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kubectl wip

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41
kubernetes/kubectl/README.md
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@ -5,20 +5,30 @@ You can use `minikube` or any Kubernetes cluster. </br>
Kind is an amazing tool for running test clusters locally as it runs in a container which makes it lightweight and easy to run throw-away clusters for testing purposes. </br> Kind is an amazing tool for running test clusters locally as it runs in a container which makes it lightweight and easy to run throw-away clusters for testing purposes. </br>
## Download KUBECTL
We can download `kubectl` from the [Official Docs](https://kubernetes.io/docs/tasks/tools/) </br>
## Create a kubernetes cluster ## Create a kubernetes cluster
In this guide we will run two clusters side by side so we can demonstrate cluster access. </br>
Create two clusters:
``` ```
# create two clusters
kind create cluster --name dev --image kindest/node:v1.23.5 kind create cluster --name dev --image kindest/node:v1.23.5
kind create cluster --name prod --image kindest/node:v1.23.5 kind create cluster --name prod --image kindest/node:v1.23.5
# see cluster up and running ```
See cluster up and running:
```
kubectl get nodes kubectl get nodes
NAME STATUS ROLES AGE VERSION NAME STATUS ROLES AGE VERSION
prod-control-plane Ready control-plane,master 2m12s v1.23.5 prod-control-plane Ready control-plane,master 2m12s v1.23.5
``` ```
# Understanding the KUBECONFIG ## Understanding the KUBECONFIG
Default location of the `kubeconfig` file is in `<users-directory>/.kube/config` Default location of the `kubeconfig` file is in `<users-directory>/.kube/config`
@ -54,7 +64,20 @@ export KUBECONFIG=<path>
$ENV:KUBECONFIG="C:\Users\aimve\.kube\config" $ENV:KUBECONFIG="C:\Users\aimve\.kube\config"
``` ```
# Working with Kubernetes resources We can export seperate configs using `kind` </br>
This is possible with cloud based clusters as well:
```
kind --name dev export kubeconfig --kubeconfig C:\Users\aimve\.kube\dev-config
kind --name prod export kubeconfig --kubeconfig C:\Users\aimve\.kube\prod-config
#switch to prod
$ENV:KUBECONFIG="C:\Users\aimve\.kube\prod-config"
kubectl get nodes
```
## Working with Kubernetes resources
Now that we have cluster access, next we can read resources from the cluster Now that we have cluster access, next we can read resources from the cluster
with the `kubectl get` command. with the `kubectl get` command.
@ -82,7 +105,7 @@ kubectl get secrets
kubectl get ingress kubectl get ingress
``` ```
## KUBECTL Create resources ## Create resources in a namespace
We can create a namespace with the `kubectl create` command: We can create a namespace with the `kubectl create` command:
@ -155,3 +178,11 @@ wordpress ClusterIP 10.96.157.6 <none> 80/TCP 17s
kubectl -n wordpress-site port-forward svc/wordpress 80 kubectl -n wordpress-site port-forward svc/wordpress 80
``` ```
## Clean up
```
kind delete cluster --name dev
kind delete cluster --name prod
```

2
kubernetes/tutorials/basics/README.md
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@ -1,5 +1,7 @@
# Kubernetes Tutorial: The Basics # Kubernetes Tutorial: The Basics
<a href="https://youtu.be/JeAHlTYB1Qk" title="How to learn Kubernetes in 2022"><img src="https://i.ytimg.com/vi/JeAHlTYB1Qk/hqdefault.jpg" width="40%" alt="How to learn Kubernetes in 2022" /></a>
This guide is aimed to fast-track your Kubernetes learning by focusing on a practical hands-on overview guide. </br> This guide is aimed to fast-track your Kubernetes learning by focusing on a practical hands-on overview guide. </br>
When learning Kubernetes, you usually have an idea of some existing system you own and manage, or a website that you are building. </br> When learning Kubernetes, you usually have an idea of some existing system you own and manage, or a website that you are building. </br>