Solution: Under CentOS 7 yum install mysql-server package is available without a problem

Problem:
[root @ Master ~] # yum install MySQL-Server
is loaded plugins: fastestmirror
Loading Mirror SPEEDS from cached hostfile

• base: ap.stykers.moe
• extras: ap.stykers.moe
• updates: ap.stykers.moe
  not available package mysql-server.
  Error: without any processing
  solution:
  [root @ Master ~] # yum -y install wget
  [root @ Master ~] # wget http://repo.mysql.com/mysql-community-release-el7-5.noarch. RPM
  [the root Master @ ~] # RPM -ivh MySQL-Community-Release-el7-5.noarch.rpm
  [the root Master @ ~] -1 /etc/yum.repos.d/mysql-community* LS #
  [the root @ master ~] # yum install mysql- server

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