Git keeps asking me for my ssh key passphrase

Question

I created keys as instructed in the github tutorial, registered them with github, and tried using ssh-agent explicitly — yet git continues to ask me for my passphrase every time I try to do a pull or a push.

What could be the cause?

Answer 1

Once you have started the SSH agent with:

eval $(ssh-agent) 

Do either:

1. To add your private key to it:

    ssh-add 

   This will ask you your passphrase just once, and then you should be allowed to push, provided that you uploaded the public key to Github.

2. To add and save your key permanently on macOS:

    ssh-add -K   

   This will persist it after you close and re-open it by storing it in user's keychain.

3. To add and save your key permanently on Ubuntu (or equivalent):

     ssh-add ~/.ssh/id_rsa 

Answer 2

This has been happening to me after restarts since upgrading from OS X El Capitan (10.11) to macOS Sierra (10.12). The ssh-add solution worked temporarily but would not persist across another restart.

The permanent solution was to edit (or create) ~/.ssh/config and enable the UseKeychain option.

Host *     UseKeychain yes 

Related: macOS keeps asking my ssh passphrase since I updated to Sierra