GitLab SSH密钥-权限被拒绝（publickey）

时间：2018-11-11 16:30:01

标签： ssh gitlab ssh-keys

我按照此文档设置了SSH身份验证https://kgcoe-git.rit.edu/help/ssh/README#generating-a-new-ssh-key-pair

它以前曾经工作过，但是这次在新设置上我遇到Permission denied (publickey)错误

下面是ssh命令的调试输出

ankushko@node-0:~/Code$ sudo ssh -vT git@pc3.instageni.utc.edu
OpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to pc3.instageni.utc.edu [150.182.135.23] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /root/.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-4ubuntu2.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to pc3.instageni.utc.edu: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:BUPmhA1nWbH8Zq0cg4uohS3L/Vo4uOZ8PLrdUYf3ano
debug1: Host 'pc3.instageni.utc.edu' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: Trying private key: /root/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).

键

ankushko@node-0:~$ sudo ls ~/.ssh/
authorized_keys  id_rsa  id_rsa.pub  known_hosts

更新：尝试不使用sudo 

ankushko@node-0:~$ ssh -vT git@pc3.instageni.utc.edu
OpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to pc3.instageni.utc.edu [150.182.135.23] port 22.
debug1: Connection established.
debug1: identity file /users/ankushko/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /users/ankushko/.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-4ubuntu2.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to pc3.instageni.utc.edu: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:BUPmhA1nWbH8Zq0cg4uohS3L/Vo4uOZ8PLrdUYf3ano
debug1: Host 'pc3.instageni.utc.edu' is known and matches the RSA host key.
debug1: Found key in /users/ankushko/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /users/ankushko/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Trying private key: /users/ankushko/.ssh/id_dsa
debug1: Trying private key: /users/ankushko/.ssh/id_ecdsa
debug1: Trying private key: /users/ankushko/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).

谢谢。

2 个答案:

答案 0 :(得分：1)

我按照以下步骤解决了git@gitlab.com: Permission denied (publickey)问题：

  1. 运行cat ~/.ssh/id_rsa.pub
  2. 将id_rsa.pub（公共密钥）复制到您的getlab`Setting-> SSH Keys
  3. 运行cat ~/.ssh/id_rsa
  4. 将id_rsa（私钥）复制到`Code_repo-> git_auth-> id_rsa（私钥本地文件）

注意：，如果您在DockerFile中使用root用户或其他任何地方，然后使用sudo su，请在运行上述命令获取root用户之前照顾机器用户公钥和私钥。

答案 1 :(得分：0)

命令：

sudo ssh -vT git@pc3.instageni.utc.edu

以root身份运行，并且将使用/root/.ssh/config和来自同一目录的ssh私钥，例如/root/.ssh/id_rsa。在命令中：

sudo ls ~/.ssh/

外壳（可能为bash）将在其甚至调用~之前将sudo扩展到您的主目录（用sudo echo ~进行证明） ，因此它将显示您主目录中的文件，可能是/home/ankushko。

我能问一下为什么您在sudo上运行这些命令吗？以普通用户身份连接是否可行？这样会更安全，但是有时需要以root身份运行事物。

无论哪种方式，您都需要确保实际使用的ssh私钥与服务器上的ssh公钥匹配。

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