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Generation of a Self Signed Certificate

Generation of a self-signed SSL certificate involves a simple 3-step procedure:

STEP 1: Create the server private key

openssl genrsa -out cert.key 2048

STEP 2: Create the certificate signing request (CSR)

openssl req -new -key cert.key -out cert.csr

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Activate Windows 8, 8.1, 10 and 11 Pro for Free

A guide how to get and activate Windows 8, 8.1, 10 and 11 Pro for free!

NOTE

If you see the Windows keyboard button in this guide; and you can't find it on your keyboard, you likely have/had Windows 10 which has the button . If you can't find that one, you likely have a PC that has been upgraded to Windows 8/8.1/10/11 from Windows 8.1/8/7/Vista/XP and other ones. If you have one of those, refer the Windows key button to as yours. A list of them is below:

Windows key buttons

- Windows 11

- Windows 10

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while doing installationgatting same err on windows server 2019
https://community.microfocus.com/cyberres/fortify/f/fortify-discussions/524702/docker-install-on-windows-server-2019

blog url to install docker using power shell on windows server 2019
https://learn.microsoft.com/en-us/virtualization/windowscontainers/quick-start/set-up-environment?tabs=dockerce#windows-server-1

command run as admin on windows server 2019
Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/Windows-Containers/Main/helpful_tools/Install-DockerCE/install-docker-ce.ps1" -o install-docker-ce.ps1
.\install-docker-ce.ps1

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For GCP Associate Cloud Engineer:
A Cloud Guru:
https://acloud.guru/learn/gcp-certified-associate-cloud-engineer 

Linux Academy:
https://linuxacademy.com/cp/modules/view/id/238



For AWS Cloud Practioner: 

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https://www.shellcheck.net/
https://www.emmecilab.net/blog/installiamo-e-configuriamo-helm-per-kubernetes/
https://ace.c9.io/


https://scanlibs.com/hands-github-actions-implement-applications/

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Setup a Local Only SMTP Email Server (Linux, Unix, Mac)

1 - Point localhost.com to your machine

Most of programs will not accept an email using just @localhost as domain. So, edit /etc/hosts file to make the domain localhost.com point to your machine, including this content to the file:

127.0.0.1 localhost.com

2 - Install Postfix

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Kubernetes Production Cluster Cheatsheet

Bootstraping clusters with kubeadm

Precheck

https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/#before-you-begin

• One or more machines running one of:
  • Ubuntu 16.04+

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Install a 3-Node Kubernetes Cluster on Centos 7

This setup uses 3 machines:

1. Centos7
2. 100GB HDD
3. 32 GB RAM
4. 8 CPU

All Machines

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Google dork cheatsheet

Search filters

Filter	Description	Example
allintext	Searches for occurrences of all the keywords given.	allintext:"keyword"
intext	Searches for the occurrences of keywords all at once or one at a time.	intext:"keyword"
inurl	Searches for a URL matching one of the keywords.	inurl:"keyword"
allinurl	Searches for a URL matching all the keywords in the query.	allinurl:"keyword"
intitle	Searches for occurrences of keywords in title all or one.	intitle:"keyword"

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#!groovy
import groovy.json.JsonOutput
import groovy.json.JsonSlurper

def label = "mypod-${UUID.randomUUID().toString()}"
podTemplate(label: label, yaml: """
spec:
      containers:
      - name: mvn
        image: maven:3.3.9-jdk-8