Łukasz Szewczak lukaszewczak

Read Me

In order to access a server hosted within a vm (guest), for development purposes from the host OS, which is restricted to same origin / localhost only requests, I set up a siple nginx reverse proxy to forward my requests.

Steps

To install in a Windows VM, download and install nginx from the current, stable release; I installed to C:\nginx\
Edit the <install path>/conf/nginx.conf file with the marked changes in the file of the same name in this gist.
Start the nginx executable, located in your install path. There are service wrappers for Windows, or you can just kill the process to stop the nginx instance.

Commands for Windows

Sometimes, when working with tutorials, I just want to update all of the project depedencies, so this how I do it.

node -p "const json=require('./package.json');const depedencies=Object.keys(json.dependencies).reduce((prev,item)=>`${prev} ${item}@latest`,''); require('child_process').exec(`npm install ${depedencies}`)

Here's how to save and load docker images:

Example scenario: To save a docker image from a docker repository and save it as a tar file locally.

Save the image as a tarball

docker save repositoryname:tag > repotag.tar

Zip the image

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Keybase proof

I hereby claim:

I am lukaszewczak on github.
I am lukaszewczak (https://keybase.io/lukaszewczak) on keybase.
I have a public key ASAkuGZRO-mO_LuPODWZLBUZaaeW---1yL3FMK3rt4_0Jwo

To claim this, I am signing this object:

Free disk space when `/boot` is full (Ubuntu)

TL;DR

dpkg -l linux-image*
uname -r
sudo apt-get remove linux-image-2.6.32-{21,37,38,39,40,41,42,43,44}-server
sudo apt-get autoremove

	upstream api_node_js {
	server 127.0.0.1:4000;
	}

	server {
	listen 80;
	listen [::]:80;

	root /var/www/webapp/dist;

	Secure sessions are easy, but it's not very well documented, so I'm changing that.
	Here's a recipe for secure sessions in Node.js when NginX is used as an SSL proxy:

	The desired configuration for using NginX as an SSL proxy is to offload SSL processing
	and to put a hardened web server in front of your Node.js application, like:

	[NODE.JS APP] <- HTTP -> [NginX] <- HTTPS -> [CLIENT]

	To do this, here's what you need to do:

	const { assert } = require('chai');

	function isError(e) {
	if (typeof e === 'string') {
	return Promise.reject(new Error(e));
	}
	return Promise.resolve(e);
	}

	'use strict';

	angular.module('guiApp')
	.service('Websocket', function Websocket($q, $rootScope, PubSub) {

	var Service = {}; // Object to return for the service
	var callbacks = {}; // Keep all pending requests here until they get responses
	var currentCallbackId = 0; // Create a unique callback ID to map requests to responses
	var ws = null; // Initialize our websocket variable
	var connectStatus = false; // Is the websocket connected?