Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm using Ubuntu and I have a few keys which i'm using to connect to remote machines. The key I created using ssh-keygen -t rsa is located in my home folder at ~/.ssh/ and called rsa_id. I have another key which is being used by the DevOps team in my company and I want it to become the default key. I've looked at the file /etc/ssh/sshd_config and there's this line there:

HostKey /etc/ssh/ssh_host_rsa_key

So I was wondering about two things:

1. When I issue my key using the command specified above, does it copy the content of my newly created key to this file?
2. If I want to change the default key used, shall I add another `HostKey` line and point it to the DevOps key?


share|improve this question

closed as off-topic by MadHatter, Jenny D, mdpc, dawud, Jacob May 28 '14 at 2:46

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions must be relevant to professional system administration. Server Fault is dedicated to professional system and network administrators. End user and enthusiast questions are off-topic (contact your system administrator or hire a professional to help you out). Please see the Help Center for more information." – mdpc, dawud, Jacob
If this question can be reworded to fit the rules in the help center, please edit the question.

You may be at risk of confusing the system's key with the user's key; the one in /etc/ssh/ssh_host_rsa_key identifies your system, not you as a user, and has nothing to do with sshing into remote systems. – MadHatter May 26 '14 at 7:48
Thanks MadHatter. – Itai Ganot May 26 '14 at 7:57
I don't understand why the question has been voted down... – Itai Ganot May 26 '14 at 7:57
Mouse over the down arrow; the popup says "This question does not show any research effort; it is unclear or not useful". Downvotes without comment may be presumed to be for at least one of those reasons. – MadHatter May 26 '14 at 8:04
up vote 1 down vote accepted

Hi I believe this is the answer to your question. I did not want to copy paste the answer.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.