GitLab在GitLab服务器上对我来说运行良好几个月，然后我更换了系统上的处理器，发现我不再能够登录。我使用的GitHub或其他git服务器没有发生此类问题，但是在这里，我在capistrano部署中遇到了这种情况。
我看到它在对GitLab服务器的第一个git操作上失败，因此我可以在本地shell上将其复制到应该拉低部署的工作站上：
ssh -vv -p 43210 -A username@hostname1.tld 'git ls-remote git@gitlab.hostname2.tld:projects/project_name.git'
它可以很好地进入服务器（hostname1.tld）（例如，如果我发出ls而不是git ls-remote命令，则返回远程服务器目录内容）。但是，当它执行git ls-remote命令时，我看到以下内容：
...
debug1: Authentication succeeded (publickey).
Authenticated to hostname1.tld ([hostname1.tld]:43210).
debug1: setting up multiplex master socket
debug2: fd 4 setting O_NONBLOCK
debug1: channel 0: new [/tmp/username@hostname1.tld:43210]
debug1: channel 1: new [client-session]
debug2: channel 1: send open
debug1: Entering interactive session.
debug1: pledge: id
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug2: channel_input_open_confirmation: channel 1: callback start
debug1: Requesting authentication agent forwarding.
debug2: channel 1: request auth-agent-req@openssh.com confirm 0
debug2: fd 3 setting TCP_NODELAY
debug2: client_session2_setup: id 1
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 1: request env confirm 0
debug1: Sending env LC_TERMINAL = iTerm2
debug2: channel 1: request env confirm 0
debug1: Sending env LC_TERMINAL_VERSION = 3.3
debug2: channel 1: request env confirm 0
debug1: Sending env LC_CTYPE = en_US.UTF-8
debug2: channel 1: request env confirm 0
debug1: Sending command: git ls-remote git@gitlab.hostname2.tld:projects/project_name.git
debug2: channel 1: request exec confirm 1
debug2: channel_input_open_confirmation: channel 1: callback done
debug2: channel 1: open confirm rwindow 0 rmax 32768
debug2: channel 1: rcvd adjust 2097152
debug2: channel_input_status_confirm: type 99 id 1
debug2: exec request accepted on channel 1
debug1: client_input_channel_open: ctype auth-agent@openssh.com rchan 2 win 65536 max 16384
debug2: fd 8 setting O_NONBLOCK
debug1: channel 2: new [authentication agent connection]
debug1: confirm auth-agent@openssh.com
debug2: channel 2: rcvd eof
debug2: channel 2: output open -> drain
debug2: channel 2: obuf empty
debug2: channel 2: chan_shutdown_write (i0 o1 sock 8 wfd 8 efd -1 [closed])
debug2: channel 2: output drain -> closed
debug1: channel 2: FORCE input drain
debug2: channel 2: ibuf empty
debug2: channel 2: send eof
debug2: channel 2: input drain -> closed
debug2: channel 2: send close
debug2: channel 1: rcvd ext data 38
Permission denied, please try again.
debug2: channel 1: written 38 to efd 7
debug2: channel 1: rcvd ext data 38
Permission denied, please try again.
debug2: channel 1: written 38 to efd 7
debug2: channel 1: rcvd ext data 41
Permission denied (publickey,password).
debug2: channel 1: written 41 to efd 7
debug1: client_input_channel_req: channel 1 rtype exit-status reply 0
debug1: client_input_channel_req: channel 1 rtype eow@openssh.com reply 0
debug2: channel 1: rcvd eow
debug2: channel 1: chan_shutdown_read (i0 o0 sock -1 wfd 5 efd 7 [write])
debug2: channel 1: input open -> closed
debug2: channel 1: rcvd ext data 126
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
在GitLab服务器本身（hostname2.tld）上，将ssh日志记录设置为DEBUG，可以在auth.log中看到以下内容：
gitlab sshd[8053]: debug1: Forked child 8075.
