2021 CentOS 6.8 install MySQL 5.5
One-off! Centos6.8 perfect installation of mysql 5.5
Mysql
2021 CentOS 6.8 install MySQL 5.6
Since CentOS officially abandoned the maintenance and update of CentOS 6.x and removed all the updates and packages, we need to use Alibaba Cloud Source to install
Mysql creates sub-database and sub-table
Whether it is an IO bottleneck or a CPU bottleneck, it will eventually lead to an increase in the number of active connections to the database, which will then approach or even reach the threshold of the number of active connections that the database can carry. From the perspective of business Service, there are few or no connections available to the database
