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Official Exam Links & Resources

The Exam Itself

In case you want to run ansible (or ansible-playbook) command against a set of hosts that makes sense only for one run, you can don't bother to create one-time inventory file, but simply define a comma-separated list of hosts as argument of --invertory option (or its short form that's simply -i) as follows:

ansible --inventory=myhost1,myhost2,myhost3 all -m setup -a 'filter=*name*'

(note that all in this command line stands for the target hostname)

If you have only one host to run your playbook against, your inventory string must ends with ,

Rock

ACDC - Hells Bells
Aerosmith - Dream On
Lynard Skynard - Simple Man
Bon Jovi - Wanted Dead Or Alive
Gerry Rafferty - Baker Street
Bob Seger - Turn the Page
Bob Seger - Main Street
Foreigner - Urgent

If you're not familiar: What is fail2ban? fail2ban is an awesome linux service/monitor that scans log files (e.g. auth.log for SSH) for potentially malicious behavior. Once fail2ban is tripped it will ban users for a specified duration by adding rules to Iptables. If you're unfamiliar with fail2ban Chris Fidao has a wonderful (& free!) series about security including setting up fail2ban here.

Recently Laravel released a new feature in 5.1 to throttle authentication attempts by simply adding a trait to your authentication controller. The Laravel throttle trait uses the inputted username, and IP address to throttle attempts. I love seeing this added to a framework out of the box, but what about some of our other apps not built on Laravel? Like a WordPress login? Or even an open API etc.? Ultimately,


	#user nobody;
	worker_processes 4;

	#error_log logs/error.log;
	#error_log logs/error.log notice;
	#error_log logs/error.log info;

	#pid logs/nginx.pid;

	import requests

	LOGIN_URL = "http://mydjangosite.com/accounts/login/"
	ENDPOINT_URL = 'http://mydjangosite.com/myendpoint/'

	'''
	Create a session.
	A session will automatically store the cookies that Django
	sends back to you, like the csrf token and a the session id. You
	could do it without the session, but then you'd have to save off the

	<?php

	namespace C3\Utility;

	use Monolog\Logger;

	/**
	* Class DuplicateDatabase
	*
	* @package C3\Utility

	version: "2"

	services:
	postgres:
	image: postgres:9.4
	container_name: kong-database
	ports:
	- "5432:5432"
	environment:
	- POSTGRES_USER=kong

	time-format %T
	date-format %d/%b/%Y
	log_format "%d:%t +%^" client=%h method=%m request="%r" request_length=%^ status=%s bytes_sent=%b body_bytes_sent=%^ referer=%R user_agent="%^" upstream_addr=%^ upstream_status=%^ request_time=%T upstream_response_time=%^ upstream_connect_time=%^ upstream_header_time=%^