從 OS X 到 Ubuntu 的權限被拒絕（Publickey）

我知道這個問題已經被問了好幾次了，但是我無法在我的機器上解決它，我覺得我已經嘗試了所有方法。

我想使用我機器上的公鑰通過 ssh 登錄到我的 ubuntu 機器——這樣我就不必輸入密碼了。

我總是總是得到permission denied (publickey)

我已經創建了具有各種選項的新密鑰，但似乎沒有任何改變。

密碼身份驗證工作正常 - 所以我沒有被鎖定或任何東西，但如果我可以在我經常使用的電腦上，我希望能夠使用 SSH 密鑰登錄。

這是我的日誌：

`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 hmac-md5-etm@openssh.com none
17 debug1: kex: client->server aes128-ctr hmac-md5-etm@openssh.com 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).`

我的客戶端機器是Macbook Air，在~/.ssh/目錄中具有以下權限

-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

我的伺服器機器中有這些~/.ssh

-rw------- 1 git git 1 Apr 2 23:36 authorized_keys

被id_rsa.pub複製到authorized_keys

我束手無策，因為我嘗試了這麼多組合:-) 還有什麼可以幫助的嗎？

======== 添加伺服器日誌 =======

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 hmac-md5-etm@openssh.com none [preauth]
Apr  3 11:19:16 bcs sshd[19300]: debug1: kex: server->client aes128-ctr hmac-md5-etm@openssh.com 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

在伺服器的 sshd_config 中檢查以下內容

PubkeyAuthentication yes
AuthorizedKeysFile     %h/.ssh/authorized_keys

出於某種原因，您的 sshd 正在嘗試打開 /root/.ssh/authorized_keys 文件（來自您的 sshd 日誌），儘管您嘗試使用使用者“git”登錄，所以它實際上應該讀取 /home/git/.ssh/授權密鑰。我懷疑 AuthorizedKeysFile 條目配置錯誤。通常，不需要設置 AuthorizedKeysFile 條目，因為它預設為上述值。

在伺服器上添加：

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

引用自：https://serverfault.com/questions/680163