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Adding Users to an EC2 Ubuntu Instance

By default an EC2 instance has only a single user other than root. For example, on a Ubuntu instance, that user is ubuntu. If there will be multiple people accessing the instance then it’s generally necessary for each of them to have their own account. Setting this up is pretty simple, it just requires sorting out some authentication details.

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Favourite Talks from useR 2017

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Docker Persisting User Data

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Deploying Jupyer on AWS using Docker

Amazon’s EC2 Container Services (ECS) is an orchestrated system for deploying Docker containers on AWS. This post is about not using ECS.

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Rstudio Docker Digitalocean

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Installing Hadoop on Ubuntu

This is what I did to set up Hadoop on my Ubuntu machine.

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Pyspark In Jupyter Notebooks

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Installing Spark Ubuntu

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Increasing MySQL Packet Maximum Size

In the process of uploading a massive CSV file to my Django application my session data are getting pretty big. As a the result I’m getting these errors:

  • (1153, "Got a packet bigger than 'max_allowed_packet' bytes") and
  • (2006, 'MySQL server has gone away').

The second error is potentially unrelated.

After some research it became apparent that the source of the problem is my max_allowed_packet setting.

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Setting up ExpressVPN on Ubuntu

I’ve been meaning to set up a VPN and this morning seemed like a good time to tick it off the bucket list. This is a quick outline of my experience, which included one minor hiccup.

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Setting Up Jupyter Ubuntu Xenial

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Deploying a Minimal API using plumber on DigitalOcean

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RSelenium and Java Heap Space

I’m in the process of deploying a scraper on a DigitalOcean instance. The scraper uses RSelenium with the PhantomJS browser. I ran into a problem though. Although it worked flawlessly on my local machine, on the remote instance it broke with the following error:

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Comrades Marathon 2017

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Web Dev to Data Science

This infographic, which looks at the overlap between Web Dev and Data Science, appeared recently on the DataCamp blog. Since I’m currently straddling these two disciplines it seems rather appropriate.

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Clustering Time Series Data

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Bulgaria Web Summit

The Bulgaria Web Summit happened on 7 and 8 April 2017 at the Inter Expo Center in Sofia, Bulgaria.

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Relationship between Race Distance and Gender Ratio

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Diagnosing the Long Distance Runner with Django, D3 and R

This was the talk that I presented at the Bulgaria Web Summit.

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Google Quick, Draw!

Spent a very diverting few minutes playing with Quick, Draw! this morning, which is one of the cool AI Experiments hosted by Google.

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Categorically Variable