Every time you want to use ssh, macOS asks you your passphrase? This is the fix.
Since Sierra (macOS), I've got this annoying question when I want to connect to a server via ssh:
1$ ssh kud.io2Enter passphrase for key '/Users/kud/.ssh/id_rsa':
It asks you your passphrase.
Ugh? Usually it is saved in Keychain. But it doesn't work anymore.
However, there's a solution not to have to
$ ssh-add -K every time you start a shell and want to connect with ssh.
Just add these lines to your
~/.ssh/config line and it forces the SSH daemon to use Keychain.
1Host *2 UseKeychain yes3 AddKeysToAgent yes
The reason is that the latest updates comes bundled with an updated OpenSSH package that changes some default behaviour.
1Prior to macOS Sierra, ssh would present a dialog asking for your passphrase and2would offer the option to store it into the keychain. This UI was deprecated3some time ago and has been removed. Instead, a new UseKeychain option was4introduced in macOS Sierra allowing users to specify whether they would like for5the passphrase to be stored in the keychain. This option was enabled by default6on macOS Sierra, which caused all passphrases to be stored in the keychain. This7was not the intended default behavior, so this has been changed in macOS810.12.2. OpenSSH updates in macOS 10.12.2