I have keys setup between two machines. When I ssh in to the first machine, it goes straight in without me having to type my password because I have my key as an authorized key.
Now, that machine that I ssh'ed in to also has its key authorized in the next machine I'm about to SSH in to, however it asks me:
Enter passphrase for key '/home/owner/.ssh/id_rsa'
Why do I need to enter the passphrase, and how can I avoid this?