Carlos nidr0x

What to Expect and Tips

• 45-minute systems interview, focus on responding to real world problems with an unhealthy service, such as a web server or database. The interview will start off at a high level troubleshooting a likely scenario, dig deeper to find the cause and some possible solutions for it. The goal is to probe your knowledge of systems at scale and under load, so keep in mind the challenges of the Facebook environment.
• Focus on things such as tooling, memory management and unix process lifecycle.

Systems

More specifically, linux troubleshooting and debugging. Understanding things like memory, io, cpu, shell, memory etc. would be pretty helpful. Knowing how to actually write a unix shell would also be a good idea. What tools might you use to debug something? On another note, this interview will likely push your boundaries of what you know (and how to implement it).

Design/Architecture

Interview is all about taking an ambiguous question of how you might build a system and letting

Note

For every body who using Win10/11 with new Office that you need to know:

to active Office without crack, just follow https://github.com/WindowsAddict/IDM-Activation-Script,

you wiil only need to run

irm https://massgrave.dev/ias | iex

Ansible variable precedence

Source: http://docs.ansible.com/ansible/latest/playbooks_variables.html#variable-precedence-where-should-i-put-a-variable

From least to most important

command line values (for example, -u my_user, these are not variables)
role defaults (defined in role/defaults/main.yml)
inventory file or script group vars
inventory group_vars/all

Homebrew, run /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" from the command line to install it.
Homebrew Cask, run brew tap caskroom/cask from the command line to install it.
Alfred, buy the powerpack to get the full use of it.
Spectacle
Fish shell
VLC
Unarchiver
f.lux
n, run brew install n from the command line to install it.
Fisherman, run curl -Lo ~/.config/fish/functions/fisher.fish --create-dirs https://git.io/fisher from the command line to install it.

Kubernetes The Hard Way Notes

Reference: kelseyhightower/kubernetes-the-hard-way

Step 1: Cloud Infrastructure Provisioning - Google Cloud Platform

Reference: step 1

Verification:

	# how to fix the error:
	# warning: reattach-to-user-namespace: unsupported new OS, trying as if it were "10.10" Mojave

	# replace

	bind-key -T copy-mode-vi 'y' send -X copy-pipe "reattach-to-user-namespace pbcopy"

	# with

	bind-key -T copy-mode 'y' send -X copy-pipe-and-cancel "pbcopy"

	import os

	import testinfra.utils.ansible_runner

	testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
	os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')


	def test_bind9_installed(host):

	image: docker:latest

	variables:
	REPOSITORY_URL: <AWS ACCOUNT ID>.dkr.ecr.eu-central-1.amazonaws.com/<ECS REPOSITORY NAME>
	REGION: eu-central-1
	TASK_DEFINTION_NAME: <TASK DEFINITION NAME>
	CLUSTER_NAME: <CLUSTER NAME>
	SERVICE_NAME: <SERVICE NAME>

	services:

	NOTE I'm using Minishift 13.0.1

	$ cat ~/.bashrc
	# .bashrc

	# Source global definitions
	if [ -f /etc/bashrc ]; then
	. /etc/bashrc
	fi

	# ssh key generator data source expects the below 3 inputs, and produces 3 outputs for use:
	# "${data.external.ssh_key_generator.result.public_key}" (contents)
	# "${data.external.ssh_key_generator.result.private_key}" (contents)
	# "${data.external.ssh_key_generator.result.private_key_file}" (path)
	data "external" "ssh_key_generator" {
	program = ["bash", "${path.root}/../ssh_key_generator.sh"]

	query = {
	customer_name = "${var.customer_name}"
	customer_group = "${var.customer_group}"