Add ssh upon login.
Install keychain
.
sudo apt-get install keychain
Add to ~/.bashrc
:
eval $(keychain --eval id_rsa)
If you want to silence it completely
eval $(keychain --eval id_rsa >/dev/null 2>&1)
If you would like to redirect the output to logs:
https://stackoverflow.com/questions/2292847/how-to-silence-output-in-a-bash-script