我知道这个问题已被问过多次，但我无法在我的计算机上解决它，而且我觉得我已经尝试了一切。
我想使用我机器上的公钥通过 ssh 登录到我的 ubuntu 机器 - 这样我就不必输入密码了。
我总是总是总是得到permission denied (publickey)
我已经创建了具有各种选项的新密钥，但似乎没有什么可以改变这一点。
密码验证工作正常 - 所以我不会被锁定或出现其他问题，但如果可以在我经常使用的计算机上登录，我希望能够使用 SSH 密钥登录。
这是我的日志：
`01 OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
02 debug1: Reading configuration data /etc/ssh_config
03 debug1: /etc/ssh_config line 20: Applying options for *
04 debug1: Connecting to bcs.net.nz [203.167.215.130] port 22.
05 debug1: Connection established.
06 debug1: identity file /Users/jeff/.ssh/id_rsa type 1
07 debug1: identity file /Users/jeff/.ssh/id_rsa-cert type -1
08 debug1: identity file /Users/jeff/.ssh/id_dsa type -1
09 debug1: identity file /Users/jeff/.ssh/id_dsa-cert type -1
10 debug1: Enabling compatibility mode for protocol 2.0
11 debug1: Local version string SSH-2.0-OpenSSH_6.2
12 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
13 debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2 pat OpenSSH*
14 debug1: SSH2_MSG_KEXINIT sent
15 debug1: SSH2_MSG_KEXINIT received
16 debug1: kex: server->client aes128-ctr [email protected] none
17 debug1: kex: client->server aes128-ctr [email protected] none
18 debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
19 debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
20 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
21 debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
22 debug1: Server host key: RSA 3b:2d:96:07:cf:f9:63:82:b1:3f:ae:5d:a0:83:24:84
23 debug1: Host 'bcs.net.nz' is known and matches the RSA host key.
24 debug1: Found key in /Users/jeff/.ssh/known_hosts:1
25 debug1: ssh_rsa_verify: signature correct
26 debug1: SSH2_MSG_NEWKEYS sent
27 debug1: expecting SSH2_MSG_NEWKEYS
28 debug1: SSH2_MSG_NEWKEYS received
29 debug1: Roaming not allowed by server
30 debug1: SSH2_MSG_SERVICE_REQUEST sent
31 debug1: SSH2_MSG_SERVICE_ACCEPT received
32 debug1: Authentications that can continue: publickey
33 debug1: Next authentication method: publickey
34 debug1: Offering RSA public key: /Users/jeff/.ssh/id_rsa
35 debug1: Authentications that can continue: publickey
36 debug1: Trying private key: /Users/jeff/.ssh/id_dsa
37 debug1: Next authentication method: keyboard-interactive
38 debug1: Authentications that can continue: publickey
39 debug1: No more authentication methods to try.
40 Permission denied (publickey,keyboard-interactive).`
~/.ssh/我的客户端机器是 Macbook Air，目录中具有以下权限
-rw------- 1 jeff staff 1675 2 Apr 22:32 id_rsa -rw------- 1 jeff staff 405 2 Apr 22:32 id_rsa.pub -rw------- 1 jeff staff 405 2 Apr 23:39 known_hosts
我的服务器机器上有这些~/.ssh
-rw------- 1 git git 1 Apr 2 23:36 authorized_keys
被id_rsa.pub复制到authorized_keys
我已经束手无策了，因为我尝试了很多种组合:-) 还有什么可以帮助的吗？
======== 添加服务器日志 =======
Apr 3 11:19:16 bcs sshd[19198]: debug1: Forked child 19300.
