Mysql cannot be started after mariadb is installed in CentOS

Yuminstallmysql indicates that mysql installation is complete, but servicemysqlstatus and servicemysqlstart both indicate failure and the database cannot be logged in. [Root @ ansibleflask_sqlalchemy] # servicemysqlstatusRedirectingto/bin/systemctlstatusm

Yum install mysql indicates that mysql installation is complete, but service mysql status and service mysql start indicate failure, and the database cannot be logged in.

[Root @ ansible flask_sqlalchemy] # service mysql status
Redirecting to/bin/systemctl status mysql. service
● Mysql. service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
[Root @ ansible flask_sqlalchemy] # service mysql start
Redirecting to/bin/systemctl start mysql. service
Failed to start mysql. service: Unit mysql. service failed to load: No such file or directory.

[Root @ ansible flask_sqlalchemy] # mysql-u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql. sock' (2)

Solution:

# Yum install mariadb-server-y

# Systemctl start mariadb. service

# Systemctl enable mariadb. service

# Mysql

Reference: http://www.centoscn.com/CentosBug/softbug/2016/0115/6660.html

You can log on to the database, but service mysql still prompts the above error. further analysis is required.