1. 连接mysql遇到 Can‘t connect to local MySQL server through socket ‘/tmp/mysql.sock‘ (2)，mysql没有正常启动
$ mysql.server start
出处: https://stackoverflow.com/questions/22436028/cant-connect-to-local-mysql-server-through-socket-tmp-mysql-sock-2/25515367
原文：http://www.cnblogs.com/mengff/p/7350983.html