.d/mysqld start ← 启动MySQL服务Initializing MySQL database: [ OK ]Starting MySQL: [ OK ]3、为MySQL的root用户设置密码[rootsample ~]# mysql -u root ← 用root用户登录MySQL服务器Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 2 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql select user,host,password from mysql.user; ← 查看用户信息---------------------------------------------------| user | host | password |---------------------------------------------------| root | localhost | | ← root密码为空| root | sample.centospub.com | | ← root密码为空| | sample.centospub.com | || | localhost | |---------------------------------------------------4 rows in set (0.00 sec)mysql set password for rootlocalhostpassword(在这里填入root密码); ← 设置root密码Query OK, 0 rows affected (0.01 sec)mysql set password for rootsample.centospub.compassword(在这里填入root密码); ← 设置root密码Query OK, 0 rows affected (0.01 sec)mysql select user,host,password from mysql.user; ← 查看用户信息----------------------------------------------------------------| user | host | password |----------------------------------------------------------------| root | localhost | 19b68057189b027f | ← root密码被设置| root | sample.centospub.com | 19b68057189b027f | ← root密码被设置| | sample.centospub.com | || | localhost | |----------------------------------------------------------------4 rows in set (0.01 sec)mysql exit ← 退出MySQL服务器Bye4、测试一下root密码有没有生效。[rootsample ~]# mysql -u root ← 通过空密码用root登录ERROR 1045 (28000): Access denied for user rootlocalhost (using password: NO) ← 出现此错误信息说明密码设置成功[rootlocalhost ~]# mysql -u root -h sample.centospub.com ← 通过空密码用root登录ERROR 1045 (28000): Access denied for user rootlocalhost (using password: NO) ← 出现此错误信息说明密码设置成功[rootsample ~]# mysql -u root -p ← 通过密码用root登录Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g. ← 确认用密码能够成功登录Your MySQL connection id is 5 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql exitBye[rootsample ~]# mysql -u root -h sample.centospub.com -p ← 通过密码用root登录Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g. ← 确认用密码能够成功登录Your MySQL connection id is 6 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql exit ← 退出MySQL服务器Bye5、删除匿名用户。在MySQL刚刚被安装后存在用户名、密码为空的用户。这使得数据库服务器有无需密码被登录的可能性。为消除隐患将匿名用户删除。[rootsample ~]# mysql -u root -p ← 通过密码用root登录Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 7 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql select user,host from mysql.user; ← 查看用户信息----------------------------------| user | host |----------------------------------| | localhost || | 127.0.0.1 || root | localhost || | sample.centospub.com || root | sample.centospub.com |----------------------------------4 rows in set (0.02 sec)mysql delete from mysql.user where user; ← 删除匿名用户Query OK, 2 rows affected (0.17 sec)mysql select user,host from mysql.user; ← 查看用户信息----------------------------------| user | host |----------------------------------| root | localhost || root | sample.centospub.com |----------------------------------2 rows in set (0.00 sec)mysql exit ← 退出MySQL服务器Bye6、删除测试用数据库。在MySQL被安装后存在名为test的空数据库将它删除。这里要注意的是系统默认的还有一个名为mysql的数据库它用于系统管理所以请不要删除。[rootsample ~]# mysql -u root -p ← 通过密码用root登录Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 8 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql show databases; ← 查看系统已存在的数据库-------------| Database |-------------| mysql || test |------------2 rows in set (0.02 sec)mysql drop database test; ← 删除名为test的空数据库Query OK, 0 rows affected (0.07 sec)mysql show databases; ← 查看系统已存在的数据库-------------| Database |-------------| mysql | ← 确认名为test的数据库被删除已不存在-------------1 row in set (0.00 sec)mysql exit ← 退出MySQL服务器Bye-------------------------Re介绍一下CentOS下MySQL数据库的安装与配置方法经过上面的安装与配置MySQL数据库应该可以用了下面让我们来测一下1、包括建立新用户以及用对关系性数据库进行数据库操作的指令来试着建立数据库及数据表。