ubuntu(ubuntu-14.04, mysql-5.5)

• [删除原有]

  sudo apt-get remove –purge mysql-server-5.5 mysql-client-5.5
  sudo apt-get purge mysql-common
  sudo apt-get autoremove
  sudo apt-get clean

• 安装

  apt-get install mysql-server-5.5 mysql-client-5.5
  

centos

sudo yum install mariadb-server

sudo systemctl start mariadb

常见错误

1. mysql ERROR: 1050 Table 'plugin' already exists

   没有卸载干净，执行上面清理命令

   参考：

   1.  <http://askubuntu.com/questions/86939/error-while-installing-mysql-server-5-1>