【问题标题】:Git always prompts "Are you sure you want to continue connecting (yes/no/[fingerprint])?"Git 总是提示“你确定要继续连接吗(是/否/[指纹])?”
【发布时间】:2020-12-19 00:34:43
【问题描述】:

我在 ~/.config/ssh 中设置了 ssh,而不是默认的 ~/.ssh

每次我执行git pullgit push 时,都会收到以下消息:

The authenticity of host 'github.com (192.30.255.112)' can't be established.
RSA key fingerprint is SHA256:....
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/Users/username/.ssh/known_hosts).

输入yes后,下一步添加主机到known_hosts失败,但操作(git pullgit push)成功完成。

操作完成后没有~/.ssh(因此也没有~/.ssh/known_hosts)。

我已知的 hosts 文件的位置是:~/.config/ssh/known_hosts

我已经完成了:

ssh -o UserKnownHostsFile=~/.config/ssh/known_hosts -T git@github.com

eval $(ssh-agent)
ssh-add -K ~/.config/ssh/id_rsa

还使用 pbcopy < ~/.config/ssh/id_rsa.pub 将 SSH 密钥添加到我的 github 配置文件中。

~/.config/ssh/config的内容:

Host *
  AddKeysToAgent yes
  UseKeychain yes
  IdentityFile ~/.config/ssh/id_rsa

~/.config/ssh/known_hosts的内容:

github.com,192.30.255.112 ssh-rsa ...
...
...==
192.30.255.113 ssh-rsa ...
...
...==

~/.config/ssh的文件权限:

drwxr-xr-x  6 username  staff   192 Aug 29 19:12 .
drwxr-xr-x  7 username  staff   224 Aug 29 16:17 ..
-rw-r--r--  1 username  staff    83 Aug 29 19:01 config
-rw-------  1 username  staff  3434 Aug 29 19:00 id_rsa
-rw-r--r--  1 username  staff   747 Aug 29 19:00 id_rsa.pub
-rw-r--r--  1 username  staff   803 Aug 29 19:31 known_hosts

编辑

执行ssh -o UserKnownHostsFile=$HOME/.config/ssh/known_hosts git@github.com 给出:

git@github.com: Permission denied (publickey)

如何避免在每个 git pullgit push 中输入“是”?

【问题讨论】:

  • 您不必指定主机文件路径,而且您的 shell 可能不会扩展波浪号,因为它位于字符串的中间。接受后主机密钥是否显示在您的 known_hosts 文件中?
  • @StephenNewell 不,它没有。输入 yes 后,拉/推操作继续(参见第一个代码块)。没有~/.ssh 目录(里面也没有known_hosts 文件)。
  • 抱歉,在您的问题中错过了这一点。检查文件的权限。
  • 我已经添加了目录的文件权限。请看一看。
  • 正如@StephenNewell 所说,ssh -o UserKnownHostsFile=~/.config/ssh/known_hosts 正在离开波浪号未扩展。您的 ssh 可能无法处理(例如,我 Mac 上的 ssh 没有)。使用$HOME 而不是~ 以便将其展开。

标签: git macos ssh


【解决方案1】:

按照this GitHub 页面上的说明,我执行了命令ssh -vT git@github.com

它给出了以下输出:

OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: Connecting to github.com port 22.
debug1: Connection established.
debug1: identity file /Users/saurabh/.ssh/id_rsa type -1
debug1: identity file /Users/saurabh/.ssh/id_rsa-cert type -1
debug1: identity file /Users/saurabh/.ssh/id_dsa type -1
debug1: identity file /Users/saurabh/.ssh/id_dsa-cert type -1
debug1: identity file /Users/saurabh/.ssh/id_ecdsa type -1
debug1: identity file /Users/saurabh/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/saurabh/.ssh/id_ed25519 type -1
debug1: identity file /Users/saurabh/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/saurabh/.ssh/id_xmss type -1
debug1: identity file /Users/saurabh/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.1
debug1: Remote protocol version 2.0, remote software version babeld-c2ee9279
debug1: no match: babeld-c2ee9279
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: rsa-sha2-512
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-rsa SHA256:...
debug1: Host 'github.com' is known and matches the RSA host key.
debug1: Found key in /Users/saurabh/.ssh/known_hosts:1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: saurab.mish@gmail.com RSA SHA256:...
debug1: Will attempt key: /Users/saurabh/.ssh/id_rsa 
debug1: Will attempt key: /Users/saurabh/.ssh/id_dsa 
debug1: Will attempt key: /Users/saurabh/.ssh/id_ecdsa 
debug1: Will attempt key: /Users/saurabh/.ssh/id_ed25519 
debug1: Will attempt key: /Users/saurabh/.ssh/id_xmss 
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,rsa-sha2-512,rsa-sha2-256,ssh-dss>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: saurab.mish@gmail.com RSA SHA256:...
debug1: Authentications that can continue: publickey
debug1: Trying private key: /Users/saurabh/.ssh/id_rsa
debug1: Trying private key: /Users/saurabh/.ssh/id_dsa
debug1: Trying private key: /Users/saurabh/.ssh/id_ecdsa
debug1: Trying private key: /Users/saurabh/.ssh/id_ed25519
debug1: Trying private key: /Users/saurabh/.ssh/id_xmss
debug1: No more authentication methods to try.
git@github.com: Permission denied (publickey).

“身份文件”行末尾的“-1”表示 SSH 找不到要使用的文件。

我修改了this answer,使私钥全局配置,为:

git config --global core.sshCommand "ssh -i $HOME/.config/ssh/id_rsa -F /dev/null"

【讨论】:

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