eMahtab’s gists

eMahtab / securely copying-war-from-s3-with-user-keys.json

Created October 15, 2017 17:24

Securely Copying-war-from-s3-with-user-keys using CloudFormation

	{
	"AWSTemplateFormatVersion" : "2010-09-09",
	"Description" : "AWS CloudFormation Sample Template VPC_with_PublicIPs_And_DNS: Sample template that creates a VPC with DNS and public IPs enabled. Note that you are billed for the AWS resources that you use when you create a stack from this template.",
	"Parameters": {
	"KeyPair": {
	"Description": "Name of the keypair to use for SSH access",
	"Type": "String"
	},
	"BucketName" : {
	"Description" : "Name of bucket containing application war",

eMahtab / copying-war-from-private-s3-with-iam.json

Created October 15, 2017 16:24

Securely copying the files from S3 with EC2 IAM role with Cloudformation

	{
	"AWSTemplateFormatVersion" : "2010-09-09",
	"Description" : "AWS CloudFormation Sample Template VPC_with_PublicIPs_And_DNS: Sample template that creates a VPC with DNS and public IPs enabled. Note that you are billed for the AWS resources that you use when you create a stack from this template.",
	"Parameters": {
	"KeyPair": {
	"Description": "Name of the keypair to use for SSH access",
	"Type": "String"
	},
	"BucketName" : {
	"Description" : "Name of bucket containing application war",

eMahtab / copying-war-from-s3.json

Created October 15, 2017 13:59

Amazon Linux Bootstrapping EC2 instance with UserData and cloud-init

	{
	"AWSTemplateFormatVersion" : "2010-09-09",
	"Description" : "AWS CloudFormation Sample Template VPC_with_PublicIPs_And_DNS: Sample template that creates a VPC with DNS and public IPs enabled. Note that you are billed for the AWS resources that you use when you create a stack from this template.",
	"Parameters": {
	"KeyPair": {
	"Description": "Name of the keypair to use for SSH access",
	"Type": "String"
	},
	"BucketName" : {
	"Description" : "Name of bucket containing application war",

eMahtab / amazon-linux-userdata.json

Created October 15, 2017 10:17

Complete Cloudformation template for Installing Apache web server on Amazon Linux with UserData

	{
	"AWSTemplateFormatVersion" : "2010-09-09",
	"Description" : "AWS CloudFormation Sample Template VPC_with_PublicIPs_And_DNS: Sample template that creates a VPC with DNS and public IPs enabled. Note that you are billed for the AWS resources that you use when you create a stack from this template.",
	"Parameters": {
	"KeyPair": {
	"Description": "Name of the keypair to use for SSH access",
	"Type": "String"
	}
	},

eMahtab / installing-tomcat-7-on-amazon-linux-ami

Last active October 6, 2022 13:23

Installing Tomcat 7 on Amazon Linux AMI through UserData



	#!/bin/bash -v
	sudo yum update -y
	sudo yum install -y tomcat7-webapps tomcat7-docs-webapp tomcat7-admin-webapps
	sudo service tomcat7 start



	# Copying a war to /usr/share/tomcat7/webapps directory

eMahtab / lambda-permission.json

Created October 14, 2017 07:20

Role for lambda execution

	Policy document for basic lambda execution. Create a role and attach this policy, then assign that role to the lambda.

	{
	"Version": "2012-10-17",
	"Statement": [
	{
	"Effect": "Allow",
	"Action": [
	"logs:CreateLogGroup",
	"logs:CreateLogStream",

eMahtab / lab1-vpc_ELB_combined.json

Created October 5, 2017 07:05 — forked from andreaswasita/lab1-vpc_ELB_combined.json

Lab_MainVPCStack

	{
	"AWSTemplateFormatVersion" : "2010-09-09",

	"Description" : "Builds a VPC w/ INET Gateway and 3 public subnets. WARNING This template creates Amazon EC2 instance(s). You will be billed for the AWS resources used if you create a stack from this template.",

	"Resources" : {

	"VPC" : {
	"Type" : "AWS::EC2::VPC",
	"Properties" : {

eMahtab / Array.forEach_is_synchronous.js

Created July 7, 2017 18:15

Yes Array.forEach is synchronous but be careful when you write async code inside forEach function body.

	var fs = require('fs');

	fs.readFile('users.json',function(err,data){
	var users = JSON.parse(data).results.slice(0,100);
	console.log("Users "+users.length);

	users.forEach(function(user,index){
	var prefix = index+1;
	fs.writeFile('users/user_'+prefix+'.json',JSON.stringify(user),function(err){
	if(err){

eMahtab / always-define-the-encoding-of-your-page.html

Created June 13, 2017 05:29

Always define the character encoding scheme for your page

	<!DOCTYPE html>
	<html>
	<meta charset="ISO-8859-1">

	<!-- It should have been
	<meta charset="UTF-8"> -->

	<!-- there is no code to represent ← in ISO-8859-1 character set
	for showing the ← character correctly we have to use UTF-8
	UTF-8 represents ← with code -->

eMahtab / Dockerfile

Last active May 3, 2017 07:13

Python-Flask-Hello-World-Dockerfile

Mahtab Alam eMahtab