developer-guy

Oh my zsh.

Install ZSH.

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

Install Oh my ZSH.

developer-guy

1. setup

   $ kind create cluster

2. 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

developer-guy

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

developer-guy

package main

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

developer-guy

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/

developer-guy

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.

Sponsor

If you more tips and advice like these, you can become a monthly patron on my GitHub Sponsor Page for as little as $5 a month; and your contributions will be multipled, as GitHub is matching the first $5,000! This gist is all about Homebrew, so if you like it you can support it by donating to them or becoming one of their Github Sponsors.

developer-guy

// 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"

developer-guy

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'

developer-guy

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

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

developer-guy

// Sign returns a signature made by combining the message and the signers private key
// With the r.Verify function, the signature can be checked.
func (r *RsaIdentity) Sign(msg []byte) (signature []byte, err error) {
	hs := r.getHashSum(msg)
	signature, err := rsa.SignPKCS1v15(rand.Reader, r.private, crypto.SHA256, hs)
	return
}