Walter Gomez ictus4u

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/

Nginx TLS SNI routing, based on subdomain pattern

Nginx can be configured to route to a backend, based on the server's domain name, which is included in the SSL/TLS handshake (Server Name Indication, SNI).
This works for http upstream servers, but also for other protocols, that can be secured with TLS.

prerequisites

at least nginx 1.15.9 to use variables in ssl_certificate and ssl_certificate_key.
check nginx -V for the following:
```
...
TLS SNI support enabled
```

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, at the Agile Conference in Toronto, Andrew Shafer posted an offer to moderate an ad hoc "Birds of a Feather" meeting to discuss the topic of "Agile Infrastructure". Only one person showed up to discuss the topic: Patrick Debois. Their discussions and sharing of ideas with others advanced the concept of "agile systems administration". In that same year, Debois and Shafer formed an Agile Systems Administrator group on Google, with limited success. Patrick Debois did a presentation called "Infrastructure and Operations" addressing issues around involving more of the comp

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

	#!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

	Step by step how to pull a private DockerHub hosted image in a Kubernetes YML.

	export DOCKER_REGISTRY_SERVER=https://index.docker.io/v1/
	export DOCKER_USER=Type your dockerhub username, same as when you `docker login`
	export DOCKER_EMAIL=Type your dockerhub email, same as when you `docker login`
	export DOCKER_PASSWORD=Type your dockerhub pw, same as when you `docker login`

	kubectl create secret docker-registry myregistrykey \
	--docker-server=$DOCKER_REGISTRY_SERVER \
	--docker-username=$DOCKER_USER \

	pipeline {
	agent any

	parameters {
	string(defaultValue: '', description: 'The name of the organization working on this repository.', name: 'orgName')
	}

	stages{
	stage("Create Repo Piplines") {
	steps {

	#!/usr/bin/env bash
	set -euo pipefail
	readonly SELF="$(readlink -f "$0")"

	## Run as root
	[ $UID == 0 ] \|\| exec sudo -E "$SELF" "$@"

	die() { echo "[ERROR] $*" >&2 ; exit 1 ; }
	cmd() { echo "[#] $*" >&2; "$@" ; }

	[root@centos1 ~]# ldapsearch -h localhost -D "cn=Manager,dc=openiam,dc=org" -w foobar -s sub "(&(objectClass=posixGroup)(cn=hdfs))"
	# extended LDIF
	#
	# LDAPv3
	# base <dc=openiam,dc=org> (default) with scope subtree
	# filter: (&(objectClass=posixGroup)(cn=hdfs))
	# requesting: ALL
	#

	# hdfs, Group, openiam.org

	#!/bin/sh
	## Fonction pour générer un password.
	## "randpw" pour générer un mot de passe aléatoire de 32 caractères
	## "randpw <n>" pour générer un mot de passe aléatoire de <n> caractères
	randpw(){ < /dev/urandom tr -dc _A-Z-a-z-0-9 \| head -c${1:-32};echo;}
	## Définir les mots de passe et les exporter pour qu'ils soient visibles des scripts.
	cat > passwords << EOF
	DATA_CONFIG_PASSWORD=`randpw`
	DATA_ADMIN_PASSWORD=`randpw`
	DATA_SERVICE_PASSWORD=`randpw`