Comment 0 for bug 1408540

$ yum install -y Percona-Server-client-55 Percona-Server-server-55

[....]
Importing GPG key 0xCD2EFD2A "Percona MySQL Development Team <email address hidden>" from /etc/pki/rpm-gpg/RPM-GPG-KEY-Percona
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : Percona-Server-shared-55 1/5
  Installing : perl 2/5
  Installing : Percona-Server-client-55 3/5
  Installing : libaio 4/5
Error in my_thread_global_end(): 1 threads didn't exit <---------------------------------- (!)
Error in my_thread_global_end(): 1 threads didn't exit <---------------------------------- (!)
  Installing : Percona-Server-server-55 5/5
PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'
/usr/bin/mysqladmin -u root -h 7882ce509f35 password 'new-password'