Git权限被拒绝（公钥，gssapi-keyex，gssapi-with-mic）？

Question

客户端：操作系统Ubuntu，git版本2.7.4。

服务器：OS Centos，git版本2.7.4。

我的客户端中有一个ssh私钥，服务器中有一个公钥。

我可以使用shell输入我的服务器（无密码）。

但是不能推原籍！

sudo ssh -i / path / to / key / -vT git@xxx.xx.xxx.xxx OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, 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 xxx.xx.xxx.xxx [xxx.xx.xxx.xxx] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /home/whj/.ssh/whjwebsite type 1 debug1: key_load_public: No such file or directory debug1: identity file /home/whj/.ssh/whjwebsite-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1 debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000 debug1: Authenticating to xxx.xx.xxx.xxx: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: ecdsa-sha2-nistp256 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: ecdsa-sha2-nistp256 SHA256:aC1Ydp+6x8IP+TV5jEl7WwqW6sEycbznbfL09qON/OA debug1: Host 'xxx.xx.xxx.xxx' is known and matches the ECDSA 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_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/whj/.ssh/whjwebsite debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-debug1: No more authentication methods to try. Permission denied (publickey,gssapi-keyex,gssapi-with-mic). OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, 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 xxx.xx.xxx.xxx [xxx.xx.xxx.xxx] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /home/whj/.ssh/whjwebsite type 1 debug1: key_load_public: No such file or directory debug1: identity file /home/whj/.ssh/whjwebsite-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1 debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000 debug1: Authenticating to xxx.xx.xxx.xxx: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: ecdsa-sha2-nistp256 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: ecdsa-sha2-nistp256 SHA256:aC1Ydp+6x8IP+TV5jEl7WwqW6sEycbznbfL09qON/OA debug1: Host 'xxx.xx.xxx.xxx' is known and matches the ECDSA 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_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information No Kerberos credentials available debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/whj/.ssh/whjwebsite debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-debug1: No more authentication methods to try. Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

“ whjwebsite”是我的私钥。

drwx ------ .ssh /

-rw ------- whjwebsite

服务器：sshd_config：

```RSAAuthentication是PubkeyAuthentication是GSSAPIAuthentication是GSSAPICleanupCredentials否UseDNS否AddressFamily inet PermitRootLogin是SyslogFacility AUTHPRIV PasswordAuthentication否ChallengeResponseAuthentication否

客户端：ssh_config

在此处输入图片说明

Answer 1

我的2分钱：在服务器端，禁用GSSAPIAuthentication （即由Kerberos支持的SSO），除非您在公司防火墙内的Linux上使用Active Directory身份验证（通过Centrify或SSSD）。

如果您确实处于SSO场景中，但由于某些原因单点登录无法立即使用，请使用客户端选项绕过Kerberos，例如

ssh -o GSSAPIAuthentication=no -o GSSAPIKeyExchange=no