Install Guide

http://dev.mysql.com/doc/refman/5.6/en/linux-installation-yum-repo.html

$ service mysqld start

$ ps ax | grep mysql
 4396 ?        Ss     0:00 /bin/bash /usr/bin/mysql-systemd-start post
 5160 pts/2    S+     0:00 /bin/systemctl start mysqld.service

$ mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

After you installed MySQL-community-server 5.7 from fresh on linux, you will need to find the temporary password from /var/log/mysqld.log to login as root.

grep ‘temporary password’ /var/log/mysqld.log
Run mysql_secure_installation to change new password

When running into error 13 or 12, change SELinux and re-install

SE Linux

http://wiki.centos.org/HowTos/SELinux

$ yum remove mysql spullen

$ sestatus

$ edit se linux configuration to disable SELinux

$ yum -y install mysql-community-server

$ service mysqld start

$ ps ax | grep mysql
 14059 ?        Ss     0:00 /bin/sh /usr/bin/mysqld_safe
14208 ?        Sl     0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock
14294 pts/0    S+     0:00 mysql
14585 pts/1    S+     0:00 grep --color=auto mysql