SSH 連接到遠程服務器上的 GitHub

Question

我正在嘗試在我的遠程服務器 Debian 上使用 SSH 克隆我的倉庫 GitHub。

在本地我有鍵id_ed25519.pub和id_ed25519 。 我做了一個

sh-copy-id -i ~/.ssh/id_ed25519.pub user@host

檢查遠程服務器，我的 pubkey 在authorized_keys內。 我的公鑰也在我的 GitHub 帳戶上。

在我的遠程服務器上，我的 sshd_config 有：

AuthorizedKeysFile      ~/.ssh/authorized_keys

和

PubkeyAuthentication yes

和

PasswordAuthentication no

在執行 ssh -vT git@github.com 時：

OpenSSH_7.9p1 Debian-10+deb10u2, OpenSSL 1.1.1d  10 Sep 2019
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to github.com [...] port 22.
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.9p1 Debian-10+deb10u2
debug1: Remote protocol version 2.0, remote software version babeld-78794f53
debug1: no match: babeld-78794f53
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: 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 /root/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: Will attempt key: /root/.ssh/id_rsa
debug1: Will attempt key: /root/.ssh/id_dsa
debug1: Will attempt key: /root/.ssh/id_ecdsa
debug1: Will attempt key: /root/.ssh/id_ed25519
debug1: Will attempt key: /root/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: Trying private key: /root/.ssh/id_ed25519
debug1: Trying private key: /root/.ssh/id_xmss
debug1: No more authentication methods to try.
git@github.com: Permission denied (publickey).

Answer 1

您的遠程服務器不知道您的私鑰。
通常，您不想將私鑰復制到遠程服務器。

但是從本地計算機連接到遠程服務器時，您可以使用代理轉發ssh myuser@remoteserver -A
這允許遠程服務器使用您的私鑰，但無法訪問密鑰本身。
或者您可以將ForwardAgent yes添加到您的~/.ssh/config文件中