Batuhan Apaydın developer-guy

How to view the content of *.yaml.gz file stored in Kubernetes secret?

$ kubectl -n <NAMESPACE> get secret <SECRET> -o json | jq -r '.data."prometheus.yaml.gz"' | base64 -d | gunzip

Oh my zsh.

Install ZSH.

sudo apt install zsh-autosuggestions zsh-syntax-highlighting zsh

Install Oh my ZSH.

setup
```
$ kind create cluster
```

install zot with minimal image for security-minded dist-spec-only

$ helm upgrade zot zot/zot --set image.repository=ghcr.io/project-zot/zot-minimal-linux-amd64

Folks, Leave me a comment / URL if something you like is missing!

Beginner Resources

Resource	Description
Kube Academy	https://kube.academy/
kuernetes-101	https://kube.academy/courses/kubernetes-101/
Docs Home	https://kubernetes.io/docs/home/
CKS CKA CKAD Simulator	https://killer.sh/

Brew Bundle Brewfile Tips

Copyright & License

Unless otherwise noted (either in this file or in a file's copyright section) the contents of this gist are Copyright ©️2020 by Christopher Allen, and are shared under spdx:Creative Commons Attribution Share Alike 4.0 International (CC-BY-SA-4.) open-source license.

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`jr`, `jp`, `jb` (alias to `opa eval`): Cheatsheet

jr, jp and jb are commands for JSON modification.

Basic usages

$ data='{"name":"chris", "friends":["alice", "bob"]}'
# jr
$ echo $data | jr 'i.name'

Kubernetes v1.16 API deprecation testing

Examples of how to test the impact of the v1.16 API deprecations and ways to debug early!

If this is the first time you're hearing of these deprecations STOP and read this blog post (thanks @vllry!).

Common misunderstandings

The exact apiVersion: value that I use in my manifest is stored on disk (etcd).

	curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg \| sudo apt-key add -
	echo "step1"
	echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" \| sudo tee /etc/apt/sources.list.d/kubernetes.list
	echo "kubeadm install"
	sudo apt update -y
	sudo apt -y install vim git curl wget kubelet=1.24.3-00 kubeadm=1.24.3-00 kubectl=1.24.3-00
	echo "memory swapoff"
	sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
	sudo swapoff -a
	sudo modprobe overlay

	package main

	import (
	"crypto/x509"
	"encoding/pem"
	"errors"
	"fmt"
	"golang.org/x/crypto/ssh"
	"io/ioutil"
	"net"

	// Example showing how to patch Kubernetes resources.
	package main

	import (
	"fmt"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/client-go/dynamic"
	_ "k8s.io/client-go/plugin/pkg/client/auth"