什么时候该用这个 ssh_host_rsa_key？
用来恢复缺失的默认文件、确认发行版本带了什么，或拿你的 OpenSSH config 做 diff。
适用于
当前查看：
Ubuntu 20.04 LTS (Focal Fossa)
相同于：
其他版本：
详情
- 大小
- 38 行
- MD5
- 725195cae82a3d91c2bf8d29e248270d
- SHA256
- 42f06706672e55642587f4958670778d993c60666679c238bdfd18ecdcbb327d
/etc/ssh/ssh_host_rsa_key
-----BEGIN OPENSSH PRIVATE KEY----- b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAABlwAAAAdzc2gtcn NhAAAAAwEAAQAAAYEA7CXMaIuO00M/Y1ixJ8m+xk0bjpMky407XiVEuPNXsnQcvLBqgxCb 7lEY4upTRg831TiVD+hnZXnOgzlow4rwxkBykax+QEiXk5E9vTPjxO+EJI9wNZIQCS7mzn LzHiedRaNCoLciUXiDwxwFjLQM0I0l59lBw+bBAhXxBdWPYn6jMByS6M3poK6g3AxNPuQe EKYVxWJDLVaRJH7tNTbztCnuguKBJi3OkgQEZORX9cS+whz0i0C6LpqWlDHoGRwumZyv2W 5p3Tsc6e+9Vw4y7SG09Ra6SAyc7amOXFnbjeeX6QbuXR5jGScU1+3e5kdNhxwhncjH/knW gz1MoLXkcKDMKESaFObkaNe0L1FSWgp8flvY+y7DI4XLw6m4hkqDaBaw0W7wIq0hNgRVBN Qp7rtGrdgPNk0W5OeRJWwb6hgCDTRei1Tf1mUpcd11XIWBspb0s8V8vrmBomYRAQoec0lI 8DQn+qYE1HIMHmA1dYEtd5+KZOwhoCWelhKDs+5fAAAFiKtBSeqrQUnqAAAAB3NzaC1yc2 EAAAGBAOwlzGiLjtNDP2NYsSfJvsZNG46TJMuNO14lRLjzV7J0HLywaoMQm+5RGOLqU0YP N9U4lQ/oZ2V5zoM5aMOK8MZAcpGsfkBIl5ORPb0z48TvhCSPcDWSEAku5s5y8x4nnUWjQq C3IlF4g8McBYy0DNCNJefZQcPmwQIV8QXVj2J+ozAckujN6aCuoNwMTT7kHhCmFcViQy1W kSR+7TU287Qp7oLigSYtzpIEBGTkV/XEvsIc9ItAui6alpQx6BkcLpmcr9luad07HOnvvV cOMu0htPUWukgMnO2pjlxZ243nl+kG7l0eYxknFNft3uZHTYccIZ3Ix/5J1oM9TKC15HCg zChEmhTm5GjXtC9RUloKfH5b2PsuwyOFy8OpuIZKg2gWsNFu8CKtITYEVQTUKe67Rq3YDz ZNFuTnkSVsG+oYAg00XotU39ZlKXHddVyFgbKW9LPFfL65gaJmEQEKHnNJSPA0J/qmBNRy DB5gNXWBLXefimTsIaAlnpYSg7PuXwAAAAMBAAEAAAGAeWp1zsryhGzvCoVvkKWKEStUH9 pH8OCMxbsjunRjgr1wiROrr/e6NK49vW39oufwLREKk0NK5kHajF3YH7IwWb6JKZ0mzKaG SLlEpSMo2PjNWH7nkqOm2xHiWgOAPODhXAy1FS0T2A++r3KY598rN49bDfoGdlMOqaPeaM GFF39FKFeIsWot1Q/0ZS9uCAgB7U13pCUBpS39MmaQT+wRIXDt0R3kiVzD+Q9Xswg0sYiX C/cXRQHiuFODWG7QhxiVYDArJNfpqXas419H13LSHZmZho95ah2ZWMEJOfkOy+woxGn1V2 5RLajAzBI8yupm7maMe4DnWKO6XB45q7u7nD5KQXlaFYgzIL1zDFdUdVNm5TFaFabSHHud Zb1iejDoPIofTXEfVMyh4GCqbKu0bBUrLLDZ/WI0jjcRllsdPsinzj1akNRMFH/O34WRsY TylJgcac2OLE721DapQEOlT2OxJaywdt74JKsxqrKEQANeVrj/1/nl8beW17sU4/IBAAAA wDp1GZDsV3eMi/uIlN78EB+LwKN5K7f8fDAxS597oN+qdybwMuy3XCgAHfDhU0dRiYb7hS