Alain L hartfordfive

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

Description

Method of populating data into TimescaleDB where Prometheus doesn't directly scrape the metrics.
This can be used in cases where a user needs to backfill metrics which are only generated every few hours or at the end of every day.

Method #1: Run the inserts directly on the Postgres database

Create the cpu_total metric table, or in other words, create the actual "cpu_total" series

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

	package main

	/*
	// Example
	sci := ServerConnInfo{
	"127.0.0.1",
	"22",
	"ubuntu",
	`key.pem`,
	}

	package Village

	type Acceptor struct {
	Name string
	preferences map[*Proposer]int
	Free bool
	partner *Proposer
	proposalPool []*Proposer
	}

	function filereport() {

	if [ "$1" != "run" ]; then
	echo "Notice Dry-run mode"
	MODE="dryrun"
	else
	MODE="run"
	fi

	package main

	import (
	"errors"
	"fmt"
	"time"
	)

	type HostError struct {
	message string

	import json, argparse, sys, os, time
	from os.path import basename


	def getFileContents(filename):
	with open(filename, 'r') as f:
	return f.read()

	def writeToFile(filename, contents):
	file = open(filename, "w")

	package main

	// Run at https://play.golang.org/p/QDc3-94kqJ

	import (
	"fmt"
	"reflect"
	)

	type Event interface {