How to use a virtual machine?

Question

How do I use a virtual machine? I have created a droplet and now I want to code in python and have the machine run on its own. Lets say at 12pm everyday I want it run a function and save the result to my local hard drive, how do I do this?

Thanks.

Answer 1

baraboom September 21, 2020

Hi, you’ve described a common use case for cron, a common facility on unix/linux. Here’s a tutorial on setting up cron, including how to set the time and save the result to a hard drive - either as a new file or appending an existing file:

How To Use Cron To Automate Tasks On a VPS

More handy info and a crontab generator app here, too:
https://crontab.guru/#0_12_*_*_*

That’s the link for an example crontab setting that will execute every day at 12:00 server time.

Hope this helps - let us know if you have any more questions.

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leandroizqvallejos September 21, 2020

Great thanks but how do I use the droplet? I made one but now I am stuck on what to do next. Like what do I do to get the vm open and type in my code to have it running? Is it through the console and if so how do I receive my credentials including my login id.

Thank you.
Reply Report
- baraboom September 21, 2020
  
  Normally you would be able to use the SSH server on the droplet to connect, issue commands and transfer files:
  
  ssh
  
  scp
  
  sftp
  
  Here’s some additional information on these services:
  
  How To Use SSH to Connect to a Remote Server in Ubuntu
  
  How To Use SFTP to Securely Transfer Files with a Remote Server
  
  So what I’d do is:
  
  write the python script on my computer
  
  scp (secure copy) the script to my home directory on the server
  
  ssh to the droplet and edit my crontab (like the first tutorial I posted) to execute my python script
  
  As for your credentials, if you don’t have them you can reset the root password like this:
  
  I lost my Droplet’s SSH key or root password :: Account Troubleshooting and FAQs
  
  Hope this helps - let us know how it is going, good luck!
  
  How To Use SFTP to Securely Transfer Files with a Remote Server
  by Justin Ellingwood
  SFTP is a secure way to transfer files between local and remote servers. Much more secure than FTP, this protocol uses an SSH tunnel to establish a connection and uses encryption to transfer files in an interactive session.
  
  Reply Report
  
  leandroizqvallejos September 29, 2020
  
  How do I find or change my username to login? I have tried my email and project name with the emailed password and it does not work. Thanks
  
  Reply Report
- leandroizqvallejos September 29, 2020
  
  [deleted]
  
  Reply Report

Answer 2

leandroizqvallejos September 21, 2020

Great thanks but how do I use the droplet? I made one but now I am stuck on what to do next. Like what do I do to get the vm open and type in my code to have it running? Is it through the console and if so how do I receive my credentials including my login id.

Thank you.
Reply Report
- baraboom September 21, 2020
  
  Normally you would be able to use the SSH server on the droplet to connect, issue commands and transfer files:
  
  ssh
  
  scp
  
  sftp
  
  Here’s some additional information on these services:
  
  How To Use SSH to Connect to a Remote Server in Ubuntu
  
  How To Use SFTP to Securely Transfer Files with a Remote Server
  
  So what I’d do is:
  
  write the python script on my computer
  
  scp (secure copy) the script to my home directory on the server
  
  ssh to the droplet and edit my crontab (like the first tutorial I posted) to execute my python script
  
  As for your credentials, if you don’t have them you can reset the root password like this:
  
  I lost my Droplet’s SSH key or root password :: Account Troubleshooting and FAQs
  
  Hope this helps - let us know how it is going, good luck!
  
  How To Use SFTP to Securely Transfer Files with a Remote Server
  by Justin Ellingwood
  SFTP is a secure way to transfer files between local and remote servers. Much more secure than FTP, this protocol uses an SSH tunnel to establish a connection and uses encryption to transfer files in an interactive session.
  
  Reply Report
  
  leandroizqvallejos September 29, 2020
  
  How do I find or change my username to login? I have tried my email and project name with the emailed password and it does not work. Thanks
  
  Reply Report
- leandroizqvallejos September 29, 2020
  
  [deleted]
  
  Reply Report

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