MySQL Cluster 7.2.7 から 7.3.6 へアップデートしたかった

なんかエラーメッセージ見ると、互換性がないから安全性が確保できないので、rpm -Uvh でアップデートはサポートしないよ、と見える。
mysqldump なりなんなりして、一度データベースの内容をファイルに出力してから、全ての mysqlｰ* パッケージを削除してから改めてインストールしてね！と。
やだーそんな怖いことしたくない！ 7.2.x 系か修正され続ける限りそちらで頑張るしかねえな。

A MySQL server package (MySQL-Cluster-server-gpl-7.2.7-1.el6.x86_64) is installed.

Upgrading directly from MySQL 7.2 to MySQL 7.3 may not
be safe in all cases.  A manual dump and restore using mysqldump is
recommended.  It is important to review the MySQL manual's Upgrading
section for version-specific incompatibilities.

A manual upgrade is required.

- Ensure that you have a complete, working backup of your data and my.cnf
  files
- Shut down the MySQL server cleanly
- Remove the existing MySQL packages.  Usually this command will
  list the packages you should remove:
  rpm -qa | grep -i '^mysql-'

  You may choose to use 'rpm --nodeps -ev <package-name>' to remove
  the package which contains the mysqlclient shared library.  The
  library will be reinstalled by the MySQL-Cluster-shared-compat package.
- Install the new MySQL packages supplied by Oracle and/or its affiliates
- Ensure that the MySQL server is started
- Run the 'mysql_upgrade' program

This is a brief description of the upgrade process.  Important details
can be found in the MySQL manual, in the Upgrading section.