我在GitHub中使用SSH密钥已经有一段时间了。突然我不能推了，我得到了Permission denied (publickey) error.，这是我到目前为止尝试过的：

• 已检查ssh密钥是否位于正确的目录(~/.ssh)
• 尝试将我的公钥重新上传到GitHub(我收到密钥已经存在的消息)
• 仔细检查系统上ssh-add -l -E sha256的输出是否与我在GitHub帐户上的ssh设置中的字符串一致
• 已按照GitHub文档的“故障排除ssh”部分中的所有步骤进行操作。(一切似乎都像古驰)
• 我的头撞墙了一个小时

到目前为止，任何事情都没有帮助。这是我最后的手段。如有任何建议，我将不胜感激。以下是我的ssh -vT git@github.com的输出

OpenSSH_7.2p2 Ubuntu-4ubuntu2.10, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /home/MY_USER_NAME/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to github.com [140.82.114.3] port 22.
debug1: Connection established.
debug1: identity file /home/MY_USER_NAME/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/MY_USER_NAME/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.10
debug1: Remote protocol version 2.0, remote software version babeld-fb957b4d
debug1: no match: babeld-fb957b4d
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: rsa-sha2-512
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-rsa SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8
debug1: Host 'github.com' is known and matches the RSA host key.
debug1: Found key in /home/MY_USER_NAME/.ssh/known_hosts:4
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp256-cert-v01@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ssh-dss>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/MY_USER_NAME/.ssh/id_rsa
debug1: Server accepts key: pkalg rsa-sha2-512 blen 279
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/MY_USER_NAME/.ssh/id_dsa
debug1: Trying private key: /home/MY_USER_NAME/.ssh/id_ecdsa
debug1: Trying private key: /home/MY_USER_NAME/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).

**更新：**我在另一个GitHub帐户上遇到了相同的问题，该帐户具有不同的密钥集。同一台电脑。