--- title: "Eric Hallow (@erhallow) | Hashnode" description: "AWS | Python | Terraform. Read the latest articles by Eric Hallow on Hashnode." url: "https://hashnode.com/@erhallow" --- @erhallow # Eric Hallow @erhallow · Chicago, IL · Joined August 2020 AWS | Python | Terraform [Website](https://erichallow.com/) ### [Apache Cassandra Introduction](https://erichallow.cloud/apache-cassandra-introduction?utm_source=hashnode&utm_medium=feed) How It Started Apache Cassandra is an open-source database developed by Facebook around 2008. It was developed to address the growing need for a database that could scale while maintaining no single point of failure. This helped power Facebook's inbo... 11 min read · [erichallow.cloud](https://erichallow.cloud/apache-cassandra-introduction?utm_source=hashnode&utm_medium=feed) [Mar 7, 2021](https://hashnode.com/posts/apache-cassandra-introduction/60465383ec8992449a78bb92) ### [Review of the HashiCorp Terraform Associate exam](https://erichallow.cloud/review-of-the-hashicorp-terraform-associate-exam?utm_source=hashnode&utm_medium=feed) Intro In this article, I will recap my experience with taking the HashiCorp Terraform Associate Certification. I will break down my prior experience, resources used, study tips, and more. I will discuss the importance of Infrastructure as Code (IaC) ... 7 min read · [erichallow.cloud](https://erichallow.cloud/review-of-the-hashicorp-terraform-associate-exam?utm_source=hashnode&utm_medium=feed) [Jan 19, 2021](https://hashnode.com/posts/review-of-the-hashicorp-terraform-associate-exam/600734b1094f2b30301de093) ### [AWS Web Identity Federation](https://erichallow.cloud/aws-web-identity-federation?utm_source=hashnode&utm_medium=feed) Introduction In this article, I will discuss the implementation of web identity federation to access an AWS S3 bucket. Web identity federation is the process of simplifying the authentication of users for the application. This allows users to log in ... 11 min read · [erichallow.cloud](https://erichallow.cloud/aws-web-identity-federation?utm_source=hashnode&utm_medium=feed) [Oct 26, 2020](https://hashnode.com/posts/aws-web-identity-federation/5f970e281ad4361521cb293d) ### [Create A Hybrid DNS](https://erichallow.cloud/create-a-hybrid-dns?utm_source=hashnode&utm_medium=feed) Introduction I will demonstrate how to build a Hybrid DNS system between AWS and a customer on-premise environment. For this blog, I will explain how to configure the connection between the two environments. The base environments are given in the dem... 7 min read · [erichallow.cloud](https://erichallow.cloud/create-a-hybrid-dns?utm_source=hashnode&utm_medium=feed) [Oct 26, 2020](https://hashnode.com/posts/create-a-hybrid-dns/5f970ced40b501154237d661) ### [Build a Site-to-Site VPN from AWS to the Customer](https://erichallow.cloud/build-a-site-to-site-vpn-from-aws-to-the-customer?utm_source=hashnode&utm_medium=feed) Introduction In this article, I will explain to you how I built a Site to Site VPN from an AWS Virtual Private Cloud (VPC) to an on-premise environment utilizing Border Gateway Protocol (BGP) to configure the routes. I will discuss the topics below: ... 8 min read · [erichallow.cloud](https://erichallow.cloud/build-a-site-to-site-vpn-from-aws-to-the-customer?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/build-a-site-to-site-vpn-from-aws-to-the-customer/5f8f2c8403022e45ade4aedd) [Oct 20, 2020](https://hashnode.com/posts/build-a-site-to-site-vpn-from-aws-to-the-customer/5f8f2c8403022e45ade4aedd)