Direct DevOps from Quality Thought

Pods Pod is an atomic unit of creation in k8s Think of Pod as a small package with one or more containers in it Every pod will get an unique ip in the k8s cluster Containers in the Pod have shared resources i.e. shared network shared storage Consider typical application If we have to run… Continue reading DevOps Classroom notes 21/Jun/2026

Installing k8s using kube-adm CRI => Containerd CNI => Flannel VMS => AWS Prompt You are an experienced kubernetes engineer specialized in installations I am installing Single Master Kubernetes Cluster with version 1.36 I have 2 nodes one for master and one for node The OS on two nodes is ubuntu 26.04 LTS The Container… Continue reading DevOps Classroom notes 18/Jun/2026

Kubernetes (k8s) installation options Broadly k8s installation is of two types single node: This for developer purposes kind minikube multi node: This if for production Multi-node options Here we have two broader options Are the nodes maintained by you: Here we install k8s cluster you can use physical servers or virtual machines Get the nodes… Continue reading DevOps Classroom notes 17/Jun/2026

## 1. How Facts Work “`text [Control Node]  — gather_facts —>  [Managed Host]                 <— returns JSON — “` Ansible runs the **setup module** at the start of every play (unless disabled) and stores the results as variables accessible via `ansible_facts.*`. — ## 2. Viewing Facts “`bash #… Continue reading DevOps Classroom notes 17/Jun/2026

Google’s History with Containers Google has a history of running containers in their production environments To manage these containers they have orchestration platorms Omega Borg When docker was adopted, Google has created an open-source container orchestration platform called as Kubernetes and donated it to CNCF. This is written in golang Kuberentes in its early versions… Continue reading DevOps Classroom notes 15/Jun/2026