Andreas Galazis agalazis

Linux simple performance tweaks

Change the I/O Scheduler

Open $ vim /etc/default/grub then add elevator=noop next to GRUB_CMDLINE_LINUX_DEFAULT. Run $ update-grub and $ cat /sys/block/sda/queue/scheduler to be sure that noop is being used:

$ vim /etc/default/grub
$ update-grub
$ cat /sys/block/sda/queue/scheduler

[noop] deadline cfq

Configuring AWS ECS to have access to AWS EFS

If you would like to persist data from your ECS containers, i.e. hosting databases like MySQL or MongoDB with Docker, you need to ensure that you can mount the data directory of the database in the container to volume that's not going to dissappear when your container or worse yet, the EC2 instance that hosts your containers, is restarted or scaled up or down for any reason.

Don't know how to create your own AWS ECS Cluster? Go here!

New Cluster

Sadly the EC2 provisioning process doesn't allow you to configure EFS during the initial config. After your create your cluster, follow the guide below.

New Task Definition for Web App

If you're using an Alpine-based Node server like duluca/minimal-node-web-server follow this guide:

Python VS ES6 syntax comparison

Python syntax here : 2.7 - online REPL

Javascript ES6 via Babel transpilation - online REPL

Imports

import math

OUTDATED, see comments below

Install Homebrew:

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Update Homebrew formulae:

brew update

	if os.environ.get('DEBUG_SQL') or os.environ.get('DEBUG_SQL_TRACEBACK'):
	LOGGING['loggers']['django.db.backends'] = {
	'level': 'DEBUG',
	'handlers': ['console'],
	'propagate': False,
	}

	if os.environ.get('DEBUG_SQL_TRACEBACK'):
	import traceback
	import logging

	#!/bin/bash

	wget https://dl.pstmn.io/download/latest/linux64 -O postman-linux-x64.tar.gz
	sudo tar xvzf postman-linux-x64.tar.gz -C /opt
	sudo ln -s /opt/Postman/Postman /usr/bin/postman

	cat << EOF > ~/.local/share/applications/postman2.desktop
	[Desktop Entry]
	Name=Postman
	GenericName=API Client

	#!/bin/bash

	# Vadim Zaliva [email protected]
	# based on https://gist.github.com/hadess/6847281

	if [[ $EUID -ne 0 ]]; then
	echo "This script must be run as root" 1>&2
	exit 1
	fi

	#!/bin/sh

	echo "Start SSHD service"
	systemctl enable sshd
	systemctl start sshd

	echo "Remove junky programs i hate"
	dnf -y remove clipit asunder gnomebaker lxmusic gnumeric osmo pidgin xpad

	echo "Upgrade system"

	var _ = require( "lodash" );

	// Assume a collection that has:
	// - age: Number
	// - hasCat: Boolean
	var people = require( "./people.json" );

	// ----------------------------------------------------------------------------------- //
	// ----------------------------------------------------------------------------------- //

	<?php

	/**
	* stream - Handle raw input stream
	*
	* LICENSE: This source file is subject to version 3.01 of the GPL license
	* that is available through the world-wide-web at the following URI:
	* http://www.gnu.org/licenses/gpl.html. If you did not receive a copy of
	* the GPL License and are unable to obtain it through the web, please
	*