Is there any query/way to show the last queries executed on ALL servers?
You can do the flowing thing for monitoring mysql query logs.
Open mysql configuration file my.cnf
sudo nano /etc/mysql/my.cnf
Search following lines under a [mysqld] heading and uncomment these lines to enable log
general_log_file = /var/log/mysql/mysql.log
general_log = 1
Restart your mysql server for reflect changes
sudo service mysql start
Monitor mysql server log with following command in terminal
tail -f /var/log/mysql/mysql.log