好的，我已经多次遇到这个问题了，但这是第一次没有常规解决方案奏效。
我有一个运行GitLab的CentOS 6.4服务器。与20多个用户和60多个项目一起工作得很好，但大约5小时前，我的主要分段服务器无法使用密钥身份验证连接到GitLab机器，并提示输入密码。我重新生成了RSA密钥并将其添加到我的部署密钥，但仍然失败。
接下来，我尝试在分段服务器上创建一个新用户，为其创建密钥并将其添加到GitLab，但它仍然失败。
权限:
drwxr-x--- 22 root root 4.0K Oct 28 13:20 root
根目录中：
drwx------ 2 root root 4096 Oct 28 11:49 .ssh
在 .ssh 文件夹内：
-rw------- 1 root root 227 Oct 28 11:48 authorized_keys
-rw------- 1 root root 1675 Oct 28 13:09 id_rsa
-rw------- 1 root root 398 Oct 28 13:09 id_rsa.pub
-rw-r--r-- 1 root root 413 Oct 28 11:49 known_hosts
当我尝试连接到Git机器时：
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to git.mygitlab.com [212.29.122.24] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/id_rsa type 1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: loaded 3 keys
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.3
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'git.mygitlab.com' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with- mic,password
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Next authentication method: publickey
debug1: Offering public key: /root/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with- mic,password
debug1: Trying private key: /root/.ssh/identity
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Next authentication method: password
git@git.mygitlab.com's password:
.ssh/authorized_keys中。
我不知道该尝试什么:(
git.mygitlab.com:~git/.ssh/authorized_keys中看到你的公钥吗？ - VonC