Error with Plumber API deployment in Digital Ocean via R | Authentication with ssh server failed

Hello Everyone! I am facing some issues with Plumber API deployment in Digital Ocean via R. Given below is the R code I executed in my desktop (in RStudio) after making the following configurations..

  • Created SSH key in my desktop(eg:via puTTYgen)
  • Entered the public key content in my Digital Ocean account
    myExistingDroplets <- analogsea::droplets()

Logs from console:

    Provisioning a new server for which you will get a bill from DigitalOcean. Using default ssh keys: PC NB: This costs $0.00744 / hour until you droplet_delete() it Waiting for create ........... 
    New server key: <key>
    Error: Authentication with ssh server failed
  • The code line "analogsea::droplets()" opened a new window in my
    browser to facilitate authentication and after
    authentication, the code returned my existing droplet details from Digital
    Ocean. That's a small win!

  • The code line "do_provision(name="myNewDroplet")" prompted me to
    provide my Digital Ocean root password, then it created a new
    droplet in my Digital Ocean account!, however it didn't
    completely succeed (i assume), as it gave an error "Error:
    Authentication with ssh server failed". And, I am unable to reach
    this new server/droplet from my browser (on the port : 8000 which
    plumber listen to)

One thing I am struggling to understand is, it printed out a New server key: (SSH Fingerprint) on the console which doesn't match with the SSH key pair I configured on my PC + Digital Ocean website (under settings -> ssh keys). I am not sure why would it create a new ssh server key as part of the droplet creation and why would it cause an authentication failure. my understanding is an ssh key needs to be created at the client(my PC) and the public key of that should be entered in Digital Ocean.

I appreciate if you can share any thoughts on the root cause for this error or if you think I missed out any steps in between..

Thanks in advance!

1 Like


Sorry you're running into issues!

If you're using the CRAN version of plumber (as of 7/8/2020), I would bet that it is broken in general.

I have not verified if the GitHub version is working yet either. But it is at the end of my todo list for the next plumber release. (Rapidly approaching!)


@barret Thank you for your response! Glad to hear that this issue may get resolved in the upcoming release. I would love to see my script running and will wait for the changes. Thanks!

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