gitlab sshd[8075]: debug1: Set /proc/self/oom_score_adj to 0
gitlab sshd[8075]: debug1: rexec start in 5 out 5 newsock 5 pipe 7 sock 8
gitlab sshd[8075]: debug1: inetd sockets after dupping: 3, 3
gitlab sshd[8075]: Connection from hostname1.tld port 38412 on hostname2.tld port 22
gitlab sshd[8075]: debug1: Client protocol version 2.0; client software version OpenSSH_7.4
gitlab sshd[8075]: debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000
gitlab sshd[8075]: debug1: Enabling compatibility mode for protocol 2.0
gitlab sshd[8075]: debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.8
gitlab sshd[8075]: debug1: permanently_set_uid: 108/65534 [preauth]
gitlab sshd[8075]: debug1: list_hostkey_types: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519 [preauth]
gitlab sshd[8075]: debug1: SSH2_MSG_KEXINIT sent [preauth]
gitlab sshd[8075]: debug1: SSH2_MSG_KEXINIT received [preauth]
gitlab sshd[8075]: debug1: kex: algorithm: curve25519-sha256@libssh.org [preauth]
gitlab sshd[8075]: debug1: kex: host key algorithm: ecdsa-sha2-nistp256 [preauth]
gitlab sshd[8075]: debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none [preauth]
gitlab sshd[8075]: debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none [preauth]
gitlab sshd[8075]: debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth]
gitlab sshd[8075]: debug1: rekey after 134217728 blocks [preauth]
gitlab sshd[8075]: debug1: SSH2_MSG_NEWKEYS sent [preauth]
gitlab sshd[8075]: debug1: expecting SSH2_MSG_NEWKEYS [preauth]
gitlab sshd[8075]: debug1: SSH2_MSG_NEWKEYS received [preauth]
gitlab sshd[8075]: debug1: rekey after 134217728 blocks [preauth]
gitlab sshd[8075]: debug1: KEX done [preauth]
gitlab sshd[8075]: debug1: userauth-request for user git service ssh-connection method none [preauth]
gitlab sshd[8075]: debug1: attempt 0 failures 0 [preauth]
gitlab sshd[8075]: debug1: PAM: initializing for "git"
gitlab sshd[8075]: debug1: PAM: setting PAM_RHOST to "hostname1.tld"
gitlab sshd[8075]: debug1: PAM: setting PAM_TTY to "ssh"
gitlab sshd[8075]: debug1: userauth-request for user git service ssh-connection method password [preauth]
gitlab sshd[8075]: debug1: attempt 1 failures 0 [preauth]
gitlab sshd[8075]: Failed none for git from hostname1.tld port 38412 ssh2
gitlab sshd[8075]: debug1: userauth-request for user git service ssh-connection method password [preauth]
gitlab sshd[8075]: debug1: attempt 2 failures 1 [preauth]
gitlab sshd[8075]: Failed password for git from hostname1.tld port 38412 ssh2
gitlab sshd[8075]: debug1: userauth-request for user git service ssh-connection method password [preauth]
gitlab sshd[8075]: debug1: attempt 3 failures 2 [preauth]
gitlab sshd[8075]: Failed password for git from hostname1.tld port 38412 ssh2
gitlab sshd[8075]: Connection closed by hostname1.tld port 38412 [preauth]
gitlab sshd[8075]: debug1: do_cleanup [preauth]
gitlab sshd[8075]: debug1: monitor_read_log: child log fd closed
gitlab sshd[8075]: debug1: do_cleanup
gitlab sshd[8075]: debug1: PAM: cleanup
gitlab sshd[8075]: debug1: Killing privsep child 8076
gitlab sshd[8075]: debug1: audit_event: unhandled event 12
似乎失败，并显示此错误Failed password for git。
在此部署之前，没有任何密码就发生了，因为我认为由于我的密钥似乎已正确存储在我的用户的GitLab中，所以这是通过ssh传递的，但是现在正在发生这种情况。
这是怎么了？