aws_optimizer.sh

#!/bin/bash

# Define variables
REGION="eu-west-1"
PROFILE="default"
OUTPUT_FORMAT="json"
PERIOD_IN_SECONDS=3600
STATISTIC="Maximum"
END_TIME=$(date -u "+%Y-%m-%dT%H:%M:%SZ")
START_TIME=$(date -u -v-7d "+%Y-%m-%dT%H:%M:%SZ")
ACCOUNT_ID=$(aws sts get-caller-identity --query Account --output text --profile $PROFILE)

# Color definitions
RED=$(tput setaf 1)
GREEN=$(tput setaf 2)
YELLOW=$(tput setaf 3)
CYAN=$(tput setaf 6)
RESET=$(tput sgr0)

# Helper function for visual output
function print_header {
    echo -e "${CYAN}==========================================${RESET}"
    echo -e "${CYAN}$1${RESET}"
    echo -e "${CYAN}==========================================${RESET}"
}

function print_error {
    echo -e "${RED}Error: $1${RESET}"
}

function print_success {
    echo -e "${GREEN}$1${RESET}"
}

function fetch_and_print {
    local description=$1
    local command=$2

    print_header "$description"
    result=$(eval "$command --profile $PROFILE --region $REGION --output $OUTPUT_FORMAT")
    if [ $? -eq 0 ]; then
        echo "$result" | jq
    else
        print_error "Failed to fetch $description."
    fi
    echo ""
}

# Fetch EBS Volumes
print_header "Fetching EBS Volumes"
EBS_VOLUME_ARNS=$(aws ec2 describe-volumes \
    --profile $PROFILE --region $REGION \
    --query 'Volumes[*].VolumeId' --output text | \
    awk -v region=$REGION -v account_id="$ACCOUNT_ID" '{print "arn:aws:ec2:" region ":" account_id ":volume/" $1}')

if [ -z "$EBS_VOLUME_ARNS" ]; then
    print_error "No EBS volumes found in the region $REGION."
else
    for VOLUME_ARN in $EBS_VOLUME_ARNS; do
        fetch_and_print "EBS Volume Recommendations for $VOLUME_ARN" \
            "aws compute-optimizer get-ebs-volume-recommendations --volume-arns $VOLUME_ARN"
    done
fi

# Fetch EC2 Instance Recommendations
print_header "Fetching EC2 Instance Recommendations"
INSTANCE_ARNS=$(aws compute-optimizer get-ec2-instance-recommendations \
    --profile $PROFILE --region $REGION \
    --query 'instanceRecommendations[*].instanceArn' --output text)

if [ -z "$INSTANCE_ARNS" ]; then
    print_error "No EC2 instances found for recommendations."
else
    for INSTANCE_ARN in $INSTANCE_ARNS; do
        fetch_and_print "EC2 Recommendation Projected Metrics for $INSTANCE_ARN" \
            "aws compute-optimizer get-ec2-recommendation-projected-metrics \
                --instance-arn $INSTANCE_ARN \
                --stat $STATISTIC \
                --period $PERIOD_IN_SECONDS \
                --start-time \"$START_TIME\" \
                --end-time \"$END_TIME\""
    done
fi