javierav

IPTables

Estructura

Table > Chain > Rule

La primera regla que coincida es la que se aplica.

Cadenas

javierav

class ApplicationController < ActionController::Base
  private
  
  attr_reader :execution
  
  def execute(action, params={})
    @execution = action.new(params.reverse_merge(default_execute_params).call
  end
  
  def default_execute_params

javierav

class ActionBase
  def self.call(*params)
    new(*params).call
  end
  
  def self.on(event, *methods)
    methods.each { |m| __on_listeners[event.to_sym] << m.to_sym }
  end

  def self.__on_listeners

javierav

Docker Swarm

Install

$ sudo apt-get update
$ sudo apt-get install ca-certificates curl gnupg lsb-release
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
$ echo \
 "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \

javierav

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket"
            ],
            "Resource": [
                "arn:aws:s3:::bucket-name"

javierav

#!/usr/bin/env bash

docker run \
  -d \
  --name "redis" \
  --restart unless-stopped \
  -p 6379:6379 \
  --mount 'type=volume,source=redis_storage,target=/data,volume-driver=local' \
  redis

javierav

Arduino Meteo

Programar el ESP8266 con Arduino

1. Abrimos Arduino > Preferences
2. Añadimos "http://arduino.esp8266.com/stable/package_esp8266com_index.json" al cuadro de texto

Referencias

• https://www.luisllamas.es/esp8266-nodemcu/

javierav

#!/usr/bin/env bash

docker run \
  -d \
  --name "mysql" \
  --restart unless-stopped \
  -p 3306:3306 \
  --mount 'type=volume,source=mysql_storage,target=/var/lib/mysql,volume-driver=local' \
  -e MYSQL_ALLOW_EMPTY_PASSWORD=yes \
  mysql:5.7

javierav

#!/usr/bin/env bash

docker run \
  -d \
  --name "postgresql" \
  --restart unless-stopped \
  -p 5432:5432 \
  --mount 'type=volume,source=postgresql_storage,target=/var/lib/postgresql/data,volume-driver=local' \
  -e POSTGRES_USER=postgres \
  -e POSTGRES_DB=postgres \

javierav

$ bundle config build.pg --with-opt-dir="/usr/local/opt/libpq"
$ gem install mysql2 -- --with-mysql-dir=/opt/homebrew/opt/mysql-client