Kubernetes

Contents:

• Kubernetes - Create a Simple Resource
• Kubernetes - Create KiND Cluster

Kubernetes In Docker (KInD)

Todo

FIXME: enable mermaid

graph LR
  image([image]) --> |used by|container
  subgraph pod
    direction TB
    container
  end

Todo

FIXME: enable mermaid

graph LR

  subgraph deployment
    direction TB

    subgraph pod
      container
    end

  end

We can easily create a cluster using Kubernetes - Create KiND Cluster.

To create simple (trivial) resources you can use kubectl directly. For a complete example look at Kubernetes - Create a Simple Resource.

Alternative — Install minikube

• Follow the instructions in minikube start

• Download minikube.exe

  New-Item -Path 'c:\' -Name 'minikube' -ItemType Directory -Force
  Invoke-WebRequest -OutFile 'c:\minikube\minikube.exe' -Uri 'https://github.com/kubernetes/minikube/releases/latest/download/minikube-windows-amd64.exe' -UseBasicParsing
  

• Add the executable to your path

  $oldPath = [Environment]::GetEnvironmentVariable('Path', [EnvironmentVariableTarget]::User)
  if ($oldPath.Split(';') -inotcontains 'C:\minikube'){ `
    [Environment]::SetEnvironmentVariable('Path', $('C:\minikube;{0}' -f $oldPath), [EnvironmentVariableTarget]::User) `
  }
  

• Reload your path. The easiest way is to stop and start your terminal again.

  If you use VS Code do not use Developer: Reload Window. You will need to close and open the full application.

  

  The same applies to other tools like JetBrains products if you use them.

  Get-Command minikube
  

  Output:

  CommandType     Name                                               Version    Source
  -----------     ----                                               -------    ------
  Application     minikube.exe                                       0.0.0.0    C:\minikube\minikube.exe
  

Kubernetes CPU limits

How to start a Pod

kubectl run nginx --image=nginx

How to delete a Pod

kubectl delete pod nginx

How to get a Pod

kubectl get pod nginx