尽管在代理中添加了身份，但无法使用 SourceTree 推送到 github：权限被拒绝（公钥）
Can't push to github with SourceTree despite having identity added in agent: Permission denied (publickey)
如果我 运行 ssh-add -l 我按预期在列表中看到了我的身份。如果我 运行 ssh -vT git@github.com 我得到这个输出：
OpenSSH_7.9p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/myself/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug1: Connecting to github.com [140.82.113.4] port 22.
debug1: Connection established.
debug1: identity file /Users/myself/.ssh/id_rsa type -1
debug1: identity file /Users/myself/.ssh/id_rsa-cert type -1
debug1: identity file /Users/myself/.ssh/id_dsa type -1
debug1: identity file /Users/myself/.ssh/id_dsa-cert type -1
debug1: identity file /Users/myself/.ssh/id_ecdsa type -1
debug1: identity file /Users/myself/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/myself/.ssh/id_ed25519 type -1
debug1: identity file /Users/myself/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/myself/.ssh/id_xmss type -1
debug1: identity file /Users/myself/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.9
debug1: Remote protocol version 2.0, remote software version babeld-849b9b5f
debug1: no match: babeld-849b9b5f
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
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 /Users/myself/.ssh/known_hosts:1
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: Will attempt key: Generated by Sourcetree on macOS for myself-GitHub RSA SHA256:WnUQPEasG3tUVyEkE7Ufo9fGoRqCdUeY9ohZ7OU6fsc agent
debug1: Will attempt key: /Users/myself/.ssh/id_rsa
debug1: Will attempt key: /Users/myself/.ssh/id_dsa
debug1: Will attempt key: /Users/myself/.ssh/id_ecdsa
debug1: Will attempt key: /Users/myself/.ssh/id_ed25519
debug1: Will attempt key: /Users/myself/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,rsa-sha2-512,rsa-sha2-256,ssh-dss>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: Generated by Sourcetree on macOS for myself-GitHub RSA SHA256:WnUQPEasG3tUVyEkE7Ufo9fGoRqCdUeY9ohZ7OU6fsc agent
debug1: Server accepts key: Generated by Sourcetree on macOS for myself-GitHub RSA SHA256:WnUQPEasG3tUVyEkE7Ufo9fGoRqCdUeY9ohZ7OU6fsc agent
debug1: Authentication succeeded (publickey).
Authenticated to github.com ([140.82.113.4]:22).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: pledge: network
debug1: Sending environment.
debug1: Sending env LC_TERMINAL_VERSION = 3.3.8
debug1: Sending env LANG = en_US.UTF-8
debug1: Sending env LC_TERMINAL = iTerm2
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
Hi myself! You've successfully authenticated, but GitHub does not provide shell access.
debug1: channel 0: free: client-session, nchannels 1
Transferred: sent 3564, received 2484 bytes, in 0.2 seconds
Bytes per second: sent 18846.5, received 13135.4
debug1: Exit status 1
我仍然无法将代码推送到 github，尽管在此调试输出中收到 You've successfully authenticated 消息，SSH 身份由 SourceTree 本身生成，并确保我的 SSH 代理是 运行通过做 eval "$(ssh-agent)".
我还可以在我的 github 配置文件中看到预期的密钥。
这里有什么问题？
my SSH Agent is running by doing eval "$(ssh-agent)".
这可能是问题所在。 ssh 知道通过 SSH_AUTH_SOCK 环境变量与 ssh-agent 对话。环境变量仅对进程及其子进程可见。
eval "$(ssh-agent)" 仅为此 shell 及其子项设置 SSH_AUTH_SOCK ；那就是你 运行 从那个 shell 中得到的任何东西。如果你然后 运行 git 在这个 shell 它应该工作。但是如果你有一些独立的程序不是从这个 shell 启动的，比如 Atlassian Sourcetree，当它 运行s ssh 时它不会知道与那个 ssh-agent 交谈。
您可以从 shell 启动 Sourcetree，但这不是一个很好的解决方案。
要解决此问题以及许多其他与 ssh 相关的问题，请在登录时启动 ssh-agent。这应该由您的操作系统为您完成，或者如果没有，请按照您的操作系统的说明进行操作。否则，follow the advice in the various answers here.
