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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>
## Download KUBECTL
We can download `kubectl` from the [Official Docs](https://kubernetes.io/docs/tasks/tools/) </br>
## 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 prod --image kindest/node:v1.23.5
# see cluster up and running
```
See cluster up and running:
```
kubectl get nodes
NAME STATUS ROLES AGE VERSION
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`
@ -54,7 +64,20 @@ export KUBECONFIG=<path>
$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
with the `kubectl get` command.
@ -82,7 +105,7 @@ kubectl get secrets
kubectl get ingress
```
## KUBECTL Create resources
## Create resources in a namespace
We can create a namespace with the `kubectl create` command:
@ -154,4 +177,12 @@ mysql ClusterIP 10.96.146.75 <none> 3306/TCP 17s
wordpress ClusterIP 10.96.157.6 <none> 80/TCP 17s
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
<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>
When learning Kubernetes, you usually have an idea of some existing system you own and manage, or a website that you are building. </br>