Make it happen
Cloud adoption has gone through phases. Hashicorp’s CTO Armon Dadgar has a great stream on Hashcorp’s narrative of the three Phases of Cloud Adoption: New greenfield clients today should aim at phase 2 or phase 3 depending on their target operation size. Either way, they need a landing zone for consistency. This post focuses on … Read moreLanding Zone options in AWS
This post provides an example of using AWS CDK in Typescript. Ansible Tower and AWX We have used open-source Ansible extensively in the past. While the automation is convenient, the lack of UI makes it not as suitable as a team collaboration tool. One way to allow team collaboration with open-source Ansible, is to use … Read moreAWS CDK example in Typescript – provision an AWX server
There are two mechanisms to initialize instances in AWS. Cloud init and CloudFormation Init. Both are widely used and we discuss each of them in this posting. Then we will give an example of using AWS CDK in Python. Cloud-Init Cloud-Init is a service originally built for Ubuntu, as a bootstrapping utility to customize a … Read moreAWS CDK example in Python – provision Kubernetes Nodes
[Update] Some security improvement was introduced in may 2021. Here‘s detail. [Update] Here’s the link to the orthweb repository. In this project we introduce a medical imaging web service based on Orthanc, an open-source project of DICOM server, and a pipeline to deploy such server automatically and consistently. We deploy Orthanc on AWS automatically. This … Read moreAutomatic deployment of Orthanc on AWS
The last 30 days have been exhausting for me. I studied hard on the new AWS Certified DevOps Engineer exam and thank goodness I passed (750 out of 1000 is required). This was the hardest professional certification I ever worked on. The exam was re-launched recently in March 2019 so there is still a shortage … Read moreAWS Certified DevOps Engineer Exam Tips
Update 2023: the practice outlined in this post has been outdated. This post is for archive ony. We use CloudFormation to deploy infrastructure including private and public subnets, as well as EC2 instances. It is a good practice to place as many instances as possible in private subnet and access those only from Bastion Host … Read moreSSH key pair for access between instances in CloudFormation