title: Git Permission denied (publickey,gssapi-keyex,gssapi-with-mic)?
body: <p>Client: OS Ubuntu, git-version 2.7.4.</p>
  
  <p>Server: OS Centos , git-version 2.7.4.</p>
  
  <p>I have a private ssh key in my client and public key in server.</p>
  
  <p>I can use shell to enter my server(no password).</p>
  
  <p>But can't push origin master !</p>
  
  <p><strong>sudo ssh -i /path/to/key/ -vT git@xxx.xx.xxx.xxx</strong>
  <code>
  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-&gt;client cipher: chacha20-poly1305@openssh.com MAC: &lt;implicit&gt; compression: none 
  debug1: kex: client-&gt;server cipher: chacha20-poly1305@openssh.com MAC: &lt;implicit&gt; 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).
  </code></p>
  
  <p>'whjwebsite 'is my private key.</p>
  
  <p>drwx------ .ssh/</p>
  
  <p>-rw-------  whjwebsite</p>
  
  <p><strong>server:sshd_config:</strong></p>
  
  <p>```
  RSAAuthentication yes
  PubkeyAuthentication yes
  GSSAPIAuthentication yes
  GSSAPICleanupCredentials no
  UseDNS no
  AddressFamily inet
  PermitRootLogin yes
  SyslogFacility AUTHPRIV
  PasswordAuthentication no
  ChallengeResponseAuthentication no</p>
  
  <p><strong>client:ssh_config</strong></p>
  
  <p><a href="https://i.stack.imgur.com/uWTWG.png" rel="nofollow noreferrer">enter image description here</a></p>