Currently I have to unlock may ssh key each session. How can I add ssh key password to my default gnome keyring?
Check if you have
AddKeysToAgent yes option in your
Then if you have
gnome-keyring-daemon and its
ssh-agent running (and pointed to appropriate socket: the same as SSH_AUTH_SOCK env) then it should ask you "graphically" for passphrase at first use. There should also be a checkbox allowing you to "Automatically unlock this key whenever I'm logged in", which stores the passphrase in the "login" keyring and is exactly what you want. If it doesn't ask for unlocking passphrase with graphical requester, chances are that
$ ps ax | grep keyring
will show you that daemon or agent is not running. You can check if the agent is enabled in
Startup Applications. On my machine it shows "SSH Key Agent" with description "GNOME Keyring: SSH Agent".