04运维&测试/SSH

创建 ssh-keygen

使用:ssh-keygen -t rsa -C "youremail@example.com"
参数:

  • -t 指定密钥类型。如果没有指定则默认生成用于 SSH-2 的 RSA 密钥。
  • -C comment 提供一个新注释

调试

ssh -vT git@github.com 查看错误原因

发现 Trying private key 用的 id_rsa,没用我自己起名的,所以配置 ssh_config

$ ssh -vT git@github.com
OpenSSH_7.3p1, OpenSSL 1.0.2k  26 Jan 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to github.com [192.30.255.112] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /c/Users/Administrator/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.3
debug1: Remote protocol version 2.0, remote software version libssh-0.7.0
debug1: no match: libssh-0.7.0
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ssh-rsa
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:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5                                                 SY8
debug1: Host 'github.com' is known and matches the RSA host key.
debug1: Found key in /c/Users/Administrator/.ssh/known_hosts:2
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /c/Users/Administrator/.ssh/id_rsa
debug1: Trying private key: /c/Users/Administrator/.ssh/id_dsa
debug1: Trying private key: /c/Users/Administrator/.ssh/id_ecdsa
debug1: Trying private key: /c/Users/Administrator/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).

ssh_config

  • linux 配置 “/etc/ssh/ssh_config” 文件
  • window 配置 “C:\Program Files\Git\etc\ssh\ssh_config” 文件
名称 说明
IdentityFile ~/.ssh/identity 设置从哪个文件读取用户的 RSA 安全验证标识。