Use ssh on multiple servers simultaneous
If you have many servers to manage and want to perform the same tasks on each of the machine every day, then you should look at the package named clusterssh.
Install the clusterssh package
apt-get install clusterssh
Perform the same command on the three servers server1 server2 and server3
cssh server1 server2 server3
This opens three ssh consoles, one for each server, and a little console for you to type your commands.