Theory:

LAB in Minikube:

> Create a new AWS Instance named “Minikube” on T2-Medium & access it via PUTTY as we do, then do the rest lab:

• Setup Commands:

  • ubuntu → This command logs you in as the ubuntu user

  • sudo su → Switches to the root user for administrative tasks

  • apt update && apt -y install docker.io → Updates the package lists and installs Docker, which is required for container management

  • curl -LO <https://storage.googleapis.com/kubernetes-release/release/$>(curl -s <https://storage.googleapis.com/kubernetes-release/release/stable.txt>)/bin/linux/amd64/kubectl && chmod +x ./kubectl && sudo mv ./kubectl /usr/local/bin/kubectl → Downloads the latest version of kubectl, sets the appropriate permissions, and moves it to /usr/local/bin so it can be executed from anywhere

  • which kubectl → Verifies the installation by showing the path where kubectl is installed

  • kubectl version → Displays the client and server versions of kubectl

  • curl -Lo minikube <https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64> && chmod +x minikube && sudo mv minikube /usr/local/bin/ → Downloads the latest Minikube binary, sets the appropriate permissions, and moves it to /usr/local/bin

  • apt install conntrack → Installs conntrack, which is required for Minikube

  • minikube start --vm-driver=none → Starts Minikube without using a VM, making it run directly on the host system

  • minikube status → Checks the status of the Minikube cluster to ensure it is running

  • curl -fsSL -o get_helm.sh <https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3> → Downloads the Helm installation script

  • chmod 700 get_helm.sh → Sets execute permissions for the Helm installation script

  • ./get_helm.sh → Executes the Helm installation script to install Helm

    Downloading [<https://get.helm.sh/helm-v3.6.3-linux-amd64.tar.gz>](<https://get.helm.sh/helm-v3.6.3-linux-amd64.tar.gz>)
    Verifying checksum... Done.
    Preparing to install helm into /usr/local/bin
    helm installed into /usr/local/bin/helm
    

  • which helm → Verifies the installation by showing the path where Helm is installed

  • helm version → Displays the client and server versions of Helm

• Helm Repository Management:

  • helm repo add stable <https://charts.helm.sh/stable> → Adds the stable Helm chart repository to your Helm configuration

    "stable" has been added to your repositories
    

  • helm repo list → Lists all Helm repositories that have been added

    NAME    URL
    stable  [<https://charts.helm.sh/stable>](<https://charts.helm.sh/stable>)
    

• Helm Chart Search:

  • helm search repo jenkins → Searches for Jenkins charts in the Helm repositories

    NAME            CHART VERSION   APP VERSION     DESCRIPTION
    stable/jenkins  2.1.0           lts             Jenkins - the leading open source automation server
    

  • helm search repo tomcat → Searches for Tomcat charts in the Helm repositories

    NAME            CHART VERSION   APP VERSION     DESCRIPTION
    stable/tomcat   0.4.0           8.5.35          An Open Source Implementation of Java Servlet, J...
    

  • helm search repo apache → Searches for Apache charts in the Helm repositories

    NAME            CHART VERSION   APP VERSION     DESCRIPTION
    stable/apache   8.5.35          2.4.37          Chart for Apache HTTP Server
    

• Viewing Helm Chart Information:

  • helm show values stable/tomcat → Displays the default values for the Tomcat chart

    replicaCount: 1
    image:
    repository: tomcat
    tag: 8.5.35
    pullPolicy: IfNotPresent
    

  • helm show chart stable/tomcat → Displays metadata about the Tomcat chart

    apiVersion: v1
    description: An Open Source Implementation of Java Servlet, JSP, and WebSocket technologies
    name: tomcat
    version: 0.4.0
    

  • helm show all stable/tomcat → Displays all information about the Tomcat chart

    Complete output including metadata, default values, and templates
    

• File and Directory Operations:

  • apt-get install tree → Installs the tree utility, which displays directory structures in a tree-like format

  • helm create helloworld → Creates a new Helm chart named “helloworld”

  • ls → Lists files and directories in the current directory

  • tree helloworld/ → Displays the directory structure of the “helloworld” chart

    helloworld/
    ├── Chart.yaml
    ├── charts
    ├── templates
    │   ├── NOTES.txt
    │   ├── _helpers.tpl
    │   ├── deployment.yaml
    │   ├── hpa.yaml
    │   ├── ingress.yaml
    │   ├── service.yaml
    │   └── tests
    │       └── test-connection.yaml
    └── values.yaml
    

  • cd helloworld → Changes directory to “helloworld”

  • ls → Lists files and directories in the “helloworld” directory

    Chart.yaml  charts  templates  values.yaml
    

  • vi values.yml → Edits the values.yml file in the “helloworld” chart

  • cd .. → Goes back to the previous directory

  • ls → Lists files and directories in the current directory

  • tree helloworld → Displays the directory structure of the “helloworld” chart after editing

  • rm -rf helloworld → Removes the “helloworld” directory and its contents

  • ls → Lists files and directories in the current directory