Install MySQL database and set up remote access under CENTOS7 using Yum

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 root:root/var/lib/mysql

Then, restart the service:

$ Service Mysqld Restart

Next login to reset Password:

$ mysql-u rootmysql > Use mysql;mysql > Update user set Password=password (' 123456 ') where user= ' root '; MySQL > ex It

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 in with root):

mysql > Use MySQL;

MySQL > Grant all privileges on * * to ' root ' @ '% ' identified by ' 123456 ';
MySQL > Flushn privileges;

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 on, centos7 default is firewall,

We can stop it and use it, and then start the familiar iptables, so that's good!

Note: MySQL clients are required to install MySQL client.

1. Close the firewall directly

Systemctl Stop Firewalld.service #停止firewall

Systemctl Disable Firewalld.service #禁止firewall开机启动

2. Set up Iptables service

Yum-y Install Iptables-services

If you want to modify the firewall configuration, such as increasing firewall port 3306

Vi/etc/sysconfig/iptables

Add rule

-A input-m state--state new-m tcp-p TCP--dport 3306-j ACCEPT

After saving exits

Systemctl Restart Iptables.service #重启防火墙使配置生效

Systemctl Enable Iptables.service #设置防火墙开机启动

The final reboot system makes the settings effective.

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

Install MySQL database and set up remote access under CENTOS7 using Yum