Deep Dive into Enterprise IT
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
In broad terms, virtualization of computing resource is about isolation of resources, at different levels. There are five levels of virtualization: In my context I deal mostly with OS level and HAL (hardware abstraction layer) level of virtualization. In loose terms, the word containerization refers to OS level virtualization, while the word virtualization is exclusively … Read moreVirtualization 1 of 4 – Hypervisor
What for Someone who I maintain website for realized the bill of a public cloud provider isn’t exactly as expected. The computing resource falls under “free tier” but the disk isn’t. And the cost of disk usage is the surprise. Second, WordPress does a good job building the initial website but requires a hosting EC2 … Read moreMigrate WordPress to static website
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Update 2023: the practice outlined in this post has been outdated.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
I came across another personal project for friend to migrate a static site to word press site. The original site is on Jekyll + Bootstrap hosted on GitHub. However, the original site does not have a lot of content to justify a special migration effort. So I just create it from scratch. I outlined how … Read moreA second WordPress site with EC2 instance