AWS CLI Cheat Sheet

Introduction to AWS CLI

The AWS Command Line Interface (CLI) is a powerful tool to interact with AWS services, enabling scripting and automation for efficient cloud management.

Purpose: Manage AWS services, automate tasks, and script operations.

Configuration and Setup

Configure AWS CLI

aws configure
Sets up AWS credentials (Access Key, Secret Key) and default region.

View Configuration

aws configure list
Lists the current AWS CLI configuration settings.

Using Profiles

aws configure --profile [profile_name]
Configure multiple profiles for different AWS accounts or roles.

Amazon S3 (Simple Storage Service)

List S3 Buckets

aws s3 ls
Lists all S3 buckets in the account.

Create S3 Bucket

aws s3 mb s3://[bucket-name]
Creates a new S3 bucket.

Copy Files to/from S3

aws s3 cp [local_path] s3://[bucket-name]/[object]
aws s3 cp s3://[bucket-name]/[object] [local_path]
Copies files to or from S3.

Sync Local Directory with S3

aws s3 sync [local_path] s3://[bucket-name]
Synchronizes contents of a local directory with an S3 bucket.

EC2 (Elastic Compute Cloud)

List EC2 Instances

aws ec2 describe-instances
Displays information about EC2 instances.

Start/Stop EC2 Instances

aws ec2 start-instances --instance-ids [instance_id]
aws ec2 stop-instances --instance-ids [instance_id]
Starts or stops specified EC2 instances.

Create EC2 Key Pair

aws ec2 create-key-pair --key-name [key_name]
Creates a new key pair for EC2 instances.

Launch EC2 Instance

aws ec2 run-instances --image-id [ami_id] --count [number] --instance-type [type] --key-name [key_name]
Launches a specified number of EC2 instances.

Terminate EC2 Instance

aws ec2 terminate-instances --instance-ids [instance_id]
Terminates specified EC2 instances.

IAM (Identity and Access Management)

List IAM Users

aws iam list-users
Lists all IAM users in the AWS account.

Create IAM User

aws iam create-user --user-name [username]
Creates a new IAM user.

Attach Policy to User

aws iam attach-user-policy --policy-arn [policy_arn] --user-name [username]
Attaches a managed policy to an IAM user.

Create IAM Role

aws iam create-role --role-name [role_name] --assume-role-policy-document [policy_json]
Creates a new IAM role with specified trust relationships.

Networking with VPC

Describe VPCs

aws ec2 describe-vpcs
Lists all VPCs in the account.

Create VPC

aws ec2 create-vpc --cidr-block [cidr_block]
Creates a new VPC with the specified CIDR block.

Create Subnet

aws ec2 create-subnet --vpc-id [vpc_id] --cidr-block [cidr_block]
Creates a subnet in a specified VPC.

Create Internet Gateway

aws ec2 create-internet-gateway
Creates an internet gateway for VPC.

Attach Internet Gateway to VPC

aws ec2 attach-internet-gateway --internet-gateway-id [igw_id] --vpc-id [vpc_id]
Attaches an internet gateway to a VPC.

AWS Lambda

List Lambda Functions

aws lambda list-functions
Lists AWS Lambda functions in the account.

Create Lambda Function

aws lambda create-function --function-name [name] --runtime [runtime] --role [role_arn] --handler [handler] --zip-file fileb://[file_path]
Creates a new Lambda function.

Invoke Lambda Function

aws lambda invoke --function-name [name] --payload [payload] [output_file]
Invokes a Lambda function with specified payload.

Update Lambda Function Code

aws lambda update-function-code --function-name [name] --zip-file fileb://[file_path]
Updates the code of an existing Lambda function.

AWS RDS (Relational Database Service)

List RDS Instances

aws rds describe-db-instances
Lists all RDS instances in the account.

Create RDS Instance

aws rds create-db-instance --db-instance-identifier [id] --allocated-storage [size] --db-instance-class [class] --engine [engine] --master-username [username] --master-user-password [password]
Creates a new RDS database instance.

Delete RDS Instance

aws rds delete-db-instance --db-instance-identifier [id] --skip-final-snapshot
Deletes an RDS database instance.

Tips for Using AWS CLI

Scripting and Automation: Integrate AWS CLI commands into scripts for automation of AWS services.
Output Formatting: Use the --output option to format the CLI output as json, text, or table.
Version Update: Regularly update AWS CLI to the latest version for new features and improvements.
Help and Documentation: Use aws [service] [command] help for detailed information and examples.

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