尽管 ~/.ssh/known_hosts 有效，Git 仍会发出警告：“警告：永久添加到已知主机列表”

Question

我正在使用openssh 在 Linux 主机上设置持续集成的 Git 签出步骤。 git fetch 步骤成功但会记录警告。如何解决以下警告？

Warning: Permanently added the RSA host key for IP address '192.30.253.113' to the list of known hosts.

GIT_TRACE=1 和 GIT_SSH_COMMAND='ssh -v' 的完整日志： https://circleci.com/gh/jschaf/ci_speed_test/210

我不明白的是 SSH 找到了 known_hosts 条目但仍然发出警告。

# SSH logs
debug1: Server host key: ssh-rsa SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8
debug1: Host 'github.com' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
Warning: Permanently added the RSA host key for IP address '192.30.253.113' to the list of known hosts.

CI 机器上的~/.ssh/known_hosts 文件如下，我已经验证它与 GitHub 的签名匹配。

github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==

不适用于此问题的类似问题：

• Git says "Warning: Permanently added to the list of known hosts" - Answer 建议设置UserKnownHostsFile。就我而言，日志显示 SSH 使用 known_hosts。

• Disable “Permanently added …” warning on local LAN - 建议禁用警告，但我更愿意保持启用警告。

• Warning of RSA host key while cloning git repository - 仅提供有关高级 SSH 密钥交换的信息性答案。

Answer 1

从 Known_hosts 文件中删除这一行，下次再添加，就不会再出现这个提示了。