Lord of the Pings

A friend got an email from Amazon signed:

"Best regards, 

Aragorn
Amazon Web Services"

So I wrote a poem:

All that’s on hold is not bitter,
Not every caller is lost;
The password so strong is no quitter,
Root login protect at all cost. 

From sleep the VMs shall be woken
A light from the LEDs springs
Restart all the Blades with ring tokens
The cloud will respond to all pings