Setup Billing Alerts for AWS Services using CloudWatch

Today we will learn on how to setup billing alerts for AWS Services

AWS Cloud Watch service is used to create billing alarms for all the AWS services. Using Cloud watch, we can monitor the service usage charge per month (e.g.: EC2 estimated charges) and send alert notifications to the specified persons.

Setup Git on AWS EC2 Linux and clone the repo on Local Windows Machine

Scenario:

• Setup and Launch an EC2 linux Instance
• Install Git on EC2 linux
• Create multiple users on EC2 linux to access the machine and use Git
• Create an empty Git Repo on EC2 linux
• Give users access to Git
• Clone Git on a local windows machine

Steps:                              

Create a new EC2 Linux instance

• Amazon Linux 2 AMI
• General purpose t2.micro
• Setup inbound security rule to allow your machine SSH into the EC2
• SSH port 22 : <your machine's public ip>
• You can also click "my ip" in the drop down

Log in to your linux EC2 with default user (ec2-user) through putty

• In putty, load the pem file and convert it into ppk file
• In putty > Auth > load the ppk file

Enter the command: Sudo yum install git -y

Enter "Git --version" to verify if the Git has been successfully installed on EC2 or not

Next step is to create users in EC2 Linux for login and for committing code to Git:

·       Open Puttygen and click generate

o    Select Type of key to generate = RSA

o    Number of bytes = 2048

·       Once the loading is finished

o    Click “Save public key”

o    Click “Save private key”

§  Give a name to your private key (e.g.: test2pvt.ppk)

·       Log in to your linux EC2 with default user (ec2-user) through putty

o    In Auth, pass the ppk file of the default user

·       Create a new user

o    Sudo adduser new_user1

·       Switch to the new user

o    Sudo su – new_user1

·       Create a .ssh directory

o    Mkdir .ssh

·       Assign the appropriate permissions

o    Chmod 700 .shh

·       Create authorized_keys file

o    Touch .ssh/authorized_keys

·       Assign the appropriate perissions

o    Chmod 600 .ssh/authorized_keys

·       Open the ppk file you created for the new user and copy the algorithm and key

·       Enter the key that you generate for the new user in the above file

o    Vi .ssh/authorized_keys

Note: make your key in one line and enter the algorithm name in front of the key and the key file name at the end (for e.g.: test2pvt was the name of the file you created for this user)

·       Login to your new user using putty

Now we will create an empty Git Repo and configure user access:

·       On you EC2 Linux, type the below commands:

o    Mkdir testGitRepo.git

o    Cd testGitRepo.git

o    Git init –bare      (this will initialize an empty repo)

·       Now go to your local windows machine

·       Create a folder for git on your local windows machine

·       open a command prompt

·       Navigate to that folder (cd </path/to/the/git/folder/on/your/local/machine)

·       Generate a rsa key for your local machine

o    Type: ssh-keygen –t rsa –b 2048

·       It will create public and private key and store the keys in your local machine

o    Path: users/username/.git/id_rsa.pub

·       Open the id_rsa file in your notepad

o    Copy the key

o    Note: make sure you copy the whole line and everything is in one line

·       Go back to your EC2 linux machine

·       Open the file “authorized_keys” using vi editor

o    Type: vi .ssh/authorized_keys

·       If you see an existing key, paste this new key on a new line after that existing key. Otherwise, simply paste the new key.

·       Save and exit the vi editor

·       Go back to your local machine and enter below commands

o    Git init

o    Git add .

o    Git commit –m “initial git commit”

o    Git remote add origin ec2-user@<your-full-ec2-public-ip>:/home/ec2-user/testGitRepo.git

o    Git config --global remote.origin.receivepack “git receive-pack” 

·       Try to do a git pull (clone the repo from ec2)

·       Enjoy