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Why I’m looking for Sponsors on Github

Posted on October 4, 2021October 29, 2021 by Robert Hafner

After two decades of open source development I’m looking for people to sponsor my work.

Telling OpenSSH to Pull Keys from Github with AuthorizedKeysCommand

Posted on November 19, 2021November 19, 2021 by Robert Hafner

Using the AuthorizedKeysCommand OpenSSH option to pull your SSH Keys directly from Github.

Multi-Py: Multiplatform Container Images for Python Packages

Posted on November 10, 2021November 10, 2021 by Robert Hafner

Multi-Py publishes container images for popular Python packages targeting AMD64, ARM64, and ARM v7, on Ubuntu and Alpine.

Using Github Actions OpenID Connect to push to AWS ECR without Credentials

Posted on October 29, 2021November 24, 2021 by Robert Hafner

Learn how to push images from Github to AWS ECR using the Github Actions OpenID Connector.

Getting AWS ECS to work on Ubuntu with Full GPU Support

Posted on July 6, 2020October 30, 2021 by Robert Hafner

I’m a big fan of Amazon ECS- it’s a remarkably simple containerization service that integrates with the rest of AWS’s services relatively easily. While I’d generally prefer to run with Fargate there are times when I need to have a bit more control over the underlying machines- especially when it comes to tasks using GPUs….

A Simple Jekyll Portfolio Theme

Posted on June 3, 2019October 14, 2020 by Robert Hafner

I write a lot of software, and I like sharing it with the world. So when I decided to redo my portfolio it was only natural that I release the theme itself as an open source project.

GitStars – A Github API for Front End Development

Posted on May 27, 2019May 26, 2019 by Robert Hafner

TLDR: GitStars Github, Documentation, and New Badges. Developers love badges. For these reason there are a ton of different Github Badges websites that let you build out your own badges for your projects. Most of them have the same issue though- they stop working quickly due to the Github API Ratelimiting, which only allows 60…

secretcli – an interface for the AWS Secrets Manager

Posted on October 21, 2018October 20, 2018 by Robert Hafner

I love the AWS Secrets Manager, but have found the awscli tools for it to be a bit bulky. Most of the time all I want to do is download a file, edit it, and upload it again- and even then I normally just want to quickly change a single value inside of my “secret”….

urlparser – a simple python program for extracting info from URLs

Posted on October 13, 2018October 12, 2018 by Robert Hafner

I regularly run into the need to use part of a URL inside of shell scripts- such as extracting the hostname and port from a URL in order to check if the service is reachable- and got a bit tired of screwing with regex. The urllib python library’s parse component is a great tool for…

ec2details, the missing EC2 Instance Metadata API

Posted on March 28, 2018April 3, 2018 by Robert Hafner

When working with the AWS EC2 service in a programmatic way I’ve repeatedly run into a simple problem- how can I get up to date metadata about the various instance types in a programmatic way? It turns out this simple problem does not actually have a simple solution. AWS offers their Bulk API, which has…

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About

Robert Hafner is a Principal Engineer based in Chicago focusing on distributed applications, infrastructure, and security. This blog is a running journal of projects, tutorials, and random ideas that pop into his head.

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Popular Posts

  • Using Github Actions OpenID Connect to push to AWS ECR without Credentials
  • Getting AWS ECS to work on Ubuntu with Full GPU Support
  • A Walkthrough of PSR-6: Caching
  • Building an Email Testing Environment with Vagrant, Dovecot and Travis-CI
  • Multi-Py: Multiplatform Container Images for Python Packages
  • Telling OpenSSH to Pull Keys from Github with AuthorizedKeysCommand
  • ec2details, the missing EC2 Instance Metadata API
  • Manage Github Pull Requests with gitconsensus
  • Introducing jsonsmash – work with large json files easily
  • secretcli – an interface for the AWS Secrets Manager

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