goh.jiaying gohjiaying

Severless, lambda, Api Gateway

When testing on api gateway received a "module initialization error" but do not know what's the error.

Check api-gateway error logs
Test that the lambda works from console (This helped me to solve my problem)

About CORS:

CORS stands for Cross-origin resource sharing. It is a set of standard HTTP headers used to restrict the access of web resources from other domains. In the web app security model, this is called same-origin policy, and it's supposed to avoid cross-site scripting (XSS) attacks. Browsers will not fetch the requested resources unless the corresponding server attaches the required HTTP headers in the OPTIONS call (or GET method).

Useful Commands

Docker

Code	Description
`docker rm $(docker ps -a -q -f status=exited)`	To remove all the containers that have exited
`EC2_REGION=wget -q -O - http://169.254.169.254/latest/meta-data/placement/availability-zone\|sed s/.$//` `aws ecr get-login --region $EC2_REGION --no-include-email`	To login into ECR
`docker pull amazon/amazon-ecs-sample`	Just a ecs sample

Docker CLI Download

Download Docker Cloud
Open application and sign in
Go CLI docker ps

Visual Studio Code

For AWS Client , it is region specific. If different region is required, have 2 client.
Download AWS Toolkit

	#!/bin/bash
	#####################################################
	# Name: Bash CheatSheet for Mac OSX
	#
	# A little overlook of the Bash basics
	#
	# Usage:
	#
	# Original Author: J. Le Coupanec
	# Date: 2014/11/04