DevOps Classroom notes 23/Dec/2025

Installing kubernetes using kube-adm

  • K8s installation does not contain
    • networking implementations
    • container run time
  • Prompt for CNI
you are an kuberenetes expert
I'm a begineer in kubernetes
I'm trying to install k8s using kube-adm
I want to know what are possible CNI and give me an output in tabular format with CNI, purpose and when to use
  • Prompt for CRI
you are an kuberenetes expert
I'm a begineer in kubernetes
I'm trying to install k8s using kube-adm
I want to know what are possible CRI and give me an output in tabular format with CRI, purpose and when to use
you are an kuberenetes expert
I'm a begineer in kubernetes
I'm trying to install k8s 1.34 using kube-adm with single master and one node
my virtual machines are in AWS and both of them are ubuntu 24.04 using CRI which is containerd and CNI which is flannel.
Give me details from system requirements to installation steps and checks to ensure k8s is working correctly

k8s ways of working

  • Our first goal is to run a container in k8s
  • K8s expects a desired state and it works in two ways
    • command:
      • We construct a kubectl command for our desired state
    • manifest
      • We create a manifest file (YAML) and execute it using kubectl
    • interacting with api-server directly (curl) or via sdks (languages like python, java, javascript, dotnet, golang)
  • Lets discuss about constructing a command vs manifest (yaml file)

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By continuous learner

devops & cloud enthusiastic learner

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