ProjectsForDevops

Project-02: Automate AWS Resource Reports and Email Them Using Cron Job

Pakeeza Saeed's photo
Pakeeza Saeed
·

2 min read

Step 1: Create a Shell Script to List AWS Resources

#!/bin/bash

# Author: DevOps Team
# Date: 09-10-2024
# Version: v0.0.2
# Description: This script lists AWS resources for a given service and region and emails the report.
#
#below are the services that are supported by this scripz
# 1. EC2
# 2. RDS
# 3. S3
# 4. CloudFront
# 5. VPC
# 6. IAM
# 7. Route53
# 8. CloudWatch
# 9. CloudFormation
# 10. Lambda
# 11. SNS
# 12. SQS
# 13. DynamoDB
# 14. VPC
# 15. EBS
#
#The script will prompt the user to enter the AWS region and the service for which the resources need to be listed
#
#Usage: ./aws_resources_list.sh <aws_region> <aws_service>
#Example: ./aws_resource_list.sh us-east-1 ec2
################################################################################
#Check if the required number of arguments are passed

if [ $# -ne 3 ]; then
    echo "Usage: $0 <aws_region> <aws_service> <email>"
    echo "Example: $0 us-east-1 ec2 manager@example.com"
    exit 1
fi 

# Assign arguments to variables
aws_region=$1
aws_service=$2
manager_email=$3

# Check if AWS CLI is installed
if ! command -v aws &> /dev/null; then
    echo "AWS CLI is not installed"
    exit 1
fi

# Check if AWS CLI is configured
if [ ! -d ~/.aws ]; then
    echo "AWS CLI is not configured. Please configure the AWS CLI and try again."
    exit 1
fi

# Generate AWS resource report based on the service
case $aws_service in 
    ec2) aws ec2 describe-instances --region $aws_region ;;
    rds) aws rds describe-db-instances --region $aws_region ;;
    s3) aws s3api list-buckets --region $aws_region ;;
    cloudfront) aws cloudfront list-distributions --region $aws_region ;;
    vpc) aws ec2 describe-vpcs --region $aws_region ;;
    iam) aws iam list-users --region $aws_region ;;
    route53) aws route53 list-hosted-zones --region $aws_region ;;
    cloudwatch) aws cloudwatch describe-alarms --region $aws_region ;;
    cloudformation) aws cloudformation describe-stacks --region $aws_region ;;
    lambda) aws lambda list-functions --region $aws_region ;;
    sns) aws sns list-topics --region $aws_region ;;
    sqs) aws sqs list-queues --region $aws_region ;;
    dynamodb) aws dynamodb list-tables --region $aws_region ;;
    ebs) aws ec2 describe-volumes --region $aws_region ;;
    *) echo "Invalid service name"; exit 1 ;;
esac

Step 2: Open the cron configuration:

crontab -e

Add the following line to schedule the script to run every day at 7 AM:

0 7 * * * /path/to/aws_resources_list.sh us-east-1 ec2 > /tmp/aws_resources_list.log 2>&1 && mail -s "AWS Resource Report - EC2 Instances" manager@example.com < /tmp/aws_resources_list.log
#emailscripts