AWs basics: S3

Local Setup

• npm install aws-sdk
• create a .aws/credentails file in the ${user_home} directory ( True for both MAC, LInux and Windows )
• Copy the below contents to the ${user_home}/.aws/credentials file:

AWSAccessKeyId=agahaha
AWSSecretKey=ahahahae

Also create .aws/config file and add the following two lines:

[default]

region = us-west-2

How to work with pre-signed URLs

Bucket name: my.test
Region: us-west-2

Content Folder: mycontent

I have tested the above by creating pre-signed URLs for upload content:
My logs:

The URL is on bucket = my.test,region = us-west-2 is = https://s3-us-west-2.amazonaws.com/my.test/content/hello-upload.txt?AWSAccessKeyId=%22nitesh%22&Content-MD5=lSlzR14%2FTZkv5IV4CGweFw%3D%3D&Expires=1460725754&Signature=bcVxdTE44JkYPFjS77yLn4D2KNw%3D
Success generating pre signed url= https://s3-us-west-2.amazonaws.com/my.test/content/hello-upload.txt?AWSAccessKeyId=%22nitesh%22&Content-MD5=lSlzR14%2FTZkv5IV4CGweFw%3D%3D&Expires=1460725754&Signature=bcVxdTE44JkYPFjS77yLn4D2KNw%3D

Public and Private Folder for Content on S3

1. Log into the AWS console
2. Browse to my.test/content/public folder
3. Right click and choose 'public'.
4. Well that makes it all public.

Set CORS at AWS

AWS basics: EC2

Note: Draft document, needs review.

Ec2 instance	Username and password to connect to AWS console: D: akon@gmail.com PW: boomboom Ec2 instance type : m4.large instance with 2 vCPU and 8GiB memory. Availability Zone: Oregon Elastic IP :  a.b.c.d Public DNS : ec2-a-b-c-d.us-west-2.compute.amazonaws.com Instance name : alpha-z Instance ID is :  i-1884a1c0) Private IP is : k.n.m.z EC2 instance image :  Amazon Linux AMI 2016.03.0 x86_64 HVM GP2 Opened port: Port # 22 (ssh) and 3000 (nodeJS)
Users	Root - root (Super user creds are unknown.Need to check in the image document) Main user : ec2-user
MongoDB	Version  - MongoDB 3.2 MongoDB is running on port 27017 MongoDB can be connected via browser using url - http://a.b.c.d:27017/ (Currently port 27017 is blocked for any incoming call from external IP. Only app server running on localhost can access it) MongoDB service starts automatically when instance is booted MongoDB instance stores its data files in /var/lib/mongo and its log files in /var/log/mongodb by default. Config file of mongoDB “mongod.config” lies on /etc. All mongo executable in /usr/bin folder. stop mongoDB service using command  - “sudo service mongod stop” start mongoDB service using command “sudo service mongod start”
Conect to Mongo	Mongo port 27017 is blocked for all external access. Change /etc/mongod.conf bind_id and inboudn/outbound of aws console security group. But one can connect to mongo shell after login to the ec2 instance. Strange: localhost, a.b.c.d and ec2-.... public DNS does not work. Only thing that works is : sudo mongo 127.0.0.1:27017/mydb -u my-admin -p admin-pwd Incase of error 'BadValue Invalid or no user locale set. Please ensure LANG and/or LC_* environment variables are set correctly' Run the command > export LC_ALL=C
Node JS installation	version v6.0.0-pre Installation directory : /home/ec2-user/node NodeJS service does not start when instance is started. Need to work on that.
Node JS Application server	Webserver location - /opt/myserver NodeJS app server port : 3000 URL to connect the server: http://a.b.c.d:3000/
Ec2 instance connection with putty (Windows)	Open Puttygen and load the private key (.pem file). This file can be downloaded from AWS. Then save the private key (.ppk file) on your disk Then open putty, and load this private (.ppk file) in  SSH->AUTH section. Then connect to instance with host as ec2-user@ipaddress Now you will be remotely access the EC2 instance.
Ec2 instance connection ssh client ( Mac or Linux )	Get the private key (.pem or ppk ) file from the admin. Contact the admin. Store it at your local machine, at a secure path, say, /path/my-private-key.pem Change permissions of the my-private-key.pem file: chmod 400 /path/my-private-key.pem command to connect: ssh -i /path/my-private-key.pem {user}@{public_dns} common user: ec2-user public dns for the ec2 instance: ec2-a-b-c-d.us-west-2.compute.amazonaws.com
Setup Git repo	Commands below : cd /opt sudo mkdir "myserver" cd /opt/myserver/ sudo git init sudo git clone https:///myrepo.git