Install MySQL using yum under Centos7 and create users, databases, and set up remote access

The CentOS7 Yum source does not seem to have MySQL by default. To solve this problem, we need to download the MySQL repo source first.

1. Download the MySQL repo source

$ wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

2. Install the MYSQL-COMMUNITY-RELEASE-EL7-5.NOARCH.RPM package

$ sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm

After installing this package, you will get two MySQL yum repo Source:/etc/yum.repos.d/mysql-community.repo,/etc/yum.repos.d/mysql-community-source.repo.

3. Install MySQL

$ sudo yum install mysql-server

Follow the steps to install it, but after the installation is complete, there is no password and you need to reset the password.

4. Reset Password

Before resetting your password, you must first log in

$ mysql -u root

This error may be reported at login: Error 2002 (HY000): Can ' t connect to local MySQL server through socket '/var/lib/mysql/mysql.sock ' (2) because/var /lib/mysql access rights issues. The following command changes the owner of the/var/lib/mysql to the current user:

$ sudo chown -R openscanner:openscanner /var/lib/mysql

Then, restart the service:

$ service mysqld restart

Next login to reset Password:

$ mysql -u root

mysql > use mysql;mysql > update user set password=password(‘123456‘) where user=‘root‘;mysql > exit;

5. Open 3306 Ports

$ sudo vim /etc/sysconfig/iptables

Add the following content:

-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT

Restart the firewall after saving:

$ sudo service iptables restart

6. Create a regular user and authorize

Example (log on with the root user and assume that the Openscannerstore database has been created):

mysql > use mysql;

# create Openscanner user and password and set the machine to install MySQL service from Access to Mysql > grant all on openscannerstore. * to  ' Openscanner ' @ localhost '              identified by  ' scanner888 ';        

#设置openscanner用户与密码，并从任何机器都可以访问mysqlmysql > grant all on openscannerstore.* to ‘openscanner‘@‘%‘ identified by ‘scanner888‘;

mysql > flush privileges;            #刷新才会生效

Now you can connect to the MySQL server from the client, if the connection reported this error:error 2003 (HY000): Can ' t connect to MySQL server on ' 192.168.x.xxx ' (113). Because we are CENTOS7, please first confirm whether the firewall is turned on, centos7 default is firewall, we can stop and prohibit the use of it, and then start our familiar iptables, so good!

Note: MySQL clients are required to install MySQL client.

View firewalls directly using Iptables-l
Service iptables Stop shutting down the firewall
Service iptables Start/restart turn on or restart

Original address: http://my.oschina.net/fhd/blog/383847
or http://www.mamicode.com/info-detail-503994.html.

Install MySQL using yum under Centos7 and create users, databases, and set up remote access