Apr 3 11:19:16 bcs sshd[19300]: Set /proc/self/oom_score_adj to 0
Apr 3 11:19:16 bcs sshd[19300]: debug1: rexec start in 5 out 5 newsock 5 pipe 7 sock 8
Apr 3 11:19:16 bcs sshd[19300]: debug1: inetd sockets after dupping: 3, 3
Apr 3 11:19:16 bcs sshd[19300]: Connection from 103.26.16.233 port 58988 on 172.16.1.102 port 22
Apr 3 11:19:16 bcs sshd[19300]: debug1: Client protocol version 2.0; client software version OpenSSH_6.2
Apr 3 11:19:16 bcs sshd[19300]: debug1: match: OpenSSH_6.2 pat OpenSSH* compat 0x04000000
Apr 3 11:19:16 bcs sshd[19300]: debug1: Enabling compatibility mode for protocol 2.0
Apr 3 11:19:16 bcs sshd[19300]: debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
Apr 3 11:19:16 bcs sshd[19300]: debug1: permanently_set_uid: 116/65534 [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519 [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_KEXINIT sent [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_KEXINIT received [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: kex: client->server aes128-ctr [email protected] none [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: kex: server->client aes128-ctr [email protected] none [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_NEWKEYS sent [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: expecting SSH2_MSG_NEWKEYS [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: SSH2_MSG_NEWKEYS received [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: KEX done [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: userauth-request for user git service ssh-connection method none [preauth]
Apr 3 11:19:16 bcs sshd[19300]: debug1: attempt 0 failures 0 [preauth]
Apr 3 11:19:17 bcs sshd[19300]: reverse mapping checking getaddrinfo for 103-26-16-233.ufb.ff.net.nz [103.26.16.233] failed - POSSIBLE BREAK-IN ATTEMPT!
Apr 3 11:19:17 bcs sshd[19300]: debug1: userauth-request for user git service ssh-connection method publickey [preauth]
Apr 3 11:19:17 bcs sshd[19300]: debug1: attempt 1 failures 0 [preauth]
Apr 3 11:19:17 bcs sshd[19300]: debug1: test whether pkalg/pkblob are acceptable [preauth]
Apr 3 11:19:17 bcs sshd[19300]: debug1: temporarily_use_uid: 1008/1007 (e=0/0)
Apr 3 11:19:17 bcs sshd[19300]: debug1: trying public key file /root/.ssh/authorized_keys
Apr 3 11:19:17 bcs sshd[19300]: debug1: Could not open authorized keys '/root/.ssh/authorized_keys': Permission denied
Apr 3 11:19:17 bcs sshd[19300]: debug1: restore_uid: 0/0
Apr 3 11:19:17 bcs sshd[19300]: Failed publickey for git from 103.26.16.233 port 58988 ssh2: RSA a3:40:f0:b3:8d:c7:fa:d2:6e:c4:53:93:1b:30:82:92
Apr 3 11:19:17 bcs sshd[19300]: Connection closed by 103.26.16.233 [preauth]
Apr 3 11:19:17 bcs sshd[19300]: debug1: do_cleanup [preauth]
Apr 3 11:19:17 bcs sshd[19300]: debug1: monitor_read_log: child log fd closed
Apr 3 11:19:17 bcs sshd[19300]: debug1: do_cleanup
Apr 3 11:19:17 bcs sshd[19300]: debug1: Killing privsep child 19301
答案1
在服务器的 sshd_config 中检查以下内容
PubkeyAuthentication yes
AuthorizedKeysFile %h/.ssh/authorized_keys
由于某种原因，虽然您尝试使用用户“git”登录，但 sshd 仍尝试打开 /root/.ssh/authorized_keys 文件（来自 sshd 日志），因此它实际上应该读取 /home/git/.ssh/authorized_keys。我怀疑 AuthorizedKeysFile 条目配置错误。通常，AuthorizedKeysFile 条目不需要设置，因为它默认为上述值。
答案2
在服务器上添加此项：
ssh-keygen -t dsa -N "" -f /etc/ssh/ssh_host_dsa_key
ssh-keygen -t rsa -N "" -f /etc/ssh/ssh_host_rsa_key
ssh-keygen -t ecdsa -N "" -f /etc/ssh/ssh_host_ecdsa_key