这里新建用户以centospub为例。[rootsample ~]# mysql -u root -p ← 通过密码用root登录Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 9 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql grant all privileges on test.* to centospublocalhost identified by 在这里定义密码; ← 建立对test数据库有完全操作权限的名为centospub的用户Query OK, 0 rows affected (0.03 sec)mysql select user from mysql.user where usercentospub; ← 确认centospub用户的存在与否---------| user |---------| centospub | ← 确认centospub已经被建立---------1 row in set (0.01 sec)mysql exit ← 退出MySQL服务器Bye[rootsample ~]# mysql -u centospub -p ← 用新建立的centospub用户登录MySQL服务器Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 10 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql create database test; ← 建立名为test的数据库Query OK, 1 row affected (0.00 sec)mysql show databases; ← 查看系统已存在的数据库-------------| Database |-------------| test |-------------1 row in set (0.00 sec)mysql use test ← 连接到数据库Database changedmysql create table test(num int, name varchar(50)); ← 在数据库中建立表Query OK, 0 rows affected (0.03 sec)mysql show tables; ← 查看数据库中已存在的表-------------------| Tables_in_test |-------------------| test |-------------------1 row in set (0.01 sec)mysql insert into test values(1,Hello World!); ← 插入一个值到表中Query OK, 1 row affected (0.02 sec)mysql select * from test; ← 查看数据库中的表的信息-------------------------| num | name |-------------------------| 1 | Hello World! |-------------------------1 row in set (0.00 sec)mysql update test set nameHello Everyone!; ← 更新表的信息赋予新的值Query OK, 1 row affected (0.00 sec)Rows matched: 1 Changed: 1 Warnings: 0mysql select * from test; ← 查看数据库中的表的信息----------------------------| num | name |----------------------------| 1 | Hello Everyone! | ← 确认被更新到新的值----------------------------1 row in set (0.01 sec)mysql delete from test where num1; ← 删除表内的值Query OK, 1 row affected (0.00 sec)mysql select * from test; ← 确认删除结果Empty set (0.01 sec)mysql drop table test; ← 删除表Query OK, 0 rows affected (0.01 sec)mysql show tables; ← 查看表信息Empty set (0.00 sec) ← 确认表已被删除mysql drop database test; ← 删除名为test的数据库Query OK, 0 rows affected (0.01 sec)mysql show databases; ← 查看已存在的数据库Empty set (0.01 sec) ← 确认test数据库已被删除(这里非root用户的关系看不到名为mysql的数据库)mysql exit ← 退出MySQL服务器Bye2、删除测试用过的遗留用户。(当然如果是直接建立自己的数据库的可以省略此步)[rootsample ~]# mysql -u root -p ← 通过密码用root登录Enter password: ← 在这里输入密码Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 12 to server version: 4.1.20Type help; or \h for help. Type \c to clear the buffer.mysql revoke all privileges on *.* from centospublocalhost; ← 取消centospub用户对数据库的操作权限Query OK, 0 rows affected (0.00 sec)mysql delete from mysql.user where usercentospub and hostlocalhost; ← 删除centospub用户Query OK, 1 row affected (0.01 sec)mysql select user from mysql.user where usercentospub; ← 查找用户centospub确认已删除与否Empty set (0.01 sec) ← 确认centospub用户已不存在mysql flush privileges; ← 刷新使以上操作生效Query OK, 0 rows affected (0.01 sec)mysql exitBye3、重新启动一次HTTP服务让php-mysql反映到HTTP服务中。[rootsample ~]# /etc/rc.d/init.d/httpd restart ← 重新启动HTTP服务Stopping httpd: [ OK ]Starting httpd: [ OK ]OK了经测试我的网站lunfawang.com MySQL数据库服务器运行正常-------------------------Re介绍一下CentOS下MySQL数据库的安装与配置方法感谢评分
本文来自互联网用户投稿,该文观点仅代表作者本人,不代表本站立场。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如若转载,请注明出处:http://www.mzph.cn/news/916682.shtml
如若内容造成侵权/违法违规/事实不符,请联系多彩编程网进行投诉反馈email:809451989@qq.com,一经查实,立即删除!