Comment 1 for bug 1388122

  Here is how I see the issue
  - innobackupex uses DBD::MySQL to talk to MySQL Server
  - DBD::MySQL relies on libmysqlclient shipped with MySQL
  - .mylogin.cnf support is built into libmysqlclient, this file is
    always read
  - in order to properly support .mylogin.cnf
    - DBD::MySQL must be linked with correct version of libmysqlclient
    - DBD::MySQL must provide an option to specify "--load-path"
    - innobackupex must support "--load-path" option
    - libmysqlclient must expose API to set "--load-path" value,
      currently it only can be read from command line

  I suggest first to check which version of libmysqlclient used by
  DBD::MySQL on CentOS 6.