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This article shares the detailed steps of installing mysql5.7 under centOS for your reference. The details are as follows

Step one:

The first sentence checks whether the system has its own installation mysql, and if it executes the second sentence to delete the system's own mysql and its dependencies.

Yum list installed | grep mysqlyum-y remove mysql-libs.x86_64

Step 2:

To add a rpm source to CentOS and select a newer source, the following code executes step by step

Wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpmyum localinstall mysql-community-release-el6-5.noarch.rpmyum repolist all | grep mysqlyum-config-manager-- disable mysql55-communityyum-config-manager-- disable mysql56-communityyum-config-manager-- enable mysql57-community-dmryum repolist enabled | grep mysql

Step 3:

Install the mysql server

Yum install mysql-community-server

Step 4:

Service mysqld start

Step 5:

Check whether mysql is self-starting, and set to enable self-startup.

Chkconfig-- list | grep mysqldchkconfig mysqld on

Step 6:

This step is very important!

Do not know from which version of mysql, the mysql root default password is not empty, during the installation process, the default password is saved in the installation log. We need to find the default password through the installation log. Logging in to mysql with the default password will force you to change the password. The modified password has to be complex enough (the default password policy for compound mysql) to change successfully, usually with uppercase and lowercase letters, special characters and numbers that exceed 8 characters.

First find the installation log

Find /-name mysqld.log

Then the path to the log file is found in / var/log/mysqld.log. Then open it with the following command and press the'i' key to scroll up

Vim / var/log/mysqld.log

The red spot above is where the root password is located.

Step 7:

Mysql Security Settings

Mysql_secure_installation

Enter the above command to perform the following steps

SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!In order to log into MySQL to secure it, we'll need the currentpassword for the root user. If you've just installed MySQL, andyou haven't set the root password yet, the password will be blank,so you should just press enter here.Enter current password for root (enter for none):

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