A Cloud Development Python Kit for Terraform — What is Python CDKTF Python Cloud Development Kit for Terraform (CDKTF) allows you to use Python to define and provision infrastructure. With CDKTF, developers can set up their infrastructure as code without context switching from Python (an other programming languages), using the same tooling and syntax to provision infrastructure resources as they use to…

How to deploy and use Nginx Ingress Controller — From my previous “K8s — Ingress” article, we learned that Ingress is actually an entrance to the cluster from outside of the K8s cluster, and forwards external requests to different services in the cluster. In fact, it is equivalent to a load balancing proxy server such as nginx and haproxy…

K8s cluster monitoring tools — Why Datadog If you wonder why use Datadog instead of Prometheus for K8s monitoring, in my opinion, Prometheus and Datadog have both turned out to be fully featured tools according to their use cases. While Prometheus offers lower pricing than DataDog, it misses the seamless installation experience and depth in features. Prometheus…

How does AWS IAM evaluate your request? — AWS IAM (Identity and Access Management) is an AWS service that helps you securely control access to your AWS resources. It enables you to create and control services for user authentication or limit access to a certain set of people who use your AWS resources. When a user tries to…

A more open and stable container running infrastructure — In my last article I talked about the story behind Docker, CRI and the K8s community build CRI runtime: CRI-O. Let’s continue talk about containerd. With the development of the CRI solution and the improved support for CRI by other container runtimes, the K8s community started to remove the dockershim…

A more open and stable container running infrastructure — Before learning Containerd, it is necessary for us to make a brief review of the development history of Docker, because there are a lot of components involved in actual combat, and we will often hear many of them, but it is not clear what these components are used for, such…

Differences between list and tuple — Data structures are the foundation of every programming language. Understanding and mastering the basic data structures of Python is crucial to learning the language well. Today we will learn the two most common data structures in Python: lists and tuples. List and Tuple Basics In Python, both lists and tuples are ordered collections that…

How to write singleton pattern in Python — Why Singleton Pattern The Singleton Pattern is a common software design pattern whose main purpose is to ensure that only one instance of a class exists. Singleton objects come in handy when you want only one instance of a class to appear in the entire system. For example, the configuration information of a…

Ingress controller and Ingress class introduction — In my last K8s article, I talked about “K8s Ingress Rules”, which can be used to forward user requests to existing K8s services. These routing rules define how traffic should be distributed and forwarded, based on HTTP/HTTPS protocols. We know that Service itself has no service capability, it is just…