orVzxvfsJqU6QXX1n5sI8JqWkfhtWa3+MEWFvHrL0gmnnzlHJgAQtXD5YWzrwrDVfyKK0g P2J9HIHE9hQrhk1MJcbBTwvzYHfLwS/ypEJsHTqziomtkdGDZzbJYH9+LUTjiCxdyMKGWT vW5qdRnqMv58IyhgCAndzf2J8yt0yYO0QBOQm3FqMN/SL3rwAAAMEA/agTWkOSTJ3eRtk3 kAabg8yI7J4qsMkbvX9olytaRyctlPcaZsF30hkbxhGDk+XUPUyy9FwXmzq8FEo4KOJtXR SgHc5y5NKMFRgq1B4eAMnPsnbFLIgqsQXpTYNnGnIooAnkwtppfRxl6UkjGycC04MfQDK4 /QL7qWOZ3M2LGf/ATTrQtgnhNoZ02Mn9M4H2PtoEUW4yX1sBn+f/t87jAnhXt919uFsLdW bggaDwyZoKh76ItW/WOodlgTR4MuBXAAAAwQDuVE//wH2aF9kPbL5AJDTTPeaAQhp1S76G wZfUPMg6ZB4bhFPUis1nrZbvrhj5GllAeDFhmp23VfLOjM5gFM6on5Jk33Sg3hCKUra+jh +WdTdtoAnJS5yOHEEF3sejnUJeJ9B/Qr4ILdrOSss3jFLt7VdOzOnt8+hL9YCKpnCGYtfS K1Ngul1fWqsfHsPWLsm9E9hNHT88YeE7R2LMalqoa81pOJf/j+eYovKOnVyZXkZ6CLS7ch l4W00kxtpm/TkAAAARcm9vdEBmMjI3ZmE5ODc1ZWQBAg== -----END OPENSSH PRIVATE KEY-----
复制粘贴
curl：
curl https://exampleconfig.com/api/v1/config/original/725195cae82a3d91c2bf8d29e248270d?hint=ssh_host_rsa_key
wget：
wget -O ssh_host_rsa_key https://exampleconfig.com/api/v1/config/original/725195cae82a3d91c2bf8d29e248270d?hint=ssh_host_rsa_key
给 AI Agent 用
<prompt><role>DevOps agent</role><source url='https://exampleconfig.com/api/v1/config/original/725195cae82a3d91c2bf8d29e248270d?hint=ssh_host_rsa_key' /><config><app>OpenSSH</app><os>Ubuntu 20.04 LTS (Focal Fossa)</os><location>/etc/ssh/ssh_host_rsa_key</location><lines>38</lines><md5>725195cae82a3d91c2bf8d29e248270d</md5><sha256>42f06706672e55642587f4958670778d993c60666679c238bdfd18ecdcbb327d</sha256></config></prompt>
粘贴到 Claude、ChatGPT 或任何 AI 助手里。
安装 OpenSSH
Alpine Linux
sudo apk add openssh-server
Debian
sudo apt update && sudo apt install openssh-server
Red Hat Enterprise Linux
sudo yum install openssh-server
Ubuntu
sudo apt update && sudo apt install openssh-server
文件位置
FAQ
怎么恢复 OpenSSH 的默认配置？
下载文件，把 /etc/ssh/ssh_host_rsa_key 里的当前配置备份好，替换掉，然后 reload 或 restart OpenSSH。
ssh_host_rsa_key 适合直接上生产吗？
这是 Ubuntu 20.04 LTS (Focal Fossa) 的厂商默认配置，只能当基线。上生产前请检查安全和性能设置。
和其他 OS 版本有什么不同？
默认值会随发行版和版本变化，这份对应 Ubuntu 20.04 LTS (Focal Fossa)。
我可以用它来排查 OpenSSH 吗？
可以。和你的配置做 diff 找出漂移，然后只恢复需要的段落。
