centos7下使用wget命令安装mysql
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1.首先安装wget命令:
yum -y install wget
2.下载mysql
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
3.安装mysql-community-release-el7-5.noarch.rpm包
rpm -ivh mysql-community-release-el7-5.noarch.rpm
4.安装mysql
yum install mysql-server
如下图,表示安装成功
5.安装完毕后登录mysql修改密码
mysql -u root
会有如下报错
6.把/var/lib/mysql的拥有者改为当前用户:
sudo chown -R root:root /var/lib/mysql
7.启动mysql: systemctl start mysqld
设置开机启动:systemctl enable mysqld
systemctl daemon-reload
8.修改密码
$ mysql -u root
mysql > use mysql;
mysql > update user set password=password(‘123456‘) where user=‘root‘;
mysql > exit;
9.需要更改权限才能实现远程连接MYSQL数据库
可以通过以下方式来确认:
root#mysql -h localhost -uroot -p
Enter password: ******
Welcome to the MySQL monitor. Commands end with ; or \\g.
Your MySQL connection id is 4 to server version: 4.0.20a-debug
Type ‘help;’ or ‘\\h’ for help. Type ‘\\c’ to clear the buffer.
mysql> use mysql; (此DB存放MySQL的各种配置信息)
Database changed
mysql> select host,user from user; (查看用户的权限情况)
mysql> select host, user, password from user;
+-----------+------+-------------------------------------------+
| host | user | password |
+-----------+------+-------------------------------------------+
| localhost | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
| 127.0.0.1 | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
| localhost | | |
+-----------+------+-------------------------------------------+
4 rows in set (0.01 sec)
由此可以看出,只能以localhost的主机方式访问。
解决方法:
mysql> Grant all privileges on *.* to ‘root‘@‘%‘ identified by ‘123456‘ with grant option;
(%表示是所有的外部机器,如果指定某一台机,就将%改为相应的机器名;‘root’则是指要使用的用户名,)
mysql> flush privileges; (运行此句才生效,或者重启MySQL)
Query OK, 0 rows affected (0.03 sec)
再次查看。。
mysql> select host, user, password from user;
+-----------+------+-------------------------------------------+
| host | user | password |
+-----------+------+-------------------------------------------+
| localhost | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
| 127.0.0.1 | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
| localhost | | |
| % | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
+-----------+------+-------------------------------------------+
4 rows in set (0.01 sec)
10.用第三方软件测试连接
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