SSH到Docker：权限被拒绝（publickey）
我运行一个docker集装箱，并希望使用emacs的tramp软件包ssh。 我可以成功地使用docker exec -it containername bash 。 但我只是想用我的emacs做configuration工作。 我已经将容器的端口22暴露给本地主机端口22。
顺便说一句，我有我的.ssh文件夹id_rsa 。
但是，即使我使用ssh -p 22 dwolf@localhost它仍然不起作用。 日志如下：
OpenSSH_7.4p1, LibreSSL 2.5.0 debug1: Reading configuration data /Users/spacegoing/.ssh/config debug1: /Users/spacegoing/.ssh/config line 26: Applying options for * debug1: Reading configuration data /etc/ssh/ssh_config debug1: Connecting to localhost [::1] port 22. debug1: connect to address ::1 port 22: Connection refused debug1: Connecting to localhost [127.0.0.1] port 22. debug1: Connection established. debug1: identity file /Users/spacegoing/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /Users/spacegoing/.ssh/id_rsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.4 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.0p1 Debian-4+deb7u3 debug1: match: OpenSSH_6.0p1 Debian-4+deb7u3 pat OpenSSH* compat 0x04000000 debug1: Authenticating to localhost:22 as 'dwolf' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: ecdh-sha2-nistp256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: aes128-ctr MAC: umac-64@openssh.com compression: none debug1: kex: client->server cipher: aes128-ctr MAC: umac-64@openssh.com compression: none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:w7Y3BsQ1xof3U5cohsL5y9ctWvgNaTuXdbDFwQtE+Gc debug1: Host 'localhost' is known and matches the ECDSA host key. debug1: Found key in /Users/spacegoing/.ssh/known_hosts:26 debug1: rekey after 4294967296 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey after 4294967296 blocks debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/spacegoing/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey).
这三行：
debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/spacegoing/.ssh/id_rsa debug1: Authentications that can continue: publickey
显示你提供了一个公钥，但是它被拒绝了; 您不在目标主机的authorized_keys文件中。
要将您的公钥复制到泊坞窗图像中，您可以使用此打字机，当然，还有许多其他方法可将密钥复制到机器中。
dd if=~/.ssh/id_rsa.pub | docker exec -it containername dd of=~/.ssh/authorized_keys
然而正如有人指出的那样，你的容器应该尽可能小，理想上甚至不需要自己的SSH服务器; 但是，每个人的用例都不一样。
该命令将覆盖目标上的任何现有授权密钥
看这条线：
debug1: identity file /Users/spacegoing/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory
它看起来像你没有id_rsa键在你的设备和时间
debug1: Next authentication method: publickey
它不能find它并退出，请尝试添加以下命令的这个键：
cd ~/.ssh/ ssh-keygen id_rsa
然后点击input所有问题并重复您的连接。