如果我 运行 ssh-add -l 我按预期在列表中看到了我的身份。如果我 运行 ssh -vT git@github.com 我得到这个输出：
OpenSSH_7.9p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/myself/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 48: Applying options for *
debug1: Connecting to github.com [140.82.113.4] port 22.
debug1: Connection established.
debug1: identity file /Users/myself/.ssh/id_rsa type -1
debug1: identity file /Users/myself/.ssh/id_rsa-cert type -1
debug1: identity file /Users/myself/.ssh/id_dsa type -1
debug1: identity file /Users/myself/.ssh/id_dsa-cert type -1
debug1: identity file /Users/myself/.ssh/id_ecdsa type -1
debug1: identity file /Users/myself/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/myself/.ssh/id_ed25519 type -1
debug1: identity file /Users/myself/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/myself/.ssh/id_xmss type -1
debug1: identity file /Users/myself/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.9
debug1: Remote protocol version 2.0, remote software version babeld-849b9b5f
debug1: no match: babeld-849b9b5f
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
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 /Users/myself/.ssh/known_hosts:1
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: Will attempt key: Generated by Sourcetree on macOS for myself-GitHub RSA SHA256:WnUQPEasG3tUVyEkE7Ufo9fGoRqCdUeY9ohZ7OU6fsc agent
debug1: Will attempt key: /Users/myself/.ssh/id_rsa
debug1: Will attempt key: /Users/myself/.ssh/id_dsa
debug1: Will attempt key: /Users/myself/.ssh/id_ecdsa
debug1: Will attempt key: /Users/myself/.ssh/id_ed25519
debug1: Will attempt key: /Users/myself/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,rsa-sha2-512,rsa-sha2-256,ssh-dss>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: Generated by Sourcetree on macOS for myself-GitHub RSA SHA256:WnUQPEasG3tUVyEkE7Ufo9fGoRqCdUeY9ohZ7OU6fsc agent
debug1: Server accepts key: Generated by Sourcetree on macOS for myself-GitHub RSA SHA256:WnUQPEasG3tUVyEkE7Ufo9fGoRqCdUeY9ohZ7OU6fsc agent
debug1: Authentication succeeded (publickey).
Authenticated to github.com ([140.82.113.4]:22).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: pledge: network
debug1: Sending environment.
debug1: Sending env LC_TERMINAL_VERSION = 3.3.8
debug1: Sending env LANG = en_US.UTF-8
debug1: Sending env LC_TERMINAL = iTerm2
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
Hi myself! You've successfully authenticated, but GitHub does not provide shell access.
debug1: channel 0: free: client-session, nchannels 1
Transferred: sent 3564, received 2484 bytes, in 0.2 seconds
Bytes per second: sent 18846.5, received 13135.4
debug1: Exit status 1
我仍然无法将代码推送到 github，尽管在此调试输出中收到 You've successfully authenticated 消息，SSH 身份由 SourceTree 本身生成，并确保我的 SSH 代理是 运行通过做 eval "$(ssh-agent)".
我还可以在我的 github 配置文件中看到预期的密钥。
这里有什么问题？
my SSH Agent is running by doing eval "$(ssh-agent)".
这可能是问题所在。 ssh 知道通过 SSH_AUTH_SOCK 环境变量与 ssh-agent 对话。环境变量仅对进程及其子进程可见。
eval "$(ssh-agent)" 仅为此 shell 及其子项设置 SSH_AUTH_SOCK ；那就是你 运行 从那个 shell 中得到的任何东西。如果你然后 运行 git 在这个 shell 它应该工作。但是如果你有一些独立的程序不是从这个 shell 启动的，比如 Atlassian Sourcetree，当它 运行s ssh 时它不会知道与那个 ssh-agent 交谈。
您可以从 shell 启动 Sourcetree，但这不是一个很好的解决方案。
要解决此问题以及许多其他与 ssh 相关的问题，请在登录时启动 ssh-agent。这应该由您的操作系统为您完成，或者如果没有，请按照您的操作系统的说明进行操作。否则，follow the advice in the various answers here.