mechcozmo

List of IAM Permissions

This is a list of controls that can be placed into an IAM policy document. All content comes from AWS documentation.

Something wrong? Try looking here.

Table of Contents generated with DocToc

• List of IAM Permissions
  • IAM Policy Variables

tmornini

#!/bin/bash -x

exec > /tmp/user-data.log 2>&1

mkdir -p /var/spool/rsyslog

(
  mkdir -p /etc/rsyslog.d/keys/ca.d
  cd /etc/rsyslog.d/keys/ca.d
  curl -O https://logdog.loggly.com/media/logs-01.loggly.com_sha12.crt

lkraider

#!/usr/bin/env python

"""Convert CSV policies into AWS JSON format."""

import json
import csv

POLICIES = 'terraform.csv'
CRUD_COL = 2
ACTION_COL = 3

dineshsprabu

var async = require('async');

async.waterfall(
    [
        function(callback) {
            callback(null, 'Yes', 'it');
        },
        function(arg1, arg2, callback) {
            var caption = arg1 +' and '+ arg2;
            callback(null, caption);

quiver

Sometimes you want to retrieve EC2 insntances' region information.

You can query that information through instance metadata(169.254.169.254).

$ curl --silent http://169.254.169.254/latest/dynamic/instance-identity/document
{
  "privateIp" : "172.31.2.15",
  "instanceId" : "i-12341ee8",
  "billingProducts" : null,
 "instanceType" : "t2.small",

yoavniran

The Ultimate Unit Testing Cheat-sheet

---

• Sinon Chai
• Chai
• Sinon

techgaun

### KERNEL TUNING ###

# Increase size of file handles and inode cache
fs.file-max = 2097152

# Do less swapping
vm.swappiness = 10
vm.dirty_ratio = 60
vm.dirty_background_ratio = 2

tomas-stefano

Capybara Actions

# Anchor
click_link 'Save'

# Button
click_button 'awesome'

# Both above

MattSurabian

{
    "Statement": [
        {
            "Sid": "PackerSecurityGroupAccess",
            "Action": [
                "ec2:CreateSecurityGroup",
                "ec2:DeleteSecurityGroup",
                "ec2:DescribeSecurityGroups",
                "ec2:AuthorizeSecurityGroupIngress",
                "ec2:RevokeSecurityGroupIngress"

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD