it:ad:ssh:howto:configure_the_association_between_host_and_key

IT:AD:SSH:HowTo:Configure the association between Host and Key

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## Summary ##

It's useful to associate to each target, which key to use.

ie, on BitBucket use the id_* key, on Git, another, etc.

Nice thing about most linux apps is that they have a config file in your %userprofile% folder. Same for SSH/.

## Process ##

  • So if it doesn't already exist, create the ssh config file first: ~/.ssh/config
  • Edit it with a text editor
  • Add (note the second line is indented by a single space):

Host bitbucket.org
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null
   IdentityFile ~/.ssh/id_rsa

After editing the file, restart the CLI (Git Bash/ or other) for the new settings to take effect so that you can test the connection:

### The %HOME% variable – for Git and SSH ###

Git is going to use SSH automatically. In theory this means that IT:AD:Git uses IT:AD:SSH, which uses the above config file.

In theory…

The problem is that when IT:AD:Git is looking for %HOME% which is the Linux environment variable that is equivalent to ~/ which is the equivalent to the Windows %userprofile% variable. And since it's not set, it won't find it, therefore won't find the %userprofile%\.ssh\config file.

Ensure you've followed the instructions here: IT:AD:Git:HowTo:Install

### Which Account?

The above solves it for the command line scenario.

But when running within a CI environment, such as IT:AD:Jenkins, the service account (or apphost account in other scenarios) is probably not the same user.

So you have to

  • RDP in as the service account
  • set the %HOME% account from the service account in question.
  • for that account, create the .ssh folder with a set of keys in it
    • <div tip“

      >If the service account is the `Local System` account, then the `%HOME%` directory is `C:\Windows\SysWOW64\config\systemprofile\.ssh`</callout>

      ## Resources ##

    • /home/skysigal/public_html/data/pages/it/ad/ssh/howto/configure_the_association_between_host_and_key.txt
    • Last modified: 2023/11/04 23:03
    • by 127.0.0.1