Solution Agent admitted failure to sign using the key problem with SSH

Configuring SSH

Before installing SSH on this machine, you can install it via sudo apt-get install SSH or via new. If it is not configured, logging on to the local computer or the remote host requires a password for that host. Below is a password-free login configuration:

Very simple, execute ssh-keygen-t RSA command, all the way to enter the line, just in the. SSH folder generates 2 files, a public key and a private key file, Id_rsa Id_rsa.pub, and then executes the CP ~/.ssh/id_rsa.pub ~/.ssh/ Authorized_keys command. This configuration allows you to log on to the machine without password. If you need to log on to a remote host, simply send the Authorized_keys file to the remote host's ~/.ssh/directory.

Now SSH uses the same method will be the wrong message Agent admitted failure to sign using the key

The solution uses the ssh-add instruction to add the private key (according to the individual's key name different change id_rsa)
# Ssh-add ~/.ssh/id_rsa

By SSH host name can be implemented without password login.