swen-ihealthlabs

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

How to share a folder with a docker container on OSX

Mounting shared folders between OSX and the docker container is tricky due to the intermediate boot2docker VM. You can't use the usual docker -v option as the docker server knows nothing about the OSX filesystem - it can only mount folders from the boot2docker filesystem. Fortunately, you can work around this using SSHFS.

A quick overview of the node.js streams interface with basic examples.

This is based on @brycebaril's presentation, Node.js Streams2 Demystified

Overview

Streams are a first-class construct in Node.js for handling data.

Think of them as as lazy evaluation applied to data.

	syntax on
	set ruler " Show the line and column numbers of the cursor.
	set formatoptions+=o " Continue comment marker in new lines.
	set textwidth=0 " Hard-wrap long lines as you type them.
	set modeline " Enable modeline.
	set esckeys " Cursor keys in insert mode.
	set linespace=0 " Set line-spacing to minimum.
	set nojoinspaces " Prevents inserting two spaces after punctuation on a join (J)
	" More natural splits
	set splitbelow " Horizontal split below current.

	/*
	* Handling Errors using async/await
	* Has to be used inside an async function
	*/
	try {
	const response = await axios.get('https://your.site/api/v1/bla/ble/bli');
	// Success 🎉
	console.log(response);
	} catch (error) {
	// Error 😨

	'use strict';
	const { LOGGLY_TOKEN } = require('../config');

	/**
	* [Winston](https://github.com/winstonjs/winston)
	* A multi-tranport async logging library
	*
	* Use winston to implement our logger, but the rest of the app uses
	* the generic logger interface that we export. This decouples logging
	* logic in our code from implementation with Winston.


	### start server
	```sh
	sudo mongod --reset --replSet replsetname --dbpath dbfilepath --port serverport --keyFile authkeyfile --auth
	```

	### show config
	```javascript
	rs.conf()
	```

	storage:
	dbPath: "/data/db"
	journal:
	enabled: true
	systemLog:
	destination: file
	path: "/var/log/mongodb.log"
	logAppend: true
	timeStampFormat: iso8601-utc
	processManagement:

	curl --header 'Authorization: token INSERTACCESSTOKENHERE' \
	--header 'Accept: application/vnd.github.v3.raw' \
	--remote-name \
	--location https://api.github.com/repos/owner/repo/contents/path

	# Example...

	TOKEN="INSERTACCESSTOKENHERE"
	OWNER="BBC-News"
	REPO="responsive-news"

	# See list of docker virtual machines on the local box
	$ docker-machine ls
	NAME ACTIVE URL STATE URL SWARM DOCKER ERRORS
	default * virtualbox Running tcp://192.168.99.100:2376 v1.9.1

	# Note the host URL 192.168.99.100 - it will be used later!

	# Build an image from current folder under given image name
	$ docker build -t gleb/demo-app .