title: ssh : Permission denied (publickey,gssapi-with-mic)
body: <p>i'm use centos 5.9.
  after installing gitlab by this <a href="https://github.com/zzhgjmh/gitlab-centos/blob/master/gitlab-centos5.9.sh" rel="noreferrer">link</a> ssh not working.
  before install gitlab ssh correctly working.
  i'm using this server localy and other services such as elastix and apache,mysql installed on server.</p>
  
  <p>appeare this error :</p>
  
  <pre><code>OpenSSH_6.9p1 Ubuntu-2ubuntu0.1, OpenSSL 1.0.2d 9 Jul 2015
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: /etc/ssh/ssh_config line 19: Applying options for *
  debug2: ssh_connect: needpriv 0
  debug1: Connecting to 192.168.88.23 [192.168.88.23] 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_6.9p1 Ubuntu-2ubuntu0.1
  debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3
  debug1: match: OpenSSH_4.3 pat OpenSSH_4* compat 0x00000000
  debug2: fd 3 setting O_NONBLOCK
  debug1: Authenticating to 192.168.88.23:22 as 'root'
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-dss-cert-v00@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-dss
  debug2: kex_parse_kexinit: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
  debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  debug2: kex_parse_kexinit: none,zlib@openssh.com
  debug2: kex_parse_kexinit: none,zlib@openssh.com
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: 
  debug2: kex_parse_kexinit: first_kex_follows 0 
  debug2: kex_parse_kexinit: reserved 0 
  debug1: kex: server-&gt;client aes128-ctr hmac-sha1 none
  debug1: kex: client-&gt;server aes128-ctr hmac-sha1 none
  debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024&lt;7680&lt;8192) sent
  debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
  debug2: bits set: 3111/6144
  debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
  debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
  debug1: Server host key: ssh-rsa SHA256:7J6JOe94H9PedNKlx6yG/wMy6ZYC8iB74WdOVGDgY7A
  debug1: Host '192.168.88.23' is known and matches the RSA host key.
      debug1: Found key in /root/.ssh/known_hosts:1
  debug2: bits set: 3102/6144
  debug2: set_newkeys: mode 1
  debug1: SSH2_MSG_NEWKEYS sent
  debug1: expecting SSH2_MSG_NEWKEYS
  debug2: set_newkeys: mode 0
  debug1: SSH2_MSG_NEWKEYS received
  debug1: SSH2_MSG_SERVICE_REQUEST sent
  debug2: service_accept: ssh-userauth
  debug1: SSH2_MSG_SERVICE_ACCEPT received
  debug2: key: /root/.ssh/id_rsa ((nil)),
  debug2: key: /root/.ssh/id_dsa ((nil)),
  debug2: key: /root/.ssh/id_ecdsa ((nil)),
  debug2: key: /root/.ssh/id_ed25519 ((nil)),
  debug1: Authentications that can continue: publickey,gssapi-with-mic
  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
  
  debug2: we did not send a packet, disable method
  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
  debug2: we did not send a packet, disable method
  debug1: No more authentication methods to try.
  Permission denied (publickey,gssapi-with-mic).
  </code></pre>