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Recording Rule Example 1
================================
# Aggregating up requests per second that has a path label:
- record: instance_path:requests:rate5m
  expr: rate(requests_total{job="myjob"}[5m])

- record: path:requests:rate5m
  expr: sum without (instance)(instance_path:requests:rate5m{job="myjob"})

Recording Rule Example 2

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# Add field
echo '{"hello": "world"}' | jq --arg foo bar '. + {foo: $foo}'
# {
#   "hello": "world",
#   "foo": "bar"
# }

# Override field value
echo '{"hello": "world"}' | jq --arg foo bar '. + {hello: $foo}'
{

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An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

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Go program interaction

Example of how to use stdout and stdin from other programs in golang

Requires go

Run

go run parentprocess.go

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abc	1	2	3
def	4	5	6
ga	7	9	10
hij	1	5	99

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Patterns of Enterprise Application Architecture

By Martin Fowler (2002)

Chapter 1: Layering

A basic example of layering: FTP < TCP < IP < Ethernet

Benefis of layering:

• You can understand a layer without knowing much about the others.
• Minimize dependencies.

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/*
Call the api client like this:

	var client = new ApiClient<SEnvelope>("https://baseurl.com/api/v1");
	//you would overload and add an auth_token param here 
 	client.GetDtoAsync("envelopes", "object_id", (response) => //callback
                                                          {
                                                              this.SEnvelope = response.Data;//should be an envelope from the server
                                                          });
                                                          

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#Reference
#https://devnotcorp.wordpress.com/2012/08/21/usage-examples-of-rubys-openssl-lib/



#!/usr/bin/ruby
require 'openssl'
require 'date'
require 'time'
 

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package main

import (
	"crypto/tls"
	"crypto/x509"
	"flag"
	"io/ioutil"
	"log"
	"net/http"
)

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Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048
    
# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)
openssl ecparam -genkey -name secp384r1 -out server.key