HazyFish/ucdavis-csif-passwordless

Setup passwordless login to CSIF using SSH Key Authentication and SSH Config.

Outcome:

What you need:

Open Windows Powershell
Run command ssh-keygen
- You don't need to (of course you can) change the default location or set a password for the key, so press enter directly when you see any prompts
- This command generates a pair of public and private key used in SSH Key Authentication
Run command cat ~/.ssh/id_rsa.pub | ssh username@pcXX.cs.ucdavis.edu "cat >> ~/.ssh/authorized_keys"
- You need to replace username and XX in the command
- This command uploads the public key you just generated to a CSIF computer
Open VS Code and click the little green button in the bottom-left corner of the window
Select Remote-SSH: Open Configuration File... and choose the first option prompted
Replace the file content with the following and save it (of course, you need to replace username and XX too)
```
Host csif
    HostName pcXX.cs.ucdavis.edu
    User username
    IdentityFile ~/.ssh/id_rsa
```
Return to Windows PowerShell and run command ssh csif to connect to a CSIF computer passwordlessly
- If you are still prompted for entering a password, your SSH Key Authentication is not set up correctly
- You can connect to CSIF in this passwordless way on your computer from now on!

Open Terminal
Run command ssh-keygen
- You don't need to (of course you can) change the default location or set a password for the key, so press enter directly when you see any prompts
- This command generates a pair of public and private key used in SSH Key Authentication
Run command ssh-copy-id username@pcXX.cs.ucdavis.edu
- You need to replace username and XX in the command
- This command uploads the public key you just generated to a CSIF computer
Open VS Code and click the little green button in the bottom-left corner of the window
Select Remote-SSH: Open Configuration File... and choose the first option prompted
Replace the file content with the following and save it (of course, you need to replace username and XX too)
```
Host csif
    HostName pcXX.cs.ucdavis.edu
    User username
    IdentityFile ~/.ssh/id_rsa
```
Return to Terminal and run command ssh csif to connect to a CSIF computer passwordlessly
- If you are still prompted for entering a password, your SSH Key Authentication is not set up correctly
- You can connect to CSIF in this passwordless way on your computer from